List of defunct minor baseball leagues in the United States

This list is incomplete; you can help by adding missing items. (March 2015)

This is a sortable list of defunct minor baseball leagues in the United States. Minor league affiliated Canada and Mexico leagues are also listed, as are leagues with team members in Canada, Cuba and Mexico.

List

League State(s) Designation(s) Years
Alabama–Florida League Alabama, Florida Class D 1936–1939, 1951–1962
Alabama–Mississippi League Alabama, Mississippi Class D 1936
Alabama State League Alabama Class D 1940–1941, 1956–1950
Alabama–Tennessee League Alabama, Tennessee Class D 1921
All-American Association Alabama, Louisiana, Tennessee, Texas Independent 2001
American Association Colorado, Indiana, Iowa, Kansas, Kentucky, Louisiana, Minnesota, Missouri, Nebraska, New York, Ohio, Oklahoma, Texas, West Virginia, Wisconsin Class A (1903–1911)
Class AA (1912–1945)
Class AAA (1946–1962, 1969–1997)		 1902–1962, 1969–1997
Anthracite League Pennsylvania Class D 1928
Appalachian League Tennessee, North Carolina, Virginia, West Virginia Class D (1911–1914, 1921–1925, 1937–1955, 1957–1962)
Rookie (1963–2020)		 1911–1914, 1921–1925, 1937–1955, 1957–2020.
Arizona Instructional League Arizona Winter Rookie 1960–1991
Arizona League Arizona Independent 1897
Arizona–Mexico League Arizona, Mexico Class C 1955–1958
Arizona–Mexico League II Arizona, Mexico Independent 2003
Arizona Rookie League Arizona Winter Rookie 1964
Arizona State League Arizona Class D 1928–1930
Arizona–Texas League Arizona, Texas Class D (1931–1932, 1937–1939)
Class C (1940–1941, 1947–1950, 1952–1954)		 1931–1932, 1937–1941, 1947–1950, 1952–1954
Arkansas–Louisiana–Texas League Arkansas, Louisiana, Texas Negro minor 1951
Arkansas–Missouri League Arkansas, Missouri Class D 1936–1940
Arkansas State League Arkansas, Louisiana, Missouri, Texas Class D 1893, 1897, 1908–1909, 1934–1935
Arkansas–Texas League Arkansas, Texas Class D 1906
Atlantic Association Connecticut, Delaware, Massachusetts, Maine, Maryland, New Jersey, Pennsylvania, Rhode Island, Washington, D.C. Independent (1889–1890)
Class D (1908)		 1889–1890, 1908
Atlantic Coast League North Carolina, South Carolina Independent 1995
Atlantic League I Connecticut, Delaware, New Jersey, New York, Pennsylvania, Virginia Class A (1896, 1899)
Class B (1897–1898)		 1895–1900, 1905, 1907-1909
Atlantic League II Connecticut, New Jersey, New York Class D 1914–1915
Basin League Nebraska, South Dakota Independent 1953–1959
Beaver Valley League Pennsylvania Independent 1894
Bi-State League I Illinois, Wisconsin Class D 1915
Bi-State League II North Carolina, Virginia Class D 1934–1942
Big South League Arkansas, Mississippi, Tennessee Independent 1996–1997
Big State League Texas Class B 1947–1957
Black Hills League Nebraska, South Dakota Independent 1891–1892
Blue Grass League Kentucky Class D 1892, 1896, 1908–1912, 1922–1924
Blue Mountain League Pennsylvania Independent 1907
Blue Ridge League I Maryland, Pennsylvania, West Virginia Class D 1915–1918, 1920–1930
Blue Ridge League II North Carolina, Virginia Class D 1946–1950
Border League I Michigan, Ontario Class D 1912–1913
Border League II New York, Ontario, Quebec Class C 1946–1951
Buckeye League Ohio Class D 1915
California Fall League California Winter Rookie 1998
California League I California Class B (1892)
Class D (1898)
Class E (1899)		 1879–1893, 1896–1897, 1900–1902, 1906–1909
California Players League California Independent 1894
California State League California Class D 1883, 1885–1886, 1888, 1903–1906, 1910, 1912–1915, 1928–1929
California Winter League I California Winter League 1928–1947
