There are 21 cities in Lake County, South Dakota.
Note: As defined by the US Census Bureau, a city's official boundaries often extend miles beyond the city itself and may even cross county lines. As such, several thousand US cities officially exist in two or more counties (and therefore appear on multiple counties' lists of cities.)
City | Rank | 2024 Population | 2020 Population | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Madison | 1 | 6,068 | 6,159 | -0.38% | 1,315 | 4.6 | City |
| Dell Rapids | 2 | 3,825 | 3,995 | -1.11% | 1,697 | 2.3 | City |
| Volga | 3 | 2,416 | 2,111 | 3.25% | 2,112 | 1.1 | City |
| Salem | 4 | 1,336 | 1,331 | 0.07% | 1,069 | 1.3 | City |
| Arlington | 5 | 930 | 920 | 0.22% | 541 | 1.7 | City |
| Lake Madison | 6 | 878 | 811 | 1.62% | 186 | 4.7 | CDP |
| Colton | 7 | 688 | 736 | -1.71% | 981 | 0.7 | City |
| Colman | 8 | 661 | 633 | 1.07% | 351 | 1.9 | City |
| Lake Poinsett | 9 | 429 | 480 | -0.92% | 88 | 4.9 | CDP |
| Brant Lake South | 10 | 260 | 290 | 7.44% | 495 | 0.5 | CDP |
| Chester | 11 | 233 | 285 | -0.85% | 286 | 0.8 | CDP |
| Wentworth | 12 | 172 | 180 | -1.15% | 677 | 0.3 | Village |
| Ramona | 13 | 163 | 161 | 0% | 595 | 0.3 | Town |
| Golden View Colony | 14 | 125 | 102 | 7.76% | 130 | 1.0 | CDP |
| Oldham | 15 | 118 | 121 | -0.84% | 480 | 0.2 | City |
| Brant Lake | 16 | 55 | 57 | -1.79% | 355 | 0.2 | City |
| Winfred | 17 | 54 | 68 | 8% | 54 | 1.0 | CDP |
| Spring Lake Colony | 18 | 48 | 0 | 9.09% | 168 | 0.3 | CDP |
| Nunda | 19 | 47 | 47 | 0% | 47 | 1.0 | Town |
| Shannon Colony | 20 | 32 | 27 | 10.35% | 127 | 0.3 | CDP |
| Hetland | 21 | 18 | 18 | 0% | 158 | 0.1 | Town |
Note: City markers shown outside the county boundary mean that a part of the city extends into this county, but is primarily located in an adjacent county.
Madison is the largest city in Lake County.
Hetland is the smallest city in Lake County.
There are 21 cities in Lake County, South Dakota.