20 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Center township | 1 | 16,718 | 15,585 | 1.36% | 282 | 59.27 | Township |
| Plymouth | 2 | 11,507 | 10,212 | 2.3% | 1,520 | 7.57 | City |
| Tippecanoe township | 3 | 9,904 | 9,544 | 0.7% | 207 | 47.88 | Township |
| German township | 4 | 8,588 | 8,928 | -1.04% | 140 | 61.48 | Township |
| Tippecanoe township | 5 | 6,520 | 6,573 | -0.37% | 215 | 30.32 | Township |
| Bremen | 6 | 4,546 | 4,690 | -0.63% | 1,604 | 2.83 | Town |
| North township | 7 | 3,946 | 4,054 | -0.75% | 94 | 41.78 | Township |
| West township | 8 | 3,747 | 3,851 | -0.77% | 89 | 41.99 | Township |
| Union township | 9 | 2,807 | 2,774 | 0.04% | 69 | 40.80 | Township |
| Walnut township | 10 | 2,785 | 2,885 | -0.96% | 74 | 37.70 | Township |
| Bourbon township | 11 | 2,750 | 2,863 | -1.08% | 55 | 49.62 | Township |
| Polk township | 12 | 2,690 | 2,778 | -0.85% | 64 | 42.09 | Township |
| Tippecanoe township | 13 | 2,451 | 2,413 | 0.16% | 90 | 27.21 | Township |
| Argos | 14 | 1,725 | 1,772 | -0.52% | 1,341 | 1.29 | Town |
| Bourbon | 15 | 1,652 | 1,704 | -0.6% | 1,435 | 1.15 | Town |
| Tippecanoe township | 16 | 1,269 | 1,315 | -0.94% | 35 | 35.75 | Township |
| Culver | 17 | 1,234 | 1,139 | 1.56% | 1,066 | 1.16 | Town |
| Tippecanoe township | 18 | 1,001 | 1,020 | -0.5% | 27 | 36.42 | Township |
| Green township | 19 | 1,000 | 1,038 | -0.99% | 30 | 33.13 | Township |
| La Paz | 20 | 457 | 472 | -0.65% | 1,178 | 0.39 | Town |
Center township is the largest city in Marshall County, with a population of 16,718.
La Paz is the smallest city in Marshall County.
There are 20 cities in Marshall County, Indiana.