Can–Am League New Jersey, New York, Quebec, Ontario Independent 2005–2019
Canadian Association Canada Independent 1895
Canadian Baseball League Canada Independent 2003
Canadian League Ontario, Pennsylvania Independent
Class D (1899)		 1885–1886, 1893–1894, 1896–1898
Canadian Midland League Canada Independent 1894
Canadian–American League I Massachusetts, New York, Ontario Class C 1936–1942, 1946–1951
Canadian–American League II Ontario Independent 1959
Canal Zone League Panama Winter Rookie 1948–1950
Cape Breton Colliery League Nova Scotia Class D (1937–1938)
Class C (1939)		 1937–1939
Carolina Association North Carolina, South Carolina Class D 1908–1912
Carolina Baseball League North Carolina Independent 1936–1938
Carolina Interstate League North Carolina, South Carolina Independent 1904
Carolina Textile League North Carolina Independent 1935
Central Association I Illinois, Iowa, Missouri, Wisconsin Class D 1908–1917
Central Association II Illinois, Iowa, Missouri Class C 1947–1949
Central Atlantic League Independent 1888
Central Baseball League Louisiana, Missouri, Texas Independent 2002–2005
Central California League California Class D 1896, 1910–1911
Central Connecticut League Connecticut Independent 1892, 1910–1911
Central International League Manitoba, Minnesota, North Dakota, Wisconsin Class C 1912
Central Interstate League Illinois, Indiana, Iowa Independent 1887–1890
Central Kansas League Kansas Class D 1908–1912
Central League I New Jersey, New York, Pennsylvania Independent 1888
Central League II Illinois, Indiana, Kentucky, Pennsylvania Class C 1897
Central League III Illinois, Indiana, Michigan, Ohio, Pennsylvania, West Virginia Class B 1900, 1903–1917, 1920–1922, 1926, 1928–1930, 1932, 1934
Central League IV Indiana, Michigan, Ohio, West Virginia Class A 1948–1951
Central Mexican League Mexico Class C 1955–1957
Central Nebraska League Nebraska Independent 1903
Central New Jersey League New Jersey Independent 1891–1892
Central New York League New York Independent 1888, 1910
Central Pennsylvania League Pennsylvania Independent (1886–1888, 1896, 1898)
Class F (1897)		 1886–1888, 1896–1898
Central Texas League Texas Class D 1914–1917
Chicago City League Illinois Independent 1887, 1890, 1892–1894, 1909–1910
Citrus League Florida Spring 1972
Coastal Plain League North Carolina Class D 1937–1941, 1946–1952
Cocoa Rookie League Florida Rookie 1964
Colonial League I Connecticut, Massachusetts, Rhode Island Class C 1914–1915
Colonial League II Connecticut, New Jersey, New York Class B 1947–1950
Colorado State League Colorado Independent 1885, 1889–1891, 1894–1896, 1898
Connecticut Association Connecticut Class D 1910
Connecticut League/Connecticut State League Connecticut Class E (1891)
Class B (1894, 1905–1912)
Class F (1897–1901)		 1884–1885, 1888, 1891, 1894–1895, 1897–1912
Continental Baseball League Louisiana, New Mexico, Texas Independent 2007–2010
Copper Country Soo League Michigan Class D 1904–1905
Cotton States League I Alabama, Arkansas, Florida, Louisiana, Mississippi Class D 1902–1914
Cotton States League II Arkansas, Louisiana, Mississippi, Texas Class D 1919–1932
Cotton States League III Arkansas, Louisiana, Mississippi, Texas Class C 1936–1941, 1947–1955
Cumberland Valley League Maryland, Pennsylvania Independent 1896
Dakota League North Dakota, South Dakota Class D 1921–1922
Dawson League Yukon Independent 1904
Delaware State League Delaware Independent 1889
Delta League Mississippi Class D 1904–1905
Dixie Association Alabama, Arkansas, Florida, Georgia, Louisiana, New Mexico, North Carolina, Tennessee, Texas Class AA 1971
Dixie League I Alabama, Georgia Class D 1916–1917
