LaPorte County, IN ZIP codes
There are 14 ZIP codes in LaPorte County, IN, in 12 towns, from 46340 to 46574. The largest are 46350 (La Porte), 46360 (Michigan City) and 46574 (Walkerton).
The county seat is La Porte.
- ZIP codes
- 14
- Towns
- 12
- County seat
- La Porte
- County FIPS
18091- State
- Indiana
- Population
- 111,917
- Median household income
- $71,055
- Land area
- 598 sq mi
- Area code
- 219
- Metro area
- Michigan City-La Porte
LaPorte County ZIP codes by town
Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.
Map of LaPorte County ZIP codes
The ZIP codes of LaPorte County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.
LaPorte County in numbers
About 111,917 people live in LaPorte County, in 43,633 households, the 16th most populous of Indiana's 92 counties. The median household income is $71,055 a year, about the same as the Indiana median of $71,957 (US: $80,734). The median owner-occupied home is valued at $195,500 (10% below the Indiana median), and median gross rent is $976 a month. The median age is 41.1; 22.7% of adults 25 and over hold a bachelor's degree or higher (29.5% across Indiana); the average commute takes 25 minutes.
| Population | 111,917 |
|---|---|
| Households | 43,633 |
| Median age | 41.1 |
| Median household income | $71,055 |
| Median home value | $195,500 |
| Median gross rent | $976 |
| Bachelor's degree or higher | 22.7% |
| Mean commute | 25.0 min |
| Population density | 187 / sq mi |
U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.
Largest towns in LaPorte County
| Town | ZIP codes | Population |
|---|---|---|
| Michigan City | 2 | 31,814 |
| La Porte | 2 | 22,449 |
| Westville | 1 | 5,279 |
| Walkerton | 1 | 2,115 |
| Kingsford Heights | 1 | 1,358 |
| Wanatah | 1 | 1,178 |
| Mill Creek | 1 | 992 |
| La Crosse | 1 | 651 |
| Hanna | 1 | 529 |
| Rolling Prairie | 1 | 238 |
| Union Mills | 1 | 233 |
| Kingsbury | 1 | 210 |
Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.
Neighbouring counties
Counties that share a ZIP code with LaPorte County.
Not sure you are in LaPorte County? What county am I in? answers from your location, near a county line included.
Every ZIP code in LaPorte County, with figures
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
46340 | Hanna , IN | Standard | 1,524 | $58,717 | $172,000 |
46345 | Kingsbury , IN | Standard | 66 | — | $185,900 |
46346 | Kingsford Heights , IN | Standard | 1,358 | $57,830 | $120,500 |
46348 | La Crosse , IN | Standard | 1,217 | $64,375 | $168,800 |
46350 | La Porte , IN | Standard | 44,763 | $74,307 | $212,600 |
46352 | La Porte , IN | No street area | — | — | — |
46360 | Michigan City , IN | Standard | 43,817 | $59,266 | $167,300 |
46361 | Michigan City , IN | No street area | — | — | — |
46365 | Mill Creek , IN | Standard | 992 | $98,047 | $217,400 |
46371 | Rolling Prairie , IN | Standard | 3,396 | $99,830 | $256,000 |
46382 | Union Mills , IN | Standard | 1,835 | $95,208 | $214,400 |
46390 | Wanatah , IN | Standard | 2,554 | $87,639 | $228,000 |
46391 | Westville , IN | Standard | 8,986 | $82,692 | $253,500 |
46574 | Walkerton , IN | Standard | 7,426 | $76,181 | $188,100 |
Cite this page
zipcodes.pro. “LaPorte County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/in/county/laporte
Underlying data is public domain or openly licensed — sources, vintages and licences.