Porter County, Indiana
County seat: Valparaiso · Population 176,049 (2025) · 418 sq mi
Porter County is the 10th most populous of Indiana's 92 counties, with 176,049 people (2025 estimate). Its county seat is Valparaiso. It is part of the Northwest (Region 1) region, one of the 12 Indiana economic growth regions (DWD / WorkOne regions). The map shows its 11 cities and towns and the 6 neighboring counties.
Porter County facts
- County seat
- Valparaiso
- Population (2025 estimate)
- 176,049 +1.6% since 2020
- Land area
- 418 sq mi 29th largest of 92
- Water area
- 104 sq mi
- Population density
- 421 per sq mi
- Established
- 1835
- Named after
- David Porter officer in the United States Navy (1780–1843)
- Largest city
- Portage 38,634
- Median household income
- $87,972
- Cities and towns
- 11 plus 9 CDPs
- ZIP codes
- 16
- Time zone
- Central
- FIPS code
- 18127
Cities and towns in Porter County
Porter County has 11 incorporated cities, towns and villages. Populations count the people living inside Porter County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Portage | City | 38,634 | |
| Valparaiso (county seat) | City | 35,177 | |
| Chesterton | Town | 14,635 | |
| Porter | Town | 5,167 | |
| Hebron | Town | 3,775 | |
| Burns Harbor | Town | 2,146 | |
| Kouts | Town | 2,048 | |
| Ogden Dunes | Town | 1,163 | |
| Beverly Shores | Town | 601 | |
| Town of Pines | Town | 590 | |
| Dune Acres | Town | 230 |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| South Haven | 7,241 | |
| Lakes of the Four Seasons | 3,450 | Lake County |
| Shorewood Forest | 3,263 | |
| Salt Creek Commons | 1,843 | |
| Aberdeen | 1,490 | |
| Lake Eliza | 545 | |
| Wheeler | 283 | |
| Malden | 137 | |
| Boone Grove | 30 |
ZIP codes in Porter County
16 ZIP codes reach into Porter County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 46301
- 46302
- 46304
- 46307 also Lake County
- 46341 also Lake and Jasper counties
- 46342 also Lake County
- 46347
- 46348 also LaPorte County
- 46360 also LaPorte County
- 46368
- 46383
- 46385
- 46390 also LaPorte County
- 46391 also LaPorte County
- 46393
- 46403 also Lake County
Population of Porter County, 2020–2025
Porter County grew by 2,827 people (+1.6%) between April 2020 and July 2025: 1,446 more deaths than births and a net gain of 4,285 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 173,319 |
| 2021 | 174,457 |
| 2022 | 174,767 |
| 2023 | 174,845 |
| 2024 | 175,420 |
| 2025 | 176,049 |
Neighboring counties
- LaPorte County east · 111,294 people
- Lake County west · 504,612 people
- Jasper County south · 33,894 people
- Berrien County, Michigan northeast · 152,444 people
- Cook County, Illinois northwest · 5,194,625 people
- Starke County southeast · 23,425 people
Printable Porter 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) (116 KB)
- PNG (2400 px) (95 KB)
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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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