Polk County, Iowa

The Polk County Courthouse in Des Moines, listed on NRHP No. 79000925
administration
US state :	Iowa
Administrative headquarters :	Des Moines
Address of the administrative headquarters:	County Administrative Office Bldg. 111 Court Avenue Des Moines, IA 50309-2218
Foundation :	January 13, 1846
Made up from:	Original County
Area code :	001 515
Demographics
Residents :	430,640  (2010)
Population density :	292 inhabitants / km 2
geography
Total area :	1533 km²
Water surface :	58 km²
map
Website : www.polkcountyiowa.gov

The Polk County is a county in the US -amerikanischen State Iowa . In 2010 , the county had 430,640 people and a population density of 292 people per square kilometer. By 2013 the number of inhabitants increased slightly to 451,677. The county seat is Des Moines .

Polk County forms the core of the metropolitan area around the city of Des Moines.

geography

The county is located slightly south of the geographic center of Iowa and is traversed by the Des Moines River . It has an area of ​​1533 square kilometers, of which 58 square kilometers are water. The following neighboring counties border Polk County:

Boone County	Story County
Dallas County		Jasper County
Madison County	Warren County	Marion County

history

James K. Polk

Population development
Census	Residents		± in%
1850	4513		-
1860	11,625		157.6%
1870	27,857		139.6%
1880	42,395		52.2%
1890	65,410		54.3%
1900	82,624		26.3%
1910	110,438		33.7%
1920	154.029		39.5%
1930	172.837		12.2%
1940	195,835		13.3%
1950	226.010		15.4%
1960	266.315		17.8%
1970	286.101		7.4%
1980	303.170		6%
1990	327.140		7.9%
2000	374601		14.5%
2010	430,640		15%
2013 estimate	451,677		4.9%
Before 1900 1900–1990 2000 2010–2013

Three years before the county was founded, Captain James Allen came to the area around what is now Des Moines to build a fort. This was named after the Des Moines River , the largest and most important river in the area between the Mississippi and Missouri rivers .

The settlements of Brooklyn, Polk City, Dudley, and Fort Des Moines decided to form a new county. In 1845 MPs were sent to the Legislative Assembly of the Iowa Territory to determine the boundaries of the new county.

On January 13, 1845, a law was finally passed that included the establishment of the county and the definition of its boundaries. On January 17, 1846, the organization of Polk County, named after the President James K. Polk (1795-1849). In the same year, Brooklyn was selected as the seat of administration, which is now part of the city of Des Moines.

The first court and administration building was also built in 1846. Construction of a new building began in 1858, but construction dragged on until 1866 due to the civil war . 1887–1888 the building got a new roof, a dome and an extension.

In 1900 it was decided to build what is now the Polk County Courthouse , which was opened in 1906. In 1962 the building was modernized.

However, since the building no longer met all requirements, the old post office was renovated in 1975 to accommodate part of the administration there.

population

According to the 2010 census , Polk County had 430,640 people in 168,352 households. The population density was 292 inhabitants per square kilometer. Statistically, there were 2.44 people each in the 168,352 households.

The racial the population was composed of 84.7 percent white, 6.0 percent African American, 0.3 percent Native American, 3.5 percent Asian and other ethnic groups; 2.4 percent were descended from two or more races. Hispanic or Latino of any race was 7.6 percent of the population.

25.5 percent of the population were under 18 years old, 63.7 percent were between 18 and 64 and 10.8 percent were 65 years or older. 51.0 percent of the population was female.

The median income for a household was 56,094  USD . The per capita income was $ 29,246. 10.3 percent of the population lived below the poverty line.

