Polk County, Minnesota
|Polk County, Minnesota|
Location in the state of Minnesota
Minnesota's location in the U.S.
|Founded||July 20, 1858|
|Named for||James Knox Polk|
|Largest city||East Grand Forks|
|• Total||1,997.81 sq mi (5,174 km2)|
|• Land||1,970.37 sq mi (5,103 km2)|
|• Water||27.44 sq mi (71 km2), 1.37%|
|• Density||16/sq mi (6/km²)|
|Time zone||Central: UTC-6/-5|
According to the 2000 census, the county has a total area of 1,997.81 square miles (5,174.3 km2), of which 1,970.37 square miles (5,103.2 km2) (or 98.63%) is land and 27.44 square miles (71.1 km2) (or 1.37%) is water. Native vegetation based on NRCS soils information shows: 
- Marshall County (north)
- Pennington County (northeast)
- Red Lake County (northeast)
- Clearwater County (east)
- Mahnomen County (southeast)
- Norman County (south)
- Traill County, North Dakota (southwest)
- Grand Forks County, North Dakota (west)
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.
Cities and towns
- "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.
- "Census 2010 Gazetteer Files". Retrieved July 2, 2013.
- Nelson, Steven (2011). Savanna Soils of Minnesota. Minnesota: Self. pp. 57-60. ISBN 978-0-615-50320-2.
- "U.S. Decennial Census". Census.gov. Retrieved September 1, 2013.
- 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|