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Hamilton County, IA
9 cities and towns and 9 ZIP codes in Hamilton County, Iowa.
Population
14,886
Land area
577sq mi
People per sq mi
26
ZIP codes
9
Cities and towns in Hamilton County
Hamilton County at a glance
- Hamilton County is 55% less dense than Iowa as a whole.
- The median household income is $72,432, 3% below the Iowa median of $75,059.
- A typical owner-occupied home is valued at $156,400 (25% below Iowa) and median rent is $877 a month.
- Its largest cities are Webster City (7,769), Jewell Junction (1,084) and Stratford (735).
Local data for Hamilton County, IA
Counts from official public data
Housing and community stats
Hamilton County, IA, American Community Survey 2020-2024
Median household income
$72,432
Poverty rate
7.4%
Median home value
$156,400
Prices +11.4% in a year
Median rent
$877/mo
Homeownership
73.4%
Bachelor's or higher
22.8%
Median age
41.7
Average commute
21.4 min
Largest reported origins and ancestries: German Americans (4,433), Norwegian Americans (1,794), Mexican Americans (1,151).
Economy and federal money
Jobs, income, federal spending and pandemic loans
Unemployment rate
2.5%
Sep 2026, +0.3 pts in a year
Average annual pay
$53,887
5,703 jobs, 2025
Income per person
$65,171
BEA, 2024
Federal spending
$115M
FY 2026, $7,650 per person
PPP loans
$36.2M
889 loans, 3,823 jobs reported
Campaign donations
$52.1K
Itemized, 2026 cycle
How people get to work
Hamilton County, IA, workers 16 and older. American Community Survey 5-year estimates
- Drove alone84.0%
- Carpooled6.6%
- Public transit0.1%
- Walked2.6%
- Bicycle0.2%
- Taxi, ride-hailing, motorcycle or other0.3%
- Worked from home6.1%
Average one-way commute: 21.4 minutes for people who do not work from home.
Environment and hazard risk
Hamilton County, IA, from FEMA, NOAA and EPA
Natural hazard risk
Relatively Low
Top: drought
Storm events since 1996
610
Most often hail
Flood insurance policies
6
0.1% of homes, county
July high / Jan low
83° / 7°F
37.2 inches of rain a year
Hazards, floods and storm historyCheck a flood zone8 historic places
Health statistics
Share of adults in Hamilton County, IA, CDC PLACES estimates
Obesity
36.5%
U.S. 33.3% +3.2 pts
Diabetes
12.1%
U.S. 12.1% about the same
Smoking
14.7%
U.S. 12.8% +1.9 pts
Uninsured (18-64)
7.5%
U.S. 11.1% -3.6 pts
Cities, towns and ZIP codes in Hamilton County
Population shown
Frequently asked questions
- What is the largest city in Hamilton County, IA?
- Webster City is the largest city or town in Hamilton County, with about 7,769 residents.
- How many ZIP codes are in Hamilton County?
- Hamilton County includes 9 ZIP Code Tabulation Areas, including 50034, 50075, 50130, 50132, 50231.
- What is the population of Hamilton County, IA?
- About 14,886 people live in Hamilton County, based on American Community Survey 5-year estimates.
- What counties border Hamilton County?
- Hamilton County borders Story County, Webster County, Boone County, Hardin County, Wright County, Franklin County.
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023