Localities

Citys and Census-designated places (CDP) :

place	Residents 2010	Residents 2013	FIPS	GNIS	Type
Des Moines 3	203,433	207,510	19-21000	465961	City
West Des Moines 3	56,609	61,255	19-83910	462839	City
Ankeny	45,582	51,567	19-02305	454194	City
Urbandals 2	39,463	41,776	19-79950	462504	City
Johnston	17,278	19,798	19-39765	457978	City
Clive 2	15,447	16,590	19-14520	455485	City
Altoona	14,541	15,653	19-01630	454160	City
Norwalk 1	8945	9639	19-57675	459658	City
Pleasant Hill	8785	9082	19-63525	460234	City
Grimes 2	8246	9335	19-33060	457148	City
Windsor Heights	4860	4891	19-86250	463128	City
Carlisle 1	3876	3951	19-10765	455166	City
Bondurant	3860	4614	19-07390	454745	City
Polk City	3418	3976	19-64020	460351	City
Saylorville	3301	3085	19-70995	461450	CDP
Mitchellville 4	2254	2256	19-52950	459156	City
Granger 2	1244	1367	19-32160	457046	City
Elkhart	683	691	19-24735	456304	City
Runnells	507	507	19-69240	460848	City
Alleman	432	440	19-01180	454132	City
Sheldahl 5	319	321	19-72345	461555	City

^{1 - partly in Warren County
2 - partly in Dallas County
3 - partly in Dallas and Warren County
4 - partly in Jasper County
5 - partly in Boone and Story County}

Unincorporated communities not recorded separately from the census :

Adelphi Adventureland Estates Avon Berwick Camp Dodge Capitol Heights Carbondale

Carney Clover Hills Commerce Crocker East Des Moines East Fourteenth Farrar

Enterprise Herrold Highland park Ivy Lovington Lundstrom Heights Marquisville

Norwoodville Oral laboratory Risingsun Santiago Saydel South Des Moines White Oak

structure

Polk County is divided into 21 townships :

Township Pop. (2010) FIPS Allen Township 2448    19-90042 Beaver Township 3032    19-90168 Bloomfield Township 31,301    19-90270 Camp Township 2183    19-90456 Clay Township 16,022    19-90690 Crocker Township 45,595    19-90858 Delaware Township 8317    19-90951

Township Pop. (2010) FIPS Des Moines Township 98,631    19-90987 Douglas Township 5542    19-91056 Elkhart Township 1525    19-91185 Four Mile Township 9250    19-91371 Franklin Township 3760    19-91425 Jefferson Township 7695    19-92247 Lee Township 63,026    19-92409

Township Pop. (2010) FIPS Lincoln Township 1001    19-92595 Madison Township 3488    19-92781 Saylor Township 6472    19-93759 Union Township 314    19-94257 Walnut Township 66,174    19-94410 Washington Township 420    19-94548 Webster Township 54,365    19-94629

There is also the Saylorville Reservoir UT , an unorganized territory that does not belong to any township.

See also

• Polk County Courthouse
• List of Entries on the National Register of Historic Places in Polk County, Iowa

Individual evidence

1. ^ Extract from the National Register of Historic Places . Retrieved March 13, 2011
2. ^ Polk County ( English ) In: Geographic Names Information System . United States Geological Survey . Retrieved February 22, 2011.
3. ↑ ^{a b c} U.S. Census Bureau, State & County QuickFacts - Polk County, IA. Retrieved November 4, 2014
4. ↑ ^{a b} National Association of Counties.Retrieved November 4, 2014
5. ^ US Census Bureau - Census of Population and Housing.Retrieved March 15, 2011
6. ^ Extract from Census.gov.Retrieved February 16, 2011
7. ^ E-ReferenceDesk, Polk County, Iowa - County History.Retrieved March 2, 2011
8. ↑ ^{a b} American Fact Finder.Retrieved April 13, 2015
9. ↑ 2010 US Census Iowa Township and Other Subdivision Population. Retrieved July 23, 2019 . 

Web links

Commons : Polk County, Iowa  - Collection of pictures, videos, and audio files

• Official website
• city-data.com - Polk County, Iowa

Coordinates: 41 ° 41 ′  N , 93 ° 34 ′  W