Dixie League II Arkansas, Louisiana, Mississippi, Texas Class C 1933
East Dixie League Arkansas , Louisiana, Mississippi Class C 1934–1935
East Texas League Texas Class D (1916, 1923–1926, 1931)
Class C (1936–1940, 1946, 1949–1950)		 1916, 1923–1926, 1931, 1936–1940, 1946, 1949–1950
East Texas Negro League Louisiana, Texas Negro minor 1946
Eastern Association Connecticut, Massachusetts, New York, Pennsylvania, Rhode Island Independent (1882, 1901, 1909)
Class B (1913–1914)		 1882, 1901, 1909, 1913–1914
Eastern Canada League Ontario, Quebec Class B 1922–1923
Eastern Carolina Baseball Association North Carolina Independent 1920–1922
Eastern Carolina League North Carolina Class D 1908–1910, 1928–1929
Eastern Championship Association New York, Pennsylvania, Washington D.C. Independent 1881
Eastern Illinois League Illinois, Indiana Class D 1907–1908
Eastern Interstate League Illinois, Pennsylvania Independent 1888, 1890, 1895
Eastern Iowa League Illinois, Iowa Independent 1905
Eastern Kansas League Kansas Class D 1910–1911
Eastern League I Delaware, Maryland, New Jersey, Pennsylvania, Virginia Independent 1884–1887
Eastern League II Connecticut, Maine, Massachusetts, New York, Pennsylvania, Rhode Island, Virginia Class B (1916–1916)
Class A (1919, 1932)		 1916–1919, 1932
Eastern New England League Maine, Massachusetts Independent 1885
Eastern Shore League Delaware, Maryland, Virginia Class D 1922–1928, 1937–1941, 1946–1949
Empire State League Georgia, New York Independent (1887)
Class D (1913)		 1887, 1913
Empire State League (1987) New York Independent 1987
Empire State League (1905–1907) New York Independent 1905–1907 1905–1907
Evangeline Baseball League Louisiana, Mississippi, Texas Class D (1934–1942, 1946–1948)
Class C (1949–1957)		 1934-1942, 1946–1957
Far West League California, Oregon, Nevada Class D 1948–1951
Federal League Illinois, Indiana, Kentucky, Missouri, Ohio, Pennsylvania Independent 1913
Florida–Alabama–Georgia League Alabama, Florida, Georgia Class D 1915
Florida East Coast Instructional League Florida Winter Rookie 1964
Florida East Coast League Florida Class D (1946–1948)
Rookie (1949–1954)		 1946–1954
Florida Instructional League Florida Winter Rookie 1958–2007
Florida Instructional League North Florida Winter Rookie 1969
Florida Instructional League South Florida Winter Rookie 1969
Florida International League Cuba, Florida Class C (1946–1948)
Class B (1949–1954)		 1946–1954
Florida Winter League Florida Winter 1960–1961
Geauga County League Ohio Independent 1905
Georgia State League Georgia Class D 1906, 1914, 1920–1921, 1948–1956
Georgia–Alabama League Alabama, Georgia, New York Class D 1913–1917, 1928–1930, 1946–1951
Georgia–Florida League Florida, Georgia, Class D (1935–1942, 1946–1958, 1962)
Class A (1963)		 1935–1942, 1946–1958, 1962–1963
Great Central League Illinois, Indiana, Iowa, Minnesota Independent 1994
Gulf League Alabama, Louisiana Independent 1886
Gulf States League Louisiana, Texas Class A 1976
Hawaii Winter Baseball Hawaii Winter Independent 1993–2008
Hudson River League Massachusetts, New York Class D (1903)
Class C (1904–1907)		 1903–1907
Illinois–Indiana League Illinois, Indiana Independent 1889, 1892
Illinois–Indiana–Iowa League (Three-I) Illinois, Indiana, Iowa, Minnesota, Wisconsin Class D (1901)
Class B (1902–1917, 1919–1932, 1935, 1937–1942, 1946–1961)		 1901–1917, 1919–1932, 1935, 1937–1942, 1946–1961
Illinois–Iowa League Indiana, Illinois, Iowa Independent 1890–1892
Illinois State League Illinois Class D 1947–1948
Illinois–Missouri League Illinois, Missouri Class D 1908–1914
