Hamilton County GIS Maps
Hamilton County, Indiana, has 347,467 residents and covers 394.3 square miles. The population grew 26.6% between the 2010 and 2020 census. More residents moved in than left over that decade. The FIPS code for Hamilton County is 18057.
Carmel is the county's largest population center. Hamilton County also includes 13 zip codes, 6 public school districts and 23 municipalities. Those boundaries help explain why population, schools, and housing can look different from one part of the county to another. The map below shows how those county lines, zip codes, and school districts fit together, and the sections that follow use that same geography to show population, demographics, school enrollment and housing patterns in more detail.
Maps, GIS layers and sample data. Paid packages add full layers, analytics and database files.
Hamilton County Trends
- Population
- 347,467▴
- Median Home Value
- $379,100▴
- K-12 Enrollment
- 61,363▴
County analytics dashboards with historical trends & projections included in package downloads.
Free starter access previews county maps, lightweight GIS, and sample data. Paid packages unlock full GIS layers, analytics, and database files.
Hamilton County Maps
The maps below show a few of the county map styles included in our downloads. County packages include map exports in JPEG, PNG, SVG, PDF and GeoTIFF formats plus more than 20 GIS layers for mapping, research and analysis. Available layers include zip codes, area codes, subdivisions, school districts, political boundaries, roads, water features, points of interest and more.
County packages also include historical county demographics, business intelligence, analytical dashboards, AI-ready prompts, markdown files and related reference data. Everything is organized to save hours of manual work collecting current data, cleaning it and joining it together. That makes it easier to move faster on analytics, due diligence, business planning and location research. Paid packages are built for commercial use, but some package contents include source-specific attribution or notice guidance. Review Licensing & Data Source Notices.
Hamilton County Population
Hamilton County had 347,467 residents in 2020. That was 26.6% higher than in 2010. Hamilton County added 164,727 people between 2000 and 2020, which points to steady long-term growth. The county is fairly spread out, with about 881 people per square mile. Some of the county's most populated postal areas include Carmel, Fishers and Noblesville.
Population Trend in Hamilton County IN
Hamilton County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
Hamilton County Zip Codes
Hamilton County has 13 zip codes. Some of the county's most populated zip codes include Carmel (46032), Fishers (46037) and Noblesville (46060). Carmel is the largest zip by population, with about 50,477 residents or 15% of the county total. Together, the three largest zips account for about 41% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in Hamilton County IN
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 46032 | Carmel | 50,477 | ▴ 19.5% |
| 46037 | Fishers | 47,264 | ▴ 31.7% |
| 46060 | Noblesville | 45,073 | ▴ 29.9% |
| 46038 | Fishers | 42,694 | ▴ 13.2% |
| 46074 | Westfield | 42,598 | ▴ 59.3% |
| Download all zip code data | |||
Hamilton County Zip Code populations and trends per most recent census data.
Hamilton County Demographics
Hamilton County has a median age of 38, which is close to the Indiana average. About 25.9% of residents are under 18, while 13.4% are 65 or older. That gives the county a fairly even mix of younger families and older adults. The largest age group is 25 to 44 at about 34% of the population, which points to a solid working-age base. About 61.8% of adults have a bachelor's degree or higher, above the statewide figure of 28.8%. The county is mostly White by population, though Hispanic, Asian, Black and multiracial residents are also part of the local mix.
Key Demographics for Hamilton County IN
Median Age
38
Under 18
25.9%
Age 65+
13.4%
Bachelor's+
61.8%
Hamilton County School Districts
Hamilton County is served by 6 public school districts with 61,363 students enrolled in 2024. The largest districts on the county map are Hamilton Southeastern Schools, Carmel Clay Schools and Noblesville Schools. Those three districts account for about 78% of public school enrollment in the map area. Total enrollment has stayed fairly steady in recent years, based on district totals from 2017 to 2024.
