Hamilton County, Iowa

{{Infobox U.S. county

| county = Hamilton County

| state = Iowa

| ex image = Hamilton County IA Courthouse.jpg

| ex image size = 240px

| ex image cap = Hamilton County Courthouse

| seal =

| founded year = 1856

| founded date =

| named for =William W. Hamilton

| seat wl = Webster City

| largest city wl = Webster City

| area_total_sq_mi = 578

| area_land_sq_mi = 577

| area_water_sq_mi = 0.8

| area percentage = 0.1

| population_as_of = 2020

| population_total = 15039

| pop_est_as_of = 2023

| population_est = 14729 {{decrease}}

| population_density_sq_mi = auto

| time zone = Central

| footnotes =

| web = https://www.hamiltoncounty.iowa.gov/

| district = 4th }}

Hamilton County is a county located in the U.S. state of Iowa. As of the 2020 census, the population was 15,039.{{cite web |title=2020 Census State Redistricting Data |url=https://www2.census.gov/programs-surveys/decennial/2020/data/01-Redistricting_File--PL_94-171/Iowa/ |website=census.gov |publisher=United states Census Bureau |access-date=August 12, 2021}} The county seat is Webster City.{{cite web|url=http://www.naco.org/Counties/Pages/FindACounty.aspx|access-date=June 7, 2011|title=Find a County|publisher=National Association of Counties}} The county was named to honor William W. Hamilton, a President of the Iowa State Senate.{{cite book| url=https://archive.org/details/bub_gb_9V1IAAAAMAAJ| title=The Origin of Certain Place Names in the United States| publisher=Govt. Print. Off.| author=Gannett, Henry|year=1905|page=[https://archive.org/details/bub_gb_9V1IAAAAMAAJ/page/n147 148]}}

Geography

According to the U.S. Census Bureau, the county has a total area of {{convert|578|sqmi}}, of which {{convert|577|sqmi}} is land and {{convert|0.8|sqmi}} (0.1%) is water.{{cite web|url=https://www.census.gov/geographies/reference-files/time-series/geo/gazetteer-files.html|publisher=United States Census Bureau|access-date=April 23, 2011|date=February 12, 2011|title=US Gazetteer files: 2010, 2000, and 1990}} The largest body of water is Little Wall Lake.

=Major highways=

=Transit=

=Adjacent counties=

Wright County (north)
Hardin County (east)
Story County (southeast)
Boone County (southwest)
Webster County (west)

Demographics

{{US Census population

|1860= 1699

|1870= 6055

|1880= 11252

|1890= 15319

|1900= 19514

|1910= 19242

|1920= 19531

|1930= 20978

|1940= 19922

|1950= 19660

|1960= 20032

|1970= 18383

|1980= 17862

|1990= 16071

|2000= 16438

|2010= 15673

|2020= 15039

|estyear=2023

|estimate=14729

|estref={{cite web|url=https://www.census.gov/programs-surveys/popest/data/tables.html|title=Annual Estimates of the Resident Population for Counties: April 1, 2020 to July 1, 2023|publisher=United States Census Bureau|access-date=April 2, 2024}}

|align-fn=center

|footnote=U.S. Decennial Census{{cite web|url=https://www.census.gov/programs-surveys/decennial-census.html|title=U.S. Decennial Census|publisher=United States Census Bureau|access-date=July 17, 2014}}
1790-1960{{cite web|url=http://mapserver.lib.virginia.edu|title=Historical Census Browser|publisher=University of Virginia Library|access-date=July 17, 2014}} 1900-1990{{cite web|url=https://www.census.gov/population/cencounts/ia190090.txt|title=Population of Counties by Decennial Census: 1900 to 1990|publisher=United States Census Bureau|access-date=July 17, 2014}}
1990-2000{{cite web|url=https://www.census.gov/population/www/cen2000/briefs/phc-t4/tables/tab02.pdf|title=Census 2000 PHC-T-4. Ranking Tables for Counties: 1990 and 2000|publisher=United States Census Bureau|access-date=July 17, 2014}} 2010-2018{{cite web|title=State & County QuickFacts|url=http://quickfacts.census.gov/qfd/states/19/19079.html|publisher=United States Census Bureau|access-date=July 17, 2014|url-status=dead|archive-url=https://web.archive.org/web/20110607065350/http://quickfacts.census.gov/qfd/states/19/19079.html|archive-date=June 7, 2011}}

