Polk County, Minnesota
|Polk County, Minnesota|
Location in the state of Minnesota
Minnesota's location in the U.S.
|Founded||July 20, 1858 (created)
|Named for||James Knox Polk|
|Largest city||East Grand Forks|
|• Total||1,998 sq mi (5,175 km2)|
|• Land||1,971 sq mi (5,105 km2)|
|• Water||27 sq mi (70 km2), 1.3%|
|• Density||16/sq mi (6/km²)|
|Time zone||Central: UTC-6/-5|
Polk County is a county located in the U.S. state of Minnesota. The population was at 31,600 at the 2010 census. Its county seat is Crookston, and the largest community is East Grand Forks. The county was formed in 1858 and organized in 1872.
According to the U.S. Census Bureau, the county has a total area of 1,998 square miles (5,170 km2), of which 1,971 square miles (5,100 km2) is land and 27 square miles (70 km2) (1.3%) is water. Native vegetation based on NRCS soils information shows: 
National protected areas
As of the census of 2000, there were 31,369 people, 12,070 households, and 8,050 families residing in the county. The population density was 16 people per square mile (6/km²). There were 14,008 housing units at an average density of 7 per square mile (3/km²). The racial makeup of the county was 94.18% White, 0.33% Black or African American, 1.30% Native American, 0.30% Asian, 0.02% Pacific Islander, 2.57% from other races, and 1.30% from two or more races. 4.79% of the population were Hispanic or Latino of any race. 41.7% were of Norwegian, 19.7% German and 5.8% French ancestry.
There were 12,070 households out of which 32.30% had children under the age of 18 living with them, 54.90% were married couples living together, 8.50% had a female householder with no husband present, and 33.30% were non-families. 28.90% of all households were made up of individuals and 13.80% had someone living alone who was 65 years of age or older. The average household size was 2.47 and the average family size was 3.07.
In the county the population was spread out with 25.90% under the age of 18, 9.70% from 18 to 24, 24.80% from 25 to 44, 22.20% from 45 to 64, and 17.40% who were 65 years of age or older. The median age was 38 years. For every 100 females there were 98.10 males. For every 100 females age 18 and over, there were 95.50 males.
The median income for a household in the county was $35,105, and the median income for a family was $44,310. Males had a median income of $31,472 versus $21,535 for females. The per capita income for the county was $17,279. About 7.30% of families and 10.90% of the population were below the poverty line, including 13.30% of those under age 18 and 10.90% of those age 65 or over.
- Andover Township
- Angus Township
- Badger Township
- Belgium Township
- Brandsvold Township
- Brandt Township
- Brislet Township
- Bygland Township
- Chester Township
- Columbia Township
- Crookston Township
- Eden Township
- Esther Township
- Euclid Township
- Fairfax Township
- Fanny Township
- Farley Township
- Fisher Township
- Garden Township
- Garfield Township
- Gentilly Township
- Godfrey Township
- Grand Forks Township
- Grove Park-Tilden Township
- Gully Township
- Hammond Township
- Helgeland Township
- Higdem Township
- Hill River Township
- Hubbard Township
- Huntsville Township
- Johnson Township
- Kertsonville Township
- Keystone Township
- King Township
- Knute Township
- Lessor Township
- Liberty Township
- Lowell Township
- Nesbit Township
- Northland Township
- Onstad Township
- Parnell Township
- Queen Township
- Reis Township
- Rhinehart Township
- Roome Township
- Rosebud Township
- Russia Township
- Sandsville Township
- Scandia Township
- Sletten Township
- Sullivan Township
- Tabor Township
- Tynsid Township
- Vineland Township
- Winger Township
- Woodside Township
- "Minnesota Place Names". Minnesota Historical Society. Retrieved March 19, 2014.
- "State & County QuickFacts". United States Census Bureau. Retrieved September 1, 2013.
- "Find a County". National Association of Counties. Retrieved 2011-06-07.
- "2010 Census Gazetteer Files". United States Census Bureau. August 22, 2012. Retrieved October 24, 2014.
- Nelson, Steven (2011). Savanna Soils of Minnesota. Minnesota: Self. pp. 57-60. ISBN 978-0-615-50320-2.
- "U.S. Decennial Census". United States Census Bureau. Retrieved October 24, 2014.
- "Historical Census Browser". University of Virginia Library. Retrieved October 24, 2014.
- "Population of Counties by Decennial Census: 1900 to 1990". United States Census Bureau. Retrieved October 24, 2014.
- "Census 2000 PHC-T-4. Ranking Tables for Counties: 1990 and 2000". United States Census Bureau. Retrieved October 24, 2014.
- R.I. Holcombe and William H Bingham, Compendium of History and Biography of Polk County, Minnesota. Minneapolis: W. H. Bingham & Co., 1916.
- Huber D. McLellan, The History of the Early Settlement and Development of Polk County, Minnesota. PhD dissertation. Northwestern University, 1928.
- Polk County Historical Society, Bicentennial History of Polk County, Minnesota: Pioneers of the Valley. n.c.: Polk County Historical Society, 1976.
- Polk County Historical Society, The Polk County Historian. (journal)
- Claude Eugene Wentsel, Polk County, Minnesota, in the World War. Ada, MN: C.E. Wentsel, 1922.
- Winger Golden Jubilee Historical Committee, Golden Jubilee, Winger, Minnesota, 1904-1954. Winger, MN: Winger Enterprise, n.d. .
- Maxine Workman, Minnesota Cemeteries, Polk County. West Fargo, ND: Red River Genealogy Society, 1988.
||Marshall County||Pennington County and Red Lake County|
|Grand Forks County, North Dakota||Clearwater County|
|Traill County, North Dakota||Norman County||Mahnomen County|