Independent Negro League Georgia, Louisiana, Maryland, Missouri, Tennessee, New Jersey, New York, Ohio, Pennsylvania, Texas, Washington D.C. Independent 1914–1950
Independent Northern League New York, Ontario Independent 1906
Indiana–Michigan League Indiana, Michigan Class D 1921
Indiana-Ohio League Indiana, Ohio Class D 1908
Indiana State League Indiana Independent 1889, 1890, 1900
Inland Empire League Oregon, Washington Class D 1902, 1908
Inter-American League Florida, Dominican Republic, Panama, Puerto Rico, Venezuela Class AAA 1979
International Association for Professional Base Ball Players Ohio, Ontario, New Hampshire, New York, Massachusetts, Michigan, New Jersey Independent 1877–1880, 1888–1900
International League of Independent Professional Base Ball Clubs Cuba, Delaware, New Jersey, Pennsylvania Independent 1906
Interstate Association Indiana, Michigan, Ohio Class C 1906
Interstate League Indiana, Kentucky, Michigan, Ohio, Pennsylvania, New Jersey, New York, West Virginia Independent (1896–1901)
Class C (1913)
Class D (1905–1908, 1914–1916, 1932)		 1896–1901, 1905–1908, 1913–1916, 1932
Iowa State League Illinois, Iowa Class D 1904–1907, 1912
Iowa–South Dakota League Iowa, South Dakota Class D 1902–1903
Iron & Oil Association Ohio, Pennsylvania Independent 1884
Iron & Oil League New York, Ohio, Pennsylvania, West Virginia Independent (1885, 1892)
Class F (1898)
Class C (1895)		 1885, 1892, 1895, 1898
Kansas State League Kansas, Oklahoma Independent (1887, 1895–1898)
Class D (1905–1906, 1909–1911, 1913–1914)		 1887, 1895–1898, 1905–1906, 1909–1911, 1913–1914
Kansas–Oklahoma–Missouri League (KOM) Kansas, Missouri, Oklahoma Class D 1946–1952
Kentucky–Indiana League Indiana, Kentucky Independent 1896
Kentucky–Illinois–Tennessee League (KITTY) Illinois, Indiana, Kentucky, Tennessee Class D 1903–1906, 1910–1914, 1916, 1922–1924, 1933–1942, 1946–1955
Keystone Association Pennsylvania Independent 1884–1885
League Alliance Eastern United States Semi-affiliated 1877, 1882
Lone Star League Texas Class D (1927–1929)
Class C (1947–1949)
Class A (1977)		 1927–1929, 1947–1949, 1977
Longhorn League Texas Class C 1947–1955
Louisiana State Baseball League Louisiana Independent (1915)
Class D (1920)		 1915, 1920
Maine State League Maine, New Hampshire Independent (1887)
Class D (1907–1908)		 1887, 1907–1908
Manitoba-Dakota League (MANDAK) Manitoba, North Dakota Independent 1950–1957
Maryland Fall Baseball Maryland Fall 1998
Massachusetts-Connecticut League Connecticut, Massachusetts Class D 1912
Michigan State League Michigan Independent (1889–1890, 1895)
Class D (1902, 1911–1914)
Class C (1926, 1940–1941)		 1889–1890, 1895, 1902, 1911–1914, 1926, 1940–1941
Michigan–Ontario League Michigan, Ontario Class B 1919–1926
Middle Atlantic League Maryland, Ohio, New York, Pennsylvania, West Virginia Class C 1925–1942, 1946–1951
Middle States League Connecticut, Delaware, New Jersey, Pennsylvania Independent 1889
Middle Texas League Texas Class D 1914–1915
Midwest League Illinois, Indiana, Iowa, Kentucky, Michigan, Ohio, Wisconsin Class D (1956–1962)
Class A (1963–2020)		 1956–2020
Minnesota–Wisconsin League Minnesota, Wisconsin Class C (1911)
Class D (1909–1910, 1912)		 1909–1912
Mississippi State League Mississippi Class D 1924
Mississippi Valley League Illinois, Iowa Class D (1922–1932)
Class B (1933)		 1922–1933
Mississippi–Ohio Valley League Illinois, Indiana, Iowa, Kentucky, Missouri Class D 1949–1955
Missouri-Iowa-Nebraska-Kansas League (MINK) Iowa, Kansas, Missouri, Nebraska Class D 1910–1913
Missouri State League Missouri Independent (1896)
Class D (1911)		 1896, 1911
Missouri Valley League Arkansas, Kansas, Missouri, Oklahoma Independent (1901)
Class D (1902–1903)
