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Hamilton County, IN
11 cities and towns and 12 ZIP codes in Hamilton County, Indiana.
Population
365,056
Land area
394sq mi
People per sq mi
926
ZIP codes
12
Cities and towns in Hamilton County
Hamilton County at a glance
- Hamilton County is about 4.8 times as dense as Indiana as a whole.
- It is the 4th most populous of 92 counties in Indiana.
- Households here earn a median of $121,530 a year, 69% more than the Indiana figure of $71,957.
- A typical owner-occupied home is valued at $405,500 (86% above Indiana) and median rent is $1,574 a month.
- The biggest population centers are Fishers (102,337), Carmel (101,651) and Noblesville (73,362).
Local data for Hamilton County, IN
Counts from official public data
- Hospitals6
- Emergency Rooms5
- Nursing Homes17
- Schools97
- Colleges6
- Libraries7
- Banks122
- Post Offices9
- Parks132
- Grocery Stores69
- Restaurants925
- Affordable Housing3
- Home Health Agencies9
- Hospice Care12
- Dialysis Centers5
- Rehab & Long-Term Care Hospitals2
- Community Health Centers3
- Mental Health & Addiction Treatment5
- Private Schools29
- Community Colleges & Trade Schools4
- Toxic Release Facilities13
- Historic Places17
Housing and community stats
Hamilton County, IN, American Community Survey 2020-2024
Median household income
$121,530
Poverty rate
4.4%
Median home value
$405,500
Prices +4.8% in a year
Median rent
$1,574/mo
Homeownership
76.1%
Bachelor's or higher
61.9%
Median age
38.4
Average commute
25.9 min
Largest reported origins and ancestries: German Americans (85,651), Irish Americans (41,728), Italian Americans (14,887).
Economy and federal money
Jobs, income, federal spending and pandemic loans
Unemployment rate
3.1%
Sep 2026, +0.2 pts in a year
Average annual pay
$72,332
167,841 jobs, 2025
Income per person
$104,283
BEA, 2024
Federal spending
$1.9B
FY 2026, $5,568 per person
PPP loans
$898M
10,497 loans, 103,678 jobs reported
Campaign donations
$25.1M
Itemized, 2026 cycle
How people get to work
Hamilton County, IN, workers 16 and older. American Community Survey 5-year estimates
- Drove alone68.9%
- Carpooled6.0%
- Public transit0.0%
- Walked0.8%
- Bicycle0.2%
- Taxi, ride-hailing, motorcycle or other0.8%
- Worked from home23.3%
Average one-way commute: 25.9 minutes for people who do not work from home.
Environment and hazard risk
Hamilton County, IN, from FEMA, NOAA and EPA
Natural hazard risk
Relatively Moderate
Top: tornado
Storm events since 1996
593
Most often thunderstorm wind
Flood insurance policies
523
0.4% of homes, county
July high / Jan low
84° / 19°F
44.4 inches of rain a year
Hazards, floods and storm historyCheck a flood zone17 historic places
Health statistics
Share of adults in Hamilton County, IN, CDC PLACES estimates
Obesity
32.5%
U.S. 33.3% -0.8 pts
Diabetes
9.6%
U.S. 12.1% -2.5 pts
Smoking
9.5%
U.S. 12.8% -3.3 pts
Uninsured (18-64)
5.2%
U.S. 11.1% -5.9 pts
Cities, towns and ZIP codes in Hamilton County
Population shown
Frequently asked questions
- What is the largest city in Hamilton County, IN?
- Fishers is the largest city or town in Hamilton County, with about 102,337 residents.
- How many ZIP codes are in Hamilton County?
- Hamilton County includes 12 ZIP Code Tabulation Areas, including 46030, 46031, 46032, 46033, 46034.
- What is the population of Hamilton County, IN?
- About 365,056 people live in Hamilton County, based on American Community Survey 5-year estimates.
- What counties border Hamilton County?
- Hamilton County borders Marion County, Madison County, Hancock County, Boone County, Clinton County, Tipton County.
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023