Marshall County
Sign in to saveAlso known as Marshall County, Iowa, Marshall County, IA
county in Iowa, United States
Key facts
- Country
- United States
- State
- Iowa
- Founded
- January 13, 1846
- Named after
- John Marshall
- Seat
- Marshalltown
- Largest city
- Marshalltown
- Total
- 573.199 sq mi (1,484.58 km )
- Land
- 572.503 sq mi (1,482.78 km )
- Water
- 0.696 sq mi (1.80 km ) 0.12%
- Estimate 2025
- 39,890
- Density
- 70.052/sq mi (27.047/km )
- Time zone
- UTC−6 ( Central )
- Summer dst
- UTC−5 ( CDT )
- Congressional district
- 1st
- Website
- marshallcountyia.gov
via Wikipedia infobox
Wikidata facts
- Named after
- John Marshall
- Official name
- Marshall County
- Country
- United States
- Located in
- Iowa
- Contains
- Marshalltown
- Capital
- Marshalltown
- Population
- 40105
- Area
- 1484
- Time zone
- Q5390
- Shares border with
- Grundy County
- Official website
- www.co.marshall.ia.us
- Image
- Marshall County Courthouse DH.jpg
- Households
- 15388
Show 9 more facts
- different from
- Marshall County
- Commons category
- Marshall County, Iowa
- topic's main category
- Category:Marshall County, Iowa
- inception
- 1846-00-00
- category of associated people
- Category:People from Marshall County, Iowa
- water as percent of area
- 0.1
- native label
- Marshall County
- per capita income
- 28152
- topic has template
- Template:Marshall County, Iowa
Sources (10)
via Wikidata · CC0
~7 min read
Encyclopedic overview
Marshall County is a county located in the U.S. state of Iowa. As of the 2020 census, the population was 40,105, and was estimated to be 39,890 in 2025. The county seat and largest city is Marshalltown. The county was formed on January 13, 1846, and named after John Marshall, Chief Justice of the United States Supreme Court. Marshall County comprises the Marshalltown, Iowa Micropolitan Statistical Area. In 2010, the center of population of Iowa was located in Marshall County, near Melbourne.
Geography
Excerpted from Wikipedia’s “Marshall County” article, available under the CC BY-SA 4.0 licence.