Largest School Districts by Enrollment in Hamilton County IN
| District | Enrollment | Share | Trend |
|---|---|---|---|
| Hamilton Southeastern Schools | 21,062 | 34.3% | ▾ -1.1% |
| Carmel Clay Schools | 16,145 | 26.3% | ▴ 0.2% |
| Noblesville Schools | 10,522 | 17.1% | ▾ -0.5% |
| Westfield-Washington Schools | 10,124 | 16.5% | ▴ 4.4% |
| Hamilton Heights School Corporation | 2,341 | 3.8% | ▴ 0.2% |
| Download all school district data | |||
Hamilton County school district enrollment and trends per most recent NCES reporting data.
Hamilton County Housing & Real Estate
Hamilton County has a median home value of $379,100 and a median gross rent of $1,468. About 76% of occupied homes in the county are owner-occupied, so the local housing market leans heavily toward ownership. Home values run above the Indiana median, while rents come in above the state average. In March 2026, the median listing price was $479,875 and homes spent about 38 days on the market.
Hamilton County Housing Mix
Hamilton County housing mix: owner, renter and vacant units.
Hamilton County Housing Trends
Hamilton County median home value and rent trend (last 5 years).
Businesses in Hamilton County, IN
Hamilton County has 14,641 business listings across 950 categories. The largest categories in Hamilton County business listings are Real Estate Agents (367, 2.5%), Medical Offices (279, 1.9%), and Insurance Agencies (246, 1.7%). The full Hamilton County business listings dataset includes names, categories, addresses and contact details where available. Hamilton County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in Hamilton County, IN
| Category | Businesses | Share |
|---|---|---|
| Real Estate Agents | 367 | 2.5% |
| Medical Offices | 279 | 1.9% |
| Insurance Agencies | 246 | 1.7% |
| Churches & Religious Organizations | 231 | 1.6% |
| Professional Services | 203 | 1.4% |
| Hair Salons | 192 | 1.3% |
| Gyms & Fitness | 190 | 1.3% |
| Beauty Salons | 187 | 1.3% |
| Contractors | 177 | 1.2% |
| Financial Service | 153 | 1.0% |
Hamilton County Business Listings
| Business | Category | City |
|---|---|---|
| Emerald Neuro-Recover | Abuse And Addiction Treatment | Carmel |
| Clean Juice | Acai Bowls | Fishers |
| The Olivia on Main | Accommodation | Carmel |
| Edgewater CPA Group | Accountant | Carmel |
| Sagamore Golf Club and Community Golf Club | Active Life | Noblesville |
| Yang Health Center | Acupuncture | Indianapolis |
| Drug Rehab Fishers | Addiction Rehabilitation Center | Fishers |
| Kirsh & Kirsh | Adoption Services | Carmel |
| Project Management Academy Indianapolis | Adult Education | Indianapolis |
| Outdoor Cover Warehouse | Adventure Sports Center | Carmel |
| Download Hamilton County business listings | ||
Hamilton County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
Hamilton County Basemaps
Hamilton County map and data packages include a set of useful basemaps to help you get started quickly. These include a custom light grey canvas, USGS topo, imagery and other reference layers that make it easier to build clear, meaningful county maps using the included GIS layers, your own data or both. Pre-rendered map tiles for the light grey basemap are included so you can use them offline or host them on your own CDN.
Get the Full Hamilton County Data Package
This page shows a preview of what's included in the Hamilton County data package. The full package gives you a ready-to-use county data system with GIS layers, historical data, maps, database files and planning tools that save hours of manual data gathering, cleanup and joins. Everything is organized to help you skip data wrangling and start analysis faster.
- 20+ GIS layers for zip codes, school districts, roads, water, boundaries and more
- Historical county demographics, housing, income and trend data
- ZIP code population files and school district enrollment history
- Database files, markdowns, AI-ready prompts and documentation
- Map exports in PNG, JPEG, PDF, SVG and GeoTIFF formats
- Offline-ready data explorer, map and analytics tools
Paid packages support commercial use, client work, and derived outputs. Some package contents may include source-specific attribution or provider notices. See Licensing & Data Source Notices.
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Preview a Live Package Demo
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Nearby Counties
Browse county data pages for the counties that border Hamilton County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.