Note: As defined by the US Census Bureau, a city's official boundaries often extend miles beyond the city itself and may even cross county lines. As such, several thousand US cities officially exist in two or more counties (and therefore appear on multiple counties' lists of cities.)
City | Rank | 2024 Pop. | 2020 Pop. | Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Michigan City | 1 | 31,542 | 32,010 | -0.37% | 1,546 | 20.4 | City |
| La Porte | 2 | 22,510 | 22,413 | 0.11% | 1,830 | 12.3 | City |
| Westville | 3 | 5,265 | 5,275 | -0.06% | 1,620 | 3.3 | Town |
| Trail Creek | 4 | 2,016 | 2,059 | -0.54% | 1,657 | 1.2 | Town |
| Hudson Lake | 5 | 1,382 | 1,285 | 0.44% | 718 | 1.9 | CDP |
| Koontz Lake | 6 | 1,332 | 1,368 | -1.19% | 378 | 3.5 | CDP |
| Kingsford Heights | 7 | 1,323 | 1,331 | -0.15% | 1,490 | 0.9 | Town |
| Long Beach | 8 | 1,169 | 1,187 | -0.43% | 1,122 | 1.0 | Town |
| Wanatah | 9 | 983 | 1,003 | -0.51% | 703 | 1.4 | Town |
| Fish Lake | 10 | 743 | 1,335 | -2.49% | 482 | 1.5 | CDP |
| La Crosse | 11 | 559 | 575 | -0.71% | 982 | 0.6 | Town |
| Hanna | 12 | 547 | 198 | 1.11% | 559 | 1.0 | CDP |
| Michiana Shores | 13 | 299 | 306 | -0.66% | 859 | 0.3 | Town |
| Pottawattamie Park | 14 | 233 | 241 | -0.85% | 947 | 0.2 | Town |
| Kingsbury | 15 | 187 | 191 | -0.53% | 315 | 0.6 | Town |
| Union Mills | 16 | 136 | 0 | 7.09% | 224 | 0.6 | CDP |
| Rolling Prairie | 17 | 90 | 408 | -28% | 85 | 1.1 | CDP |
Note: City markers shown outside the county boundary mean that a part of the city extends into this county, but is primarily located in an adjacent county.
Michigan City is the largest city in LaPorte County.
Rolling Prairie is the smallest city in LaPorte County.
There are 17 cities in LaPorte County, Indiana.