Story County, Iowa

Story County, Iowa
Story County Administration Building
Location within the U.S. state of Iowa
Coordinates: 42°02′16″N 93°27′59″W / 42.037777777778°N 93.466388888889°W / 42.037777777778; -93.466388888889
Country United States
State Iowa
Founded1846
Named afterJoseph Story
SeatNevada
Largest cityAmes
Area
 • Total
574 sq mi (1,490 km2)
 • Land573 sq mi (1,480 km2)
 • Water0.8 sq mi (2.1 km2)  0.1%
Population
 (2020)
 • Total
98,537
 • Estimate 
(2024)
102,498
 • Density172/sq mi (66.4/km2)
Time zoneUTC−6 (Central)
 • Summer (DST)UTC−5 (CDT)
Congressional district4th
Websitewww.storycountyiowa.gov
  • Iowa county number 85

Story County is a county in the U.S. state of Iowa. As of the 2020 census, the population was 98,537, making it the ninth-most populous county in Iowa. The county seat is Nevada and the largest city is Ames. The geographical center of Iowa lies in Story County, 5 miles (8.0 km) northeast of Ames. Story County comprises the Ames, IA Metropolitan Statistical Area, which is included in the Des Moines-Ames-West Des Moines, IA Combined Statistical Area. The county is home to Iowa State University in Ames.