Class C (1904–1905)		 1901–1905
Monongahela League Pennsylvania Independent 1894
Montana State League Idaho, Montana, Utah Independent 1892, 1900, 1909
Mountain State League Kentucky, West Virginia Class D (1936–1941)
Class C (1942)		 1936–1942
Mountain States League I Kentucky, Ohio, West Virginia Class D 1911–1912
Mountain States League II Kentucky, Tennessee, Virginia Class D (1948–1952)
Class C (1953–1954)		 1948–1954
Naugatuck Valley League Connecticut Independent 1896
National Association Massachusetts, New Hampshire, New York, Pennsylvania, Washington D.C. Independent 1879–1880
National Association of Colored Baseball Clubs of the United States and Cuba Cuba, New York, Pennsylvania Negro minor 1907–1910
National Colored Base Ball League Kentucky, Maryland, Massachusetts, New York, Ohio, Pennsylvania, Washington D.C. Negro minor 1887
Nebraska State League Iowa, Kansas, Nebraska, South Dakota Class B (1892)
Class D (1910–1915, 1922–1923, 1928–1938, 1956–1959)		 1892, 1910–1915, 1922–1923, 1928–1938, 1956–1959
Negro American Association Georgia, Maryland, North Carolina, Pennsylvania, South Carolina, Virginia Negro minor 1939, 1948–1949
Negro National Baseball Association North Carolina, Virginia Negro minor 1954
Negro Southeastern League Alabama, Georgia Negro minor 1921
Negro Southern League I Alabama, Arkansas, Florida, Georgia, Kentucky, Louisiana, Ohio, Tennessee Negro minor 1920–1931, 1933–1936
Negro Southern League II Alabama, Arkansas, Florida, Georgia, Indiana, North Carolina, Tennessee Negro minor 1945–1951
Negro Texas League Alabama, Arkansas, Louisiana, Texas Negro minor 1949
Nevada State League Nevada Independent 1907
New Brunswick-Maine League Maine, New Brunswick Class D 1913
New California League California Independent 1881
New England Association Massachusetts, New Hampshire, Rhode Island Independent 1877, 1895
New England League Connecticut, Massachusetts, Maine, New Hampshire, Rhode Island Independent (1877, 1886–1888, 1891, 1893, 1894–1898, 1901)
Class F (1899)
Class B (1892, 1902–1915, 1919, 1926–1930, 1933, 1946–1949)		 1877, 1886–1888, 1891–1899, 1901–1915, 1919, 1926–1930, 1933, 1946–1949
New Hampshire State League New Hampshire, New York, Vermont Independent (1885–1886, 1895)
Class D (1907)		 1885–1886, 1895, 1907
New Jersey State League New Jersey Class D 1897
New Pacific League British Columbia, Oregon, Washington Class C 1896
New York–New Jersey League Connecticut, New Jersey, New York Class D 1913
New York–Pennsylvania League New York, Pennsylvania Class D (1923–1932)
Class A (1933–1937)		 1923–1937
New York–Penn League Connecticut, Maryland, Massachusetts, New York, Ohio, Ontario, Pennsylvania, Vermont, West Virginia Class A 1939–2020
New York State League New York, Pennsylvania Independent (1885, 1889–1890, 1898)
Class B (1894–1895, 1902–1917)
Class D (1897, 1899–1901 )		 1885, 1894–1895, 1897–1917
North Atlantic League Massachusetts, New Hampshire, New Jersey, New York, Ontario, Pennsylvania Class D (1946–1950)
Independent (1995–1996)		 1946–1950, 1995–1996
North Carolina State League North Carolina Class D 1913–1917, 1937–1953
North Dakota League North Dakota Class D 1923
North Texas League Arkansas, Texas Class D 1905, 1907
Northeast Arkansas League Arkansas Class D 1909–1911, 1936–1941
Northeast League Maine, Massachusetts, New Jersey, Pennsylvania, Rhode Island Independent 1995–1998, 2003–2004
Northeastern League Connecticut, Massachusetts, New Hampshire, New York, Vermont Independent (1887, 1895–1896)
Class B (1934)		 1887, 1895–1896, 1934
Northern-Copper Country League Manitoba, Michigan, Minnesota, North Dakota Class C (1906)
Class D (1907)		 1906–1907
