27 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Madison | 1 | 1,475 | 1,514 | -0.54% | 1,405 | 1.05 | City |
| Dawson | 2 | 1,417 | 1,456 | -0.56% | 985 | 1.44 | City |
| Camp Release township | 3 | 299 | 302 | -0.33% | 10 | 29.36 | Township |
| Riverside township | 4 | 281 | 277 | 0.36% | 8 | 34.60 | Township |
| Madison township | 5 | 204 | 206 | -0.49% | 6 | 34.77 | Township |
| Lac qui Parle township | 6 | 183 | 187 | -0.54% | 6 | 28.67 | Township |
| Cerro Gordo township | 7 | 177 | 181 | -0.56% | 5 | 35.94 | Township |
| Lake Shore township | 8 | 163 | 168 | -1.21% | 3 | 51.67 | Township |
| Providence township | 9 | 158 | 159 | -0.63% | 4 | 36.03 | Township |
| Maxwell township | 10 | 157 | 156 | 0% | 4 | 36.32 | Township |
| Ten Mile Lake township | 11 | 146 | 147 | 0% | 4 | 35.23 | Township |
| Hamlin township | 12 | 145 | 146 | 0% | 4 | 35.87 | Township |
| Bellingham | 13 | 142 | 144 | 0% | 367 | 0.39 | City |
| Boyd | 14 | 138 | 143 | -0.72% | 270 | 0.51 | City |
| Yellow Bank township | 15 | 134 | 134 | 0% | 4 | 35.21 | Township |
| Walter township | 16 | 129 | 133 | -0.77% | 4 | 28.99 | Township |
| Arena township | 17 | 121 | 125 | -0.82% | 3 | 36.69 | Township |
| Marietta | 18 | 114 | 119 | -0.87% | 311 | 0.37 | City |
| Hantho township | 19 | 96 | 97 | 0% | 3 | 30.24 | Township |
| Augusta township | 20 | 95 | 96 | 0% | 3 | 28.55 | Township |
| Agassiz township | 21 | 93 | 88 | 2.2% | 3 | 34.50 | Township |
| Freeland township | 22 | 88 | 89 | 0% | 2 | 36.42 | Township |
| Perry township | 23 | 88 | 89 | 0% | 2 | 36.82 | Township |
| Manfred township | 24 | 81 | 82 | 0% | 2 | 33.17 | Township |
| Mehurin township | 25 | 67 | 68 | 0% | 2 | 28.69 | Township |
| Nassau | 26 | 65 | 67 | 0% | 409 | 0.16 | City |
| Louisburg | 27 | 30 | 32 | 0% | 118 | 0.25 | City |
Madison is the largest city in Lac qui Parle County, with a population of 1,475.
Louisburg is the smallest city in Lac qui Parle County.
There are 27 cities in Lac qui Parle County, Minnesota.