Hamilton County
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Location within the U.S. state of Iowa
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Iowa's location within the U.S.
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| Coordinates: 42°22′55″N 93°42′39″W / 42.381944444444°N 93.710833333333°W / 42.381944444444; -93.710833333333 | |
| Country |  United States |
| State |  Iowa |
| Founded | 1856 |
| Named for | William W. Hamilton |
| Seat | Webster City |
| Largest city | Webster City |
| Area | |
| • Total | 578 sq mi (1,500 km2) |
| • Land | 577 sq mi (1,490 km2) |
| • Water | 0.8 sq mi (2 km2) 0.1% |
| Population
(2020)
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| • Total | 15,039 |
| • Estimate
(2023)
| 14,729  |
| • Density | 26/sq mi (10/km2) |
| Time zone | UTC−6 (Central) |
| • Summer (DST) | UTC−5 (CDT) |
| Congressional district | 4th |
| Website | www |
Hamilton County is a county located in the U.S. stateofIowa. As of the 2020 census, the population was 15,039.[1] The county seatisWebster City.[2] The county was named to honor William W. Hamilton, a President of the Iowa State Senate.[3]
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.[4] The largest body of water is Little Wall Lake.
| Census | Pop. | Note | %± |
|---|---|---|---|
| 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% | |
| 2020 | 15,039 | −4.0% | |
| 2023 (est.) | 14,729 | [5] | −2.1% |
| U.S. Decennial Census[6] 1790-1960[7] 1900-1990[8] 1990-2000[9] 2010-2018[10] | |||
The 2020 census recorded a population of 15,039 in the county, with a population density of 25.9672/sq mi (10.0260/km2). 94.75% of the population reported being of one race. There were 7,037 housing units, of which 6,283 were occupied.[1]
| Race | Num. | Perc. |
|---|---|---|
| White (NH) | 12,702 | 84.46% |
| Black or African American (NH) | 88 | 0.6% |
| Native American (NH) | 25 | 0.16% |
| Asian (NH) | 314 | 2.1% |
| Pacific Islander (NH) | 0 | 0% |
| Other/Mixed (NH) | 445 | 3% |
| HispanicorLatino | 1,465 | 9.74% |
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.[12]
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As of the census[13] 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 people/km2). There were 7,082 housing units at an average density of 12 units per square mile (4.6 units/km2). The racial makeup of the county was 96.71% White, 0.23% BlackorAfrican 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 HispanicorLatino 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.
Source:[15]
The population ranking of the following table is based on the 2020 census of Hamilton County.[1]
† county seat
| Rank | City/Town/etc. | Municipal type | Population (2020 Census) |
|---|---|---|---|
| 1 | † Webster City | City | 7,825 |
| 2 | Jewell Junction | City | 1,216 |
| 3 | Stratford (partially in Webster County) | City | 707 |
| 4 | Ellsworth | City | 508 |
| 5 | Stanhope | City | 364 |
| 6 | Williams | City | 307 |
| 7 | Kamrar | City | 179 |
| 8 | Blairsburg | City | 176 |
| 9 | Randall | City | 154 |
Hamilton County has been a swing county for most of its history. In the last 100 years, it has backed the losing candidate nationally only four times in the 1960, 1988, 2012 and 2020 presidential elections.
| Year | Republican | Democratic | Third party | |||
|---|---|---|---|---|---|---|
| No. | % | No. | % | No. | % | |
| 2020 | 4,956 | 62.39% | 2,843 | 35.79% | 144 | 1.81% |
| 2016 | 4,463 | 58.01% | 2,726 | 35.43% | 505 | 6.56% |
| 2012 | 3,991 | 50.35% | 3,782 | 47.71% | 154 | 1.94% |
| 2008 | 3,913 | 48.42% | 4,018 | 49.72% | 150 | 1.86% |
| 2004 | 4,367 | 52.39% | 3,895 | 46.73% | 73 | 0.88% |
| 2000 | 3,968 | 52.39% | 3,407 | 44.98% | 199 | 2.63% |
| 1996 | 3,109 | 42.72% | 3,455 | 47.48% | 713 | 9.80% |
| 1992 | 3,031 | 39.46% | 3,262 | 42.47% | 1,388 | 18.07% |
| 1988 | 3,277 | 43.73% | 4,156 | 55.46% | 61 | 0.81% |
| 1984 | 4,279 | 55.61% | 3,330 | 43.27% | 86 | 1.12% |
| 1980 | 4,745 | 57.40% | 2,741 | 33.16% | 780 | 9.44% |
| 1976 | 3,932 | 49.00% | 3,953 | 49.26% | 140 | 1.74% |
| 1972 | 4,803 | 60.87% | 2,913 | 36.92% | 174 | 2.21% |
| 1968 | 4,607 | 57.58% | 3,058 | 38.22% | 336 | 4.20% |
| 1964 | 3,127 | 37.53% | 5,195 | 62.35% | 10 | 0.12% |
| 1960 | 5,265 | 57.39% | 3,905 | 42.57% | 4 | 0.04% |
| 1956 | 5,667 | 59.56% | 3,829 | 40.25% | 18 | 0.19% |
| 1952 | 7,006 | 71.29% | 2,788 | 28.37% | 34 | 0.35% |
| 1948 | 3,535 | 48.13% | 3,613 | 49.19% | 197 | 2.68% |
| 1944 | 3,837 | 46.91% | 4,302 | 52.59% | 41 | 0.50% |
| 1940 | 4,183 | 44.03% | 5,279 | 55.56% | 39 | 0.41% |
| 1936 | 3,174 | 36.24% | 5,432 | 62.02% | 152 | 1.74% |
| 1932 | 2,330 | 30.56% | 5,191 | 68.09% | 103 | 1.35% |
| 1928 | 4,171 | 58.01% | 2,975 | 41.38% | 44 | 0.61% |
| 1924 | 4,401 | 60.74% | 490 | 6.76% | 2,355 | 32.50% |
| 1920 | 5,924 | 82.88% | 1,126 | 15.75% | 98 | 1.37% |
| 1916 | 3,037 | 70.94% | 1,125 | 26.28% | 119 | 2.78% |
| 1912 | 831 | 19.37% | 1,041 | 24.27% | 2,418 | 56.36% |
| 1908 | 2,765 | 68.17% | 1,145 | 28.23% | 146 | 3.60% |
| 1904 | 3,118 | 77.08% | 746 | 18.44% | 181 | 4.47% |
| 1900 | 3,259 | 73.15% | 1,134 | 25.45% | 62 | 1.39% |
| 1896 | 3,074 | 69.25% | 1,300 | 29.29% | 65 | 1.46% |
School districts include:[17]
Former school districts:
Places adjacent to Hamilton County, Iowa
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Municipalities and communities of Hamilton County, Iowa, United States
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| Footnotes | ‡This populated place also has portions in an adjacent county or counties | |
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42°22′55″N 93°42′39″W / 42.38194°N 93.71083°W / 42.38194; -93.71083
