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Hamilton, Iowa
Location of Hamilton, Iowa
Location of Hamilton, Iowa
Country  United States
State  Iowa
County Marion
Area
 • Total 0.51 sq mi (1.31 km2)
 • Land 0.51 sq mi (1.31 km2)
 • Water 0.00 sq mi (0.00 km2)
Elevation
899 ft (274 m)
Population
 (2020)
 • Total 119
 • Density 235.18/sq mi (90.75/km2)
Time zone UTC-6 (Central (CST))
 • Summer (DST) UTC-5 (CDT)
ZIP code
50116
Area code(s) 641
FIPS code 19-33870
GNIS feature ID 0457217

Hamilton is a city in Marion County, Iowa, United States. The population was 119 at the time of the 2020 census.

Geography

Hamilton is located at 41°10′15″N 92°54′14″W / 41.17083°N 92.90389°W / 41.17083; -92.90389 (41.170926, -92.903948).

According to the United States Census Bureau, the city has a total area of 0.54 square miles (1.40 km2), all of it land.

Demographics

Historical populations
Year Pop. ±%
1860 107 —    
1870 133 +24.3%
1880 123 −7.5%
1900 538 +337.4%
1910 391 −27.3%
1920 474 +21.2%
1930 296 −37.6%
1940 291 −1.7%
1950 245 −15.8%
1960 197 −19.6%
1970 186 −5.6%
1980 163 −12.4%
1990 115 −29.4%
2000 144 +25.2%
2010 130 −9.7%
2020 119 −8.5%
Source: and Iowa Data Center
Source:
U.S. Decennial Census
HamiltonIowaPopPlot
The population of Hamilton, Iowa from US census data

2010 census

As of the census of 2010, there were 130 people, 49 households, and 36 families living in the city. The population density was 240.7 inhabitants per square mile (92.9/km2). There were 54 housing units at an average density of 100.0 per square mile (38.6/km2). The racial makeup of the city was 100.0% White. Hispanic or Latino of any race were 1.5% of the population.

There were 49 households, of which 38.8% had children under the age of 18 living with them, 40.8% were married couples living together, 22.4% had a female householder with no husband present, 10.2% had a male householder with no wife present, and 26.5% were non-families. 24.5% of all households were made up of individuals, and 12.3% had someone living alone who was 65 years of age or older. The average household size was 2.65 and the average family size was 2.97.

The median age in the city was 39.5 years. 24.6% of residents were under the age of 18; 9.4% were between the ages of 18 and 24; 26.2% were from 25 to 44; 28.4% were from 45 to 64; and 11.5% were 65 years of age or older. The gender makeup of the city was 52.3% male and 47.7% female.

Education

The Twin Cedars Community School District operates local public schools.

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