Sac City is a city in and the county seat of Sac County, Iowa, United States, located just southwest of the eastern intersection of U.S. Routes 20 and 71 in the rolling hills along the valley of the North Raccoon River. The city is one of 45 designated Main Street Iowa communities through the Main Street Iowa development program. The population was 2,220 in the 2010 census, a decline from the 2,368 population in 2000.
Sac City was first platted in 1855 by Joshua Keith Powell of Fort Dodge, Iowa. The town was so named because the Sac and Fox Indians were in possession of the land at the time of the Louisiana Purchase. The City of Sac City was incorporated 19 years later, in 1874.
Judge Eugene Criss, credited with being the father of Sac City, left Wisconsin and crossed the Mississippi River in the early months of 1855 by covered wagon. He was in search of waterpower and had the desire to establish a settlement in a new and untried country. Deciding upon the North Raccoon River to begin his settlement, Judge Criss proceeded to erect the first log cabin in Sac City, establish himself in the hotel business, as well as keep a stage station and general store for nearby settlers.
As early as 1859, there was talk of building a railroad through Sac County, but the first railroad did not come through Sac City until 1879. The railroad companies refused to lay tracks through undeveloped or mildly developed areas, and Sac City did not meet the requirements.