20 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Center | 1 | 16,398 | 15,587 | 0.43% | 277 | 59 | Township |
| Plymouth | 2 | 11,249 | 10,214 | 1.87% | 1,486 | 8 | City |
| Tippecanoe | 3 | 10,000 | 9,547 | 0.69% | 209 | 48 | Township |
| German | 4 | 8,784 | 8,928 | 0.11% | 143 | 61 | Township |
| Tippecanoe | 5 | 6,619 | 6,574 | 0.38% | 218 | 30 | Township |
| Bremen | 6 | 4,581 | 4,689 | -0.48% | 1,616 | 3 | Town |
| North | 7 | 4,012 | 4,055 | 0.22% | 96 | 42 | Township |
| West | 8 | 3,814 | 3,846 | 0.24% | 91 | 42 | Township |
| Union | 9 | 2,875 | 2,782 | 1.05% | 70 | 41 | Township |
| Walnut | 10 | 2,851 | 2,881 | 0.14% | 76 | 38 | Township |
| Bourbon | 11 | 2,811 | 2,863 | 0.04% | 57 | 50 | Township |
| Polk | 12 | 2,746 | 2,776 | 0.22% | 65 | 42 | Township |
| Tippecanoe | 13 | 2,501 | 2,413 | 1.09% | 92 | 27 | Township |
| Argos | 14 | 1,744 | 1,772 | -0.34% | 1,356 | 1 | Town |
| Bourbon | 15 | 1,663 | 1,703 | -0.48% | 1,445 | 1 | Town |
| Tippecanoe | 16 | 1,290 | 1,315 | 0.08% | 36 | 36 | Township |
| Culver | 17 | 1,240 | 1,137 | 1.64% | 1,071 | 1 | Town |
| Green | 18 | 1,024 | 1,040 | 0% | 31 | 33 | Township |
| Tippecanoe | 19 | 1,016 | 1,015 | 0.1% | 28 | 36 | Township |
| La Paz | 20 | 460 | 473 | -0.65% | 1,186 | 0 | Town |
Center is the largest city in Marshall County, with a population of 16,398.
La Paz is the smallest city in Marshall County, with a population of 460.
There are 20 cities in Marshall County, Indiana.