Polk County is located in the United States , Iowa . As of 2000, the population was 374 575 people. According to the US Census Bureau, in 2009 the county had a population of 429 439 people. [1] The district center is Des Moines .
| district | |
| Polk County | |
|---|---|
| Polk county | |
| A country | USA |
| Included in | Iowa |
| Adm. center | Des moines |
| History and Geography | |
| Date of formation | January 13, 1846 |
| Area | 1474 km² |
| Height | |
| Timezone | UTC-5 |
| Population | |
| Population | 374 575 people ( 2000 ) |
| Density | 254 people / km² |
| Digital identifiers | |
| FIPS Index | 153 |
| Official site | |
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Content
- 1 History
- 2 Geography
- 2.1 Highways
- 2.2 Neighboring Counties
- 3 Demographics
- 4 notes
History
Polk County was formed on January 13, 1846 .
Geography
According to the US Census Bureau, Polk County is 1,474 km².
Major Highways
- Federal Highway 35
- Federal Highway 80
- Federal Highway 235
- Highway 6
- Highway 65
- Highway 69
- Freeway 5
- Freeway 17
- Freeway 28
- Freeway 141
- Freeway 160
- Freeway 163
- Freeway 415
Neighboring Counties
- Boone (northwest)
- Storey (North)
- Jasper (East)
- Marion (southeast)
- Warren (south)
- Madison (southwest)
- Dallas (West)
Demographics
According to the 2000 census, lived 374 575 residents. Among them, 25.4% were children under 18 years old, 11.2% were people over 65 years old. 51.2% of the population were women.
The national composition was as follows: 89.1% of whites , 5.6% of African Americans , 0.5% of indigenous peoples , 3.1% of Asians , 7.0% of Hispanics . 1.5% of the population were representatives of two or more races.
The average per capita income in the county was $ 23,654. 9.9% of the population had an income below the subsistence level . The median household income was $ 56,980.
Also, 88.3% of the adult population had completed secondary education, and 29.7% had higher education.