Northern Copper Country-Soo League Manitoba, Michigan, Minnesota, North Dakota Class D 1905
Northern League Manitoba, Michigan, Minnesota, North Dakota, Ontario, South Dakota, Wisconsin Class D (1902–1905, 1908, 1917, 1933–1940)
Class C 1941–1942, 1946–1962)
Class A (1963–1971)		 1902–1905, 1908, 1913–1917, 1932–1942, 1932–1942, 1946–1971
Northern Maine League Maine Class D 1909
Northern Michigan League Michigan Independent 1887, 1895
Northern New York League New York, Vermont Class D (1902)
Independent (1900–1901, 1903–1905)		 1900–1905
Northern State of Indiana League Indiana Class D 1909–1911
Northern Utah League Idaho, Utah Class D 1921
Northwest International League British Columbia, Washington Class B 1919
Northwestern League I Illinois, Indiana, Iowa, Michigan, Minnesota, Ohio, Wisconsin Independent 1883–1884, 1886–1887
Northwestern League II British Columbia, Montana, Oregon, Washington Class B 1905–1917
Oahu League Hawaii, Independent 1913
Ohio State League Indiana, Kentucky, Michigan, Ohio, West Virginia Independent (1887)
Class D (1908–1916, 1936–1947)		 1887, 1908–1916, 1936–1947
Ohio–Indiana League Indiana, Ohio Class D 1948–1951
Ohio–Pennsylvania League Ohio, Pennsylvania, West Virginia Class C (1905–1911)
Class D (1912)		 1905–1912
Ohio Valley League Ohio, Independent 1890, 1912, 1949
Oklahoma State League Oklahoma Class D 1912, 1922–1924
Oklahoma–Arkansas–Kansas League Arkansas, Kansas, Oklahoma Class D 1907
Oklahoma–Kansas League Kansas, Oklahoma Class D 1908
Ontario–Quebec–Vermont League Ontario, Quebec, Vermont Class B 1924
Oregon State League Oregon, Washington (state) Class D 1904
Pacific Coast International League British Columbia, Washington Class B 1918–1922
Pacific Interstate League Oregon, Washington Independent 1891
Pacific League California Independent 1878-1880
Pacific National League California, Idaho, Montana, Oregon, Utah, Washington Class A (1903)
Class B (1904)
Independent (1905)		 1903–1905
Pacific Northwest League British Columbia, Montana, Oregon, Utah, Washington Independent (1890–1892, 1896, 1898, 1901)
Class B (1902)		 1890–1892, 1896, 1898, 1901–1902
Palmetto League Georgia, South Carolina Class D 1931
Pan American Association Unknown Independent 1960
Panhandle-Pecos Valley League New Mexico, Texas Class D 1923
Peninsula Winter League California Rookie 1959–1968
Pennsylvania League Pennsylvania Independent 1903–1904
Pennsylvania–Ohio–Maryland League (POW) Maryland, Ohio, Pennsylvania, West Virginia Class D 1908–1914
Pennsylvania–Ontario–New York League (PONY) Ontario, Pennsylvania, New York Class D 1939–1956
Pennsylvania-New Jersey League New Jersey, Pennsylvania Independent 1908
Pennsylvania State Association Pennsylvania Class D 1934–1942
Pennsylvania State League Pennsylvania Independent 1892–1895
Pennsylvania–West Virginia League Pennsylvania, West Virginia Class D 1906–1907
Pennyrile League Kentucky Independent 1896
Piedmont League Maryland, North Carolina, Pennsylvania, South Carolina, Virginia Class D (1920)
Class C (1921–1931)
Class B (1932–1955)		 1921–1955
Potomac League Maryland, West Virginia Class D 1916
Prairie League Manitoba, Minnesota, North Dakota, Saskatchewan, South Dakota, Wisconsin Independent 1995–1997
Provincial League (baseball) Quebec, Vermont Independent (1900, 1948–1949)
Class C (1950–1955)		 1900, 1948–1955
Rio Grande Association Arizona, New Mexico, Texas Class D 1915
Rio Grande Valley League Texas Class D (1931, 1949)
Class C (1950)		 1931, 1949–1950
Rocky Mountain League Colorado, New Mexico, Wyoming Class D 1912
San Francisco City League California Independent 1896
San Joaquin Valley League California Class D (1910)
Independent (1911)		 1910–1911
