File:Jefferson_County,_Iowa_Courthouse.jpg · Wikimedia Commons · See Wikimedia Commons
Jefferson County
Sign in to saveAlso known as Jefferson County, Iowa, Jefferson County, IA
county in Iowa, United States
Key facts
- Country
- United States
- State
- Iowa
- Founded
- January 21, 1839
- Named after
- Thomas Jefferson
- Seat
- Fairfield
- Largest city
- Fairfield
- Total
- 437 sq mi (1,130 km )
- Land
- 436 sq mi (1,130 km )
- Water
- 1.4 sq mi (3.6 km ) 0.3%
- Estimate 2025
- 15,291
- Density
- 35.9/sq mi (13.9/km )
- Time zone
- UTC−6 ( Central )
- Summer dst
- UTC−5 ( CDT )
- Congressional district
- 1st
- Website
- https://jeffersoncounty.iowa.gov/
via Wikipedia infobox
Wikidata facts
- Named after
- Thomas Jefferson
- Country
- United States
- Located in
- Iowa
- Contains
- Fairfield
- Capital
- Fairfield
- Population
- 15663
- Area
- 1131
- Shares border with
- Keokuk County
- Official website
- jeffersoncounty.iowa.gov
- Image
- Jefferson County, Iowa Courthouse.jpg
- Households
- 6855
Show 7 more facts
- water as percent of area
- 0.3
- native label
- Jefferson County
- Commons category
- Jefferson County, Iowa
- topic's main category
- Category:Jefferson County, Iowa
- inception
- 1839-00-00
- per capita income
- 28849
- topic has template
- Template:Jefferson County, Iowa
Sources (9)
via Wikidata · CC0
~7 min read
Encyclopedic overview
Jefferson County is a county located in the U.S. state of Iowa. As of the 2020 United States census, the population was 15,663. The county seat is Fairfield. The county was formed in January 1839, and was named for U.S. President Thomas Jefferson. Jefferson County comprises the Fairfield, IA Micropolitan Statistical Area.
Geography
Excerpted from Wikipedia’s “Jefferson County” article, available under the CC BY-SA 4.0 licence.
Gallery (5)
On the map
2 mapped locations