Boone County, Indiana
County seat: Lebanon · Population 80,689 (2025) · 423 sq mi
Boone County is the 23rd most populous of Indiana's 92 counties, with 80,689 people (2025 estimate). Its county seat is Lebanon. It is part of the Central (Region 5) region, one of the 12 Indiana economic growth regions (DWD / WorkOne regions). The map shows its 7 cities and towns and the 5 neighboring counties.
Boone County facts
- County seat
- Lebanon
- Population (2025 estimate)
- 80,689 +14% since 2020
- Land area
- 423 sq mi 28th largest of 92
- Water area
- 0 sq mi
- Population density
- 191 per sq mi
- Established
- 1830
- Named after
- Daniel Boone American pioneer and frontiersman (1734–1820)
- Largest city
- Zionsville 33,624
- Median household income
- $111,250
- Cities and towns
- 7 plus 1 CDPs
- ZIP codes
- 13
- Time zone
- Eastern
- FIPS code
- 18011
Cities and towns in Boone County
Boone County has 7 incorporated cities, towns and villages. Populations count the people living inside Boone County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Zionsville | Town | 33,624 | |
| Lebanon (county seat) | City | 17,913 | |
| Whitestown | Town | 15,767 | |
| Thorntown | Town | 1,426 | |
| Jamestown | Town | 938 | Hendricks County |
| Advance | Town | 500 | |
| Ulen | Town | 112 |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| Elizaville | 35 |
ZIP codes in Boone County
13 ZIP codes reach into Boone County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 46035 also Clinton and Montgomery counties
- 46050 also Clinton, Tipton and Hamilton counties
- 46052 also Hendricks County
- 46069 also Hamilton and Clinton counties
- 46071
- 46075
- 46077 also Hamilton and Marion counties
- 46102
- 46112 also Hendricks County
- 46147 also Hendricks County
- 46268 also Marion and Hamilton counties
- 47933 also Montgomery and Fountain counties
- 47968 also Montgomery and Hendricks counties
Population of Boone County, 2020–2025
Boone County grew by 9,903 people (+14%) between April 2020 and July 2025: 995 more births than deaths and a net gain of 8,939 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 71,113 |
| 2021 | 72,993 |
| 2022 | 74,377 |
| 2023 | 76,137 |
| 2024 | 78,640 |
| 2025 | 80,689 |
Neighboring counties
- Clinton County north · 33,322 people
- Hendricks County south · 193,510 people
- Montgomery County west · 38,954 people
- Hamilton County east · 387,036 people
- Marion County southeast · 992,196 people
Printable Boone County map
The PDF is a vector file with real text: it prints sharp on Letter paper and you can search it for a town. The PNG is 2400 pixels wide for slides and documents. Both are free to use with a credit to WhichCounty.
- PDF (Letter) (79 KB)
- PNG (2400 px) (55 KB)
Paste this code to embed the map on your site:
Sources
- Boundaries: U.S. Census Bureau, 2025 Cartographic Boundary Files (1:500,000).
- Population: Census Bureau county and city estimates, Vintage 2025. CDP populations: American Community Survey 2020–2024.
- Places and ZIP codes: Census Bureau 2026 Gazetteer and 2020 ZIP Code Tabulation Area relationship files.
- County seat, founding year and name origin: Wikidata (CC0), checked against state sources.
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