Sarasota Rookie League Florida Rookie 1964
Sooner State League Oklahoma, Texas Class D 1947–1957
Sophomore League New Mexico, Texas Class D 1958–1961
South Carolina League South Carolina Class D 1906–1908
South Central League Arkansas, Oklahoma Class D 1906, 1912
South Coast League Georgia, Florida, South Carolina Independent 2007
South Dakota League Minnesota, North Dakota, South Dakota Class D 1920–1923
South New Jersey League New Jersey Independent (1895, 1897)
Class D (1896)		 1895–1897
South Texas League Texas Class C 1903–1906
Southeastern League Alabama, Florida, Georgia, Louisiana, North Carolina, Tennessee Class D (1910–1912)
Class B (1926–1950)
Independent (2002–2003)		 1910–1912, 1926–1950, 2002–2003
Southern Association Alabama, Arkansas, Florida, Georgia, Indiana, Louisiana, South Carolina, Tennessee Class B (1886, 1892–1896, 1898, 1901)
Class C (1899)
Class A (1902–1945)
Class AA (1946–1961)		 1886, 1892–1896, 1898–1899, 1901–1961
Southern California League California Class D 1913
Southern California Trolley League California Class D 1910
Southern California Winter League California Winter 1914, 1957
Southern Illinois League Illinois Independent (1895–1896)
Class D (1910)		 1895–1896, 1910
Southern League of Colored Base Ballists Alabama, Florida, Georgia, Louisiana, South Carolina, Tennessee Negro minor 1886
Southern Michigan League Michigan Class D (1906–1910)
Class C (1911–1912)		 1906–1912
Southern New Hampshire League New Hampshire Class D 1907
Southern Tier League New York, Pennsylvania Independent 1904–1905
Southern Tri-State League Alabama, Tennessee Independent 1905
Southwest International League Arizona, California, Mexico, Nevada, Texas Class C 1948–1951
Southwest Iowa League Iowa Class D 1903
Southwest Texas League Texas Class D (1910–1911)
Independent (1936)		 1910–1911, 1936
Southwest Washington League Washington Class D 1903–1906
Southwestern League Arkansas, Kansas, Missouri, Oklahoma Independent (1887, 1904)
Class D (1921, 1924–1926)
Class C (1922–1923)		 1887, 1904, 1921–1926
Southwestern Nebraska Baseball League Nebraska Independent 1903
Sunset League Arizona, California, Mexico, Nevada Class C 1947–1950
Tar Heel League North Carolina Class D 1939–1940, 1953–1954
Tennessee–Alabama League Alabama, Tennessee Independent 1903–1904
Texas Association Texas Class C (1896)
Class D 1923–1926)		 1896, 1923–1926
Texas Colored League Louisiana, Oklahoma, Texas Negro minor 1919–1921, 1923–1926
Texas–Louisiana Negro League Louisiana, Texas Negro minor 1930–1931
Texas–Oklahoma–Louisiana League Louisiana, Oklahoma, Texas Negro minor 1929
Texas–Oklahoma League Oklahoma, Texas Class D 1911–1914, 1921–1922
Texas-Southern League Louisiana, Texas Class B (1895)
Class C (1896–1899)		 1895–1899
Texas Valley League Texas Independent (1901–1908)
Class D ( 1927–1928, 1938)		 1901–1908, 1927–1928, 1938
Tidewater League North Carolina, Virginia Class D 1911
Tobacco State League North Carolina Class D 1946–1950
Tri State League Alabama, Florida, Louisiana, Mississippi Negro minor 1935
Tri-State League Arkansas, Delaware, Illinois, Indiana, Iowa, Kentucky, Mississippi, Nebraska, New Jersey, North Carolina, Ohio, Pennsylvania, South Carolina, South Dakota, Tennessee, West Virginia, Wisconsin Independent (1887–1890, 1895, 1904–1906, 1938–1939)
Class B (1907–1914, 1946–1955)
Class D (1924–1926)		 1887–1890, 1895, 1904–1914, 1924–1926, 1938–1939, 1946–1955
Twin Ports League Minnesota, Wisconsin Class E 1943
Twin States League New Hampshire, Vermont Class D 1911
Union Association Idaho, Montana, Utah Class D 1911–1914
Union Professional League Delaware, Maryland, New Jersey, New York, Pennsylvania, Washington D.C. Independent 1908
