20 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Center | 1 | 16,469 | 15,587 | 0.43% | 278 | 59 | Township |
| Plymouth | 2 | 11,456 | 10,214 | 1.84% | 1,513 | 8 | City |
| Tippecanoe | 3 | 10,069 | 9,547 | 0.69% | 210 | 48 | Township |
| German | 4 | 8,794 | 8,928 | 0.11% | 143 | 61 | Township |
| Tippecanoe | 5 | 6,644 | 6,574 | 0.38% | 219 | 30 | Township |
| Bremen | 6 | 4,560 | 4,689 | -0.46% | 1,609 | 3 | Town |
| North | 7 | 4,021 | 4,055 | 0.22% | 96 | 42 | Township |
| West | 8 | 3,823 | 3,846 | 0.24% | 91 | 42 | Township |
| Union | 9 | 2,905 | 2,782 | 1.04% | 71 | 41 | Township |
| Walnut | 10 | 2,855 | 2,881 | 0.14% | 76 | 38 | Township |
| Bourbon | 11 | 2,812 | 2,863 | 0.04% | 57 | 50 | Township |
| Polk | 12 | 2,752 | 2,776 | 0.22% | 65 | 42 | Township |
| Tippecanoe | 13 | 2,528 | 2,413 | 1.08% | 93 | 27 | Township |
| Argos | 14 | 1,739 | 1,772 | -0.29% | 1,352 | 1 | Town |
| Bourbon | 15 | 1,655 | 1,703 | -0.48% | 1,438 | 1 | Town |
| Tippecanoe | 16 | 1,291 | 1,315 | 0.08% | 36 | 36 | Township |
| Culver | 17 | 1,261 | 1,137 | 1.69% | 1,089 | 1 | Town |
| Green | 18 | 1,024 | 1,040 | 0% | 31 | 33 | Township |
| Tippecanoe | 19 | 1,017 | 1,015 | 0.1% | 28 | 36 | Township |
| La Paz | 20 | 458 | 473 | -0.43% | 1,180 | 0 | Town |
Center is the largest city in Marshall County, with a population of 16,469.
La Paz is the smallest city in Marshall County, with a population of 458.
There are 20 cities in Marshall County, Indiana.