Hamilton County, Iowa facts for kids

Kids Encyclopedia Facts
Hamilton County, Iowa
Map

Location in the state of Iowa
Map of the USA highlighting Iowa
Iowa's location in the U.S.
Statistics
Founded 1856
Seat Webster City
Largest City Webster City
Area
 - Total
 - Land
 - Water

578 sq mi (1,497 km²)
577 sq mi (1,494 km²)
0.8 sq mi (2 km²), 0.1%
Population
 - (2010)
 - Density

15,673
27/sq mi (10/km²)
Time zone Central: UTC-6/-5
Website: www.hamiltoncounty.org

Hamilton County is a county located in the U.S. state of Iowa. As of the 2010 census, the population was 15,673. The county seat is Webster City. The county was named in honor of William W. Hamilton, who served as President of the Iowa State Senate.

Geography

According to the U.S. Census Bureau, the county has a total area of 578 square miles (1,500 km2), of which 577 square miles (1,490 km2) is land and 0.8 square miles (2.1 km2) (0.1%) is water.

Major highways

  • I-35.svg Interstate 35
  • US 20.svg U.S. Highway 20
  • US 69.svg U.S. Highway 69
  • Iowa 17.svg Iowa Highway 17
  • Iowa 175.svg Iowa Highway 175

Adjacent counties

Demographics

Historical population
Census Pop.
1860 1,699
1870 6,055 256.4%
1880 11,252 85.8%
1890 15,319 36.1%
1900 19,514 27.4%
1910 19,242 −1.4%
1920 19,531 1.5%
1930 20,978 7.4%
1940 19,922 −5.0%
1950 19,660 −1.3%
1960 20,032 1.9%
1970 18,383 −8.2%
1980 17,862 −2.8%
1990 16,071 −10.0%
2000 16,438 2.3%
2010 15,673 −4.7%
Est. 2015 15,190 −3.1%
U.S. Decennial Census
1790-1960 1900-1990
1990-2000 2010-2013

2010 census

The 2010 census recorded a population of 15,673 in the county, with a population density of 27.1780/sq mi (10.4935/km2). There were 7,219 housing units, of which 6,540 were occupied.

2000 census

USA Hamilton County, Iowa age pyramid
2000 Census Age Pyramid for Hamilton County

As of the census of 2000, there were 16,438 people, 6,692 households, and 4,597 families residing in the county. The population density was 28 people per square mile (11/km²). There were 7,082 housing units at an average density of 12 per square mile (5/km²). The racial makeup of the county was 96.71% White, 0.23% Black or African American, 0.20% Native American, 1.46% Asian, 0.01% Pacific Islander, 0.61% from other races, and 0.78% from two or more races. 1.42% of the population were Hispanic or Latino of any race.

There were 6,692 households out of which 30.60% had children under the age of 18 living with them, 57.90% were married couples living together, 7.60% had a female householder with no husband present, and 31.30% were non-families. 27.50% of all households were made up of individuals and 13.60% had someone living alone who was 65 years of age or older. The average household size was 2.43 and the average family size was 2.95.

In the county, the population was spread out with 25.40% under the age of 18, 7.10% from 18 to 24, 27.10% from 25 to 44, 22.40% from 45 to 64, and 18.00% who were 65 years of age or older. The median age was 39 years. For every 100 females there were 98.00 males. For every 100 females age 18 and over, there were 94.80 males.

The median income for a household in the county was $38,658, and the median income for a family was $45,771. Males had a median income of $30,579 versus $23,595 for females. The per capita income for the county was $18,801. About 4.30% of families and 6.30% of the population were below the poverty line, including 7.70% of those under age 18 and 5.50% of those age 65 or over.

Communities

Population ranking

The population ranking of the following table is based on the 2010 census of Hamilton County.

county seat

Rank City/Town/etc. Municipal type Population (2010 Census)
1 Webster City City 8,070
2 Jewell Junction City 1,215
3 Stratford (partially in Webster County) City 743
4 Ellsworth City 531
5 Stanhope City 422
6 Williams City 344
7 Blairsburg City 215
8 Kamrar City 199
9 Randall City 173

Hamilton County, Iowa Facts for Kids. Kiddle Encyclopedia.