United States Baseball League Illinois, New York, Ohio, Pennsylvania, Virginia, Washington D.C. Independent 1900, 1912–1913
United States League Illinois, Massachusetts, Michigan, Missouri, New Jersey, New York, Ohio, Pennsylvania Negro minor 1945–1946
Upper Peninsula League Michigan, Wisconsin Independent 1888, 1890–1891, 1895
Utah–Idaho League Idaho, Utah Class C 1926–1928
Utah State League Utah Independent 1902
Vermont State League New York, Vermont Independent 1907
Virginia League North Carolina, Virginia Class C (1906–1919)
Class B (1920–1928)		 1906–1928
Virginia League I Virginia Independent (1894)
Class B (1895–1896)		 1894–1896
Virginia League II Virginia Class D 1900
Virginia League III Virginia Class D 1939–1942
Virginia League IV North Carolina, Virginia Class D 1948–1951
Virginia Mountain League Virginia Independent (1912
Class D (1914)		 1912, 1914
Virginia-North Carolina League North Carolina, Virginia Class C (1901)
Class D (1905)		 1901, 1905
Virginia Valley League Kentucky, Oregon, West Virginia Class D 1910
Washington State League Washington Class D 1910–1912
West Coast Negro Baseball Association California, Oregon, Washington Negro minor 1946
West Dixie League Louisiana, Texas Class C 1934–1935
West Michigan League Michigan Class D 1915
West Texas League Texas Class D 1920–1922, 1928–1929
West Texas–New Mexico League New Mexico, Texas Class D (1937–1942)
Class C (1946–1954)
Class B (1955)		 1937–1942, 1946–1955
West Virginia League West Virginia Class D 1910
Western Arkansas League Arkansas Class D (1924) 1924
Western Association Arkansas, Colorado, Illinois, Indiana, Iowa, Kansas, Kentucky, Ohio, Oklahoma, Michigan, Minnesota, Missouri, Nebraska, Texas, West Virginia Independent (1888–1891, 1893, 1894–1899)
Class D (1911, 1914–1917, 1920–1921)
Class C (1905–1910, 1922–1932, 1934–1954)		 1888–1891, 1893, 1894–1899, 1901, 1905–1911, 1914–1917, 1920–1932, 1934–1954
Western Baseball League Arizona, California, Oregon, Nevada, Utah Independent 1994–2002
Western Canada League Alberta, Manitoba, Saskatchewan Class D (1907, 1910–1914)
Class C (1919)
Class B (1920–1921)
Independent (1951–1961)		 1907, 1910–1914, 1919–1921, 1951–1961
Western Carolina League North Carolina Class D 1948–1952, 1960–1962
Western Carolinas League North Carolina, South Carolina Class D (1948–1952; 1960–1962)
Class A (1963–1979)		 1948–1952, 1960–1979
Western International League Idaho, Oregon, Washington, Alberta, British Columbia Class B (1922, 1937–1942; 1946–1951)
Class A (1952–1954)		 1922, 1937–1942, 1946–1954
Western Interstate League Indiana, Illinois, Pennsylvania Independent (1883)
Class B (1885)		 1883, 1895
Western League I Colorado, Indiana, Iowa, Kansas, Minnesota, Nebraska, Michigan, Ohio, New York, Wisconsin Independent 1885–1888, 1892–1899
Western League II Colorado, Iowa, Illinois, Kansas, Minnesota, Missouri, Nebraska, New Mexico, Oklahoma, Texas, Wisconsin Class A 1900–1937, 1947–1958
Western League III Colorado, Iowa, Minnesota, Nebraska, South Dakota, Wyoming Class D 1939–1941
Western New York League New York Independent 1890
Western Ontario Baseball Association Ontario Class D 1905
Western Pennsylvania League Maryland, Pennsylvania, West Virginia Class D 1907
Western Tri-State League Idaho, Oregon, Washington (state) Class D 1912–1914
Wisconsin–Illinois League Illinois, Wisconsin Class D 1908–1914, 1926-1927, 1932
Wisconsin–Michigan League Michigan, Wisconsin Independent 1892
Wisconsin State League Illinois, Wisconsin Class D 1905–1907, 1922-1925, 1928-1931, 1940-1942, 1946-1953
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