}}

File:HamiltonCountyIowaPop2020.png

=2020 census=

File:HamiltonCountyIA2022PopPyr.png for Hamilton County from ACS 5-year estimates]]

The 2020 census recorded a population of 15,039 in the county, with a population density of {{Pop density|15039|579.152815|sqmi|km2}}. 94.75% of the population reported being of one race. There were 7,037 housing units, of which 6,283 were occupied.

class="wikitable"

|+Hamilton County Racial Composition{{Cite web|title =P2 HISPANIC OR LATINO, AND NOT HISPANIC OR LATINO BY RACE – 2020: DEC Redistricting Data (PL 94-171) – Hamilton County, Iowa|url=https://data.census.gov/cedsci/table?q=Hamilton%20County,%20Iowa&t=Race%20and%20Ethnicity&tid=DECENNIALPL2020.P2}}

!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%

Other/Mixed (NH)

|445

|3%

Hispanic or Latino

|1,465

|9.74%

=2010 census=

The 2010 census recorded a population of 15,673 in the county, with a population density of {{Pop density|15673|576.68|sqmi|km2}}. There were 7,219 housing units, of which 6,540 were occupied.{{cite web|url=https://www2.census.gov/library/publications/decennial/2010/cph-2/cph-2-17.pdf|title=Population & Housing Occupancy Status 2010|publisher=United States Census Bureau - American FactFinder|access-date=August 15, 2022}}

=2000 census=

As of the census{{cite web|url=https://www.census.gov|publisher=United States Census Bureau|access-date=January 31, 2008|title=U.S. Census website}} of 2000, there were 16,438 people, 6,692 households, and 4,597 families residing in the county. The population density was {{convert|28|/mi2|/km2|disp=preunit|people |people}}. There were 7,082 housing units at an average density of {{convert|12|/mi2|/km2|disp=preunit|units |units|}}. 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

=Cities=

=Unincorporated communities=

Homer{{Cite web|url=https://sites.google.com/site/hamiltoncountyhistory/home/ghost-towns/homer|title=Homer - Hamilton County History|website=Hamilton County History}}

=Townships=

Source:{{Cite web|url=http://digital.lib.uiowa.edu/cdm/ref/collection/hixson/id/718|title=Plat book of Hamilton County, Iowa|website=Iowa Digital Library|access-date=June 11, 2017|archive-date=November 11, 2016|archive-url=https://web.archive.org/web/20161111121205/http://digital.lib.uiowa.edu/cdm/ref/collection/hixson/id/718|url-status=dead}}

=Population ranking=

The population ranking of the following table is based on the 2020 census of Hamilton County.

† county seat

class="wikitable sortable"
Rank !City/Town/etc. !Municipal type !Population (2020 Census)
style="background-color:#FFFACD;" \| 1 \|† Webster City \| City \| 7,825
style="background-color:#FFFACD;" \| 2 \|Jewell Junction \| City \| 1,216
style="background-color:#FFFACD;" \| 3 \|Stratford (partially in Webster County) \| City \| 707
style="background-color:#FFFACD;" \| 4 \|Ellsworth \| City \| 508
style="background-color:#FFFACD;" \| 5 \|Stanhope \| City \| 364
style="background-color:#FFFACD;" \| 6 \|Williams \| City \| 307
style="background-color:#FFFACD;" \| 7 \|Kamrar \| City \| 179
style="background-color:#FFFACD;" \| 8 \|Blairsburg \| City \| 176
style="background-color:#FFFACD;" \| 9 \|Randall \| City \| 154

class="wikitable sortable"

Rank

!City/Town/etc.

!Municipal type

!Population (2020 Census)