Poweshiek County, Iowa

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Poweshiek County, Iowa
Poweshiek County IA Courthouse
Map of Iowa highlighting Poweshiek County
Location in the state of Iowa
Map of USA IA
Iowa's location in the U.S.
Founded 1843
Seat Montezuma
Largest city Grinnell
 - Total
 - Land
 - Water

586 sq mi (1,518 km²)
585 sq mi (1,515 km²)
1.1 sq mi (3 km²), 0.2%
 - (2010)
 - Density

32/sq mi (12/km²)
Congressional district 1st
Time zone Central: UTC-6/-5

Poweshiek County is a county located in southeastern part of the U.S. state of Iowa. As of the 2010 census, the population was 18,914.[1] The county seat is Montezuma.[2] The county is named for the Indian chief of the Fox tribe who signed the treaty ending the Black Hawk War. It is located along Interstate 80, between Des Moines and Iowa City.


Poweshiek County was formed in 1843. It was named for the chief of the Fox Indians. The Poweshiek County Courthouse, completed in 1859, is listed on the National Register of Historic Places.[3]

Government and InfrastructureEdit

The current County Supervisors are Larry Wilson, Trever White, and A.S. Moffit.


Poweshiek County is served by Grinnell Regional Medical Center, an acute care hospital licensed for 81 beds. GRMC was established in 1967 after the merger of two hospitals.


According to the U.S. Census Bureau, the county has a total area of 586 square miles (1,520 km2), of which 585 square miles (1,520 km2) is land and 1.1 square miles (2.8 km2) (0.2%) is water.[4] It is drained by the north fork of Skunk River, which crosses the southwest corner, and by English River and other streams.[5]

Major highwaysEdit

Adjacent countiesEdit


Historical populations
Census Pop.
1850 615
1860 5,668 821.6%
1870 15,581 174.9%
1880 18,936 21.5%
1890 18,394 −2.9%
1900 19,414 5.5%
1910 19,589 0.9%
1920 19,910 1.6%
1930 18,727 −5.9%
1940 18,758 0.2%
1950 19,344 3.1%
1960 19,300 −0.2%
1970 18,803 −2.6%
1980 19,306 2.7%
1990 19,033 −1.4%
2000 18,815 −1.1%
2010 18,914 0.5%
Est. 2015 18,550 [6] −1.4%
U.S. Decennial Census[7]
1790-1960[8] 1900-1990[9]
1990-2000[10] 2010-2013[1]

2010 censusEdit

The 2010 census recorded a population of 18,914 in the county, with a population density of 32.3300/sq mi (12.4827/km2). There were 8,949 housing units, of which 7,555 were occupied.[11]

2000 censusEdit

USA Poweshiek County, Iowa age pyramid

2000 Census Age Pyramid for Poweshiek County

As of the census[12] of 2000, there were 18,815 people, 7,398 households, and 4,882 families residing in the county. The population density was 32 people per square mile (12/km²). There were 8,556 housing units at an average density of 15 per square mile (6/km²). The racial makeup of the county was 96.74% White, 0.55% Black or African American, 0.23% Native American, 1.07% Asian, 0.05% Pacific Islander, 0.49% from other races, and 0.87% from two or more races. 1.20% of the population were Hispanic or Latino of any race.

There were 7,398 households out of which 29.0% had children under the age of 18 living with them, 55.8% were married couples living together, 7.4% had a female householder with no husband present, and 34.0% were non-families. 29.2% of all households were made up of individuals and 13.9% had someone living alone who was 65 years of age or older. The average household size was 2.35 and the average family size was 2.88.

In the county the population was spread out with 22.7% under the age of 18, 12.8% from 18 to 24, 24.4% from 25 to 44, 22.5% from 45 to 64, and 17.6% who were 65 years of age or older. The median age was 38 years. For every 100 females there were 92.5 males. For every 100 females age 18 and over, there were 88.8 males.

The median income for a household in the county was $37,836, and the median income for a family was $46,599. Males had a median income of $32,781 versus $22,465 for females. The per capita income for the county was $18,629. About 6.2% of families and 9.8% of the population were below the poverty line, including 12.0% of those under age 18 and 5.9% of those age 65 or over.


Poweshiek County is served by three community school districts: [13]

School District Location Num of
Num of
High School District
Web site
BGM Community School District
Brooklyn 1 500+ - BGM BGM
Grinnell-Newburg School District Grinnell 6 1,750 - Grinnell Grinnell
Montezuma Community School District Montezuma 1 512 - Montezuma Montezuma

Poweshiek County is also home to Grinnell College, a small liberal arts college founded in 1846 and located in Grinnell..

There is one private school in the county, Central Iowa Christian School, in Grinnell.



census-designated placesEdit

other communitiesEdit

Population rankingEdit

The population ranking of the following table is based on the 2010 census of Poweshiek County.[14]

county seat

Rank City/Town/etc. Municipal type Population (2010 Census)

1 Grinnell City 9,218
2 Brooklyn City 1,468
3 Montezuma City 1,462
4 Victor (mostly in Iowa County) City 893
5 Holiday Lake CDP 433
6 Malcom City 287
7 Deep River City 279
8 Barnes City (partially in Mahaska County) City 176
9 Searsboro City 148
10 Hartwick City 86
11 Guernsey City 63

See alsoEdit


  1. ^ a b "State & County QuickFacts". United States Census Bureau. Retrieved July 20, 2014. 
  2. ^ "Find a County". National Association of Counties. Retrieved 2011-06-07. 
  3. ^ "National Register Information System". National Register of Historic Places. National Park Service. 2009-03-13. 
  4. ^ "US Gazetteer files: 2010, 2000, and 1990". United States Census Bureau. 2011-02-12. Retrieved 2011-04-23. 
  5. ^ Wikisource-logo "Poweshiek". The American Cyclopædia. 1879. 
  6. ^ "County Totals Dataset: Population, Population Change and Estimated Components of Population Change: April 1, 2010 to July 1, 2015". Retrieved July 2, 2016. 
  7. ^ "U.S. Decennial Census". United States Census Bureau. Retrieved July 20, 2014. 
  8. ^ "Historical Census Browser". University of Virginia Library. Retrieved July 20, 2014. 
  9. ^ "Population of Counties by Decennial Census: 1900 to 1990". United States Census Bureau. Retrieved July 20, 2014. 
  10. ^ "Census 2000 PHC-T-4. Ranking Tables for Counties: 1990 and 2000". United States Census Bureau. Retrieved July 20, 2014. 
  11. ^ "Population & Housing Occupancy Status 2010". United States Census Bureau American FactFinder. Retrieved 2011-06-01. 
  12. ^ "American FactFinder". United States Census Bureau. Retrieved 2008-01-31. 
  13. ^ "Poweshiek County Schools |". Retrieved 2013-05-04. 
  14. ^

External linksEdit

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Coordinates: 41°41′12″N 92°31′34″W / 41.68667, -92.52611

This page uses content from the English language Wikipedia. The original content was at Poweshiek County, Iowa. The list of authors can be seen in the page history. As with this Familypedia wiki, the content of Wikipedia is available under the Creative Commons License.

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