The Iowa State League was a minor league baseball league that played from 1904 to 1907 and again in 1912. The Class D level league had franchises based in Illinois and Iowa. The Ottumwa Snappers franchise won league championships in 1904 and 1905. In 1908, the Iowa State League evolved to become the Central Association.
The Iowa State League began play in 1904 as an eight-team Class D level minor league in and around Iowa, United States. The league played four seasons and ceased operations following the 1907 season. Seven of the eight 1907 Iowa State League teams formed the Central Association in 1908. The Iowa State League had the formal name as the Iowa League of Professional Baseball Clubs.
The Iowa State League reformed in 1912 as an Independent league. Estherville defeated Fort Dodge in the league playoffs to claim the championship. The league permanently folded after the season.
1904 Iowa State League<br/> schedule
1905 Iowa State League<br/> schedule
1906 Iowa State League<br /> schedule Boone moved to Clinton July 14.
1907 Iowa State League<br /> schedule
1912 Iowa State League<br /> schedule Clear Lake folded July 14 <br /> Playoffs: Estherville 4 games, Fort Dodge 1.