27 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Madison | 1 | 1,475 | 1,513 | -0.41% | 1,405 | 1 | City |
| Dawson | 2 | 1,417 | 1,458 | -0.49% | 985 | 1 | City |
| Camp Release | 3 | 301 | 302 | -0.33% | 10 | 29 | Township |
| Riverside | 4 | 272 | 276 | -0.73% | 8 | 35 | Township |
| Madison | 5 | 207 | 211 | -0.96% | 6 | 35 | Township |
| Lac qui Parle | 6 | 190 | 187 | 0.53% | 7 | 29 | Township |
| Cerro Gordo | 7 | 180 | 181 | -0.55% | 5 | 36 | Township |
| Lake Shore | 8 | 166 | 167 | -0.6% | 3 | 52 | Township |
| Providence | 9 | 162 | 159 | 0.62% | 4 | 36 | Township |
| Maxwell | 10 | 155 | 156 | -0.64% | 4 | 36 | Township |
| Ten Mile Lake | 11 | 151 | 148 | 0.67% | 4 | 35 | Township |
| Hamlin | 12 | 148 | 145 | 0.68% | 4 | 36 | Township |
| Bellingham | 13 | 139 | 145 | -0.71% | 359 | 0 | City |
| Boyd | 14 | 138 | 143 | -0.72% | 270 | 1 | City |
| Yellow Bank | 15 | 133 | 135 | -0.75% | 4 | 35 | Township |
| Walter | 16 | 130 | 134 | -0.76% | 4 | 29 | Township |
| Arena | 17 | 120 | 124 | -0.83% | 3 | 37 | Township |
| Marietta | 18 | 114 | 119 | -0.87% | 311 | 0 | City |
| Hantho | 19 | 103 | 98 | 1.98% | 3 | 30 | Township |
| Augusta | 20 | 96 | 96 | 0% | 3 | 29 | Township |
| Agassiz | 21 | 86 | 89 | -1.15% | 2 | 35 | Township |
| Freeland | 22 | 86 | 89 | -1.15% | 2 | 36 | Township |
| Perry | 23 | 86 | 89 | -1.15% | 2 | 37 | Township |
| Manfred | 24 | 77 | 80 | -1.28% | 2 | 33 | Township |
| Nassau | 25 | 65 | 67 | 0% | 409 | 0 | City |
| Mehurin | 26 | 64 | 67 | -1.54% | 2 | 29 | Township |
| Louisburg | 27 | 29 | 29 | 0% | 114 | 0 | 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, with a population of 29.
There are 27 cities in Lac qui Parle County, Minnesota.