Fremont County

Also known as Fremont County, Iowa, Fremont County, IA

county in Iowa, United States

Key facts

Country: United States
State: Iowa
Named after: John C. Fremont
Seat: Sidney
Largest city: Sidney
Total: 517 sq mi (1,340 km )
Land: 511 sq mi (1,320 km )
Water: 5.5 sq mi (14 km ) 1.1%
Estimate 2025: 6,522
Density: 12.9/sq mi (4.99/km )
Time zone: UTC−6 ( Central )
Summer dst: UTC−5 ( CDT )
Congressional district: 3rd

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Article

Fremont County is a county located in the U.S. state of Iowa. As of the 2020 census the population was 6,605, making it the state's seventh-least populous county. The county seat and the largest city is Sidney. The county was formed in 1847 and named for the military officer John C. Frémont.

Geography