58 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Woodbury | 1 | 81,875 | 75,105 | 1.59% | 2,346 | 35 | City |
| Woodbury | 2 | 81,875 | 75,480 | 1.59% | 2,346 | 35 | City |
| Cottage Grove | 3 | 43,702 | 38,835 | 2.2% | 1,299 | 34 | City |
| Cottage Grove | 4 | 43,702 | 38,990 | 2.2% | 1,299 | 34 | City |
| Oakdale | 5 | 30,983 | 28,298 | 1.78% | 2,827 | 11 | City |
| Oakdale | 6 | 30,983 | 28,270 | 1.78% | 2,827 | 11 | City |
| Forest Lake | 7 | 20,699 | 20,612 | 0% | 678 | 31 | City |
| Forest Lake | 8 | 20,699 | 20,702 | 0% | 678 | 31 | City |
| Stillwater | 9 | 19,381 | 19,383 | -0.03% | 2,409 | 8 | City |
| Stillwater | 10 | 19,381 | 19,404 | -0.03% | 2,409 | 8 | City |
| Hugo | 11 | 17,004 | 15,757 | 1.43% | 508 | 33 | City |
| Hugo | 12 | 17,004 | 15,808 | 1.43% | 508 | 33 | City |
| Lake Elmo | 13 | 14,863 | 11,334 | 4.96% | 673 | 22 | City |
| Lake Elmo | 14 | 14,863 | 11,351 | 4.96% | 673 | 22 | City |
| Mahtomedi | 15 | 8,213 | 8,145 | 0.17% | 2,368 | 3 | City |
| Mahtomedi | 16 | 8,213 | 8,143 | 0.17% | 2,368 | 3 | City |
| Newport | 17 | 5,783 | 3,796 | 6.8% | 1,598 | 4 | City |
| Newport | 18 | 5,783 | 3,940 | 6.8% | 1,598 | 4 | City |
| St. Paul Park | 19 | 5,340 | 5,544 | -0.76% | 1,781 | 3 | City |
| St. Paul Park | 20 | 5,340 | 5,545 | -0.76% | 1,781 | 3 | City |
| Oak Park Heights | 21 | 4,631 | 4,847 | -0.92% | 1,583 | 3 | City |
| Oak Park Heights | 22 | 4,631 | 4,843 | -0.92% | 1,583 | 3 | City |
| Scandia | 23 | 3,942 | 3,988 | -0.23% | 113 | 35 | City |
| Scandia | 24 | 3,942 | 3,987 | -0.23% | 113 | 35 | City |
| West Lakeland | 25 | 3,925 | 3,977 | -0.05% | 318 | 12 | Township |
| West Lakeland | 26 | 3,925 | 3,979 | -0.05% | 318 | 12 | Township |
| Bayport | 27 | 3,723 | 4,017 | -1.64% | 2,148 | 2 | City |
| Bayport | 28 | 3,723 | 4,030 | -1.64% | 2,148 | 2 | City |
| Afton | 29 | 2,948 | 2,950 | -0.03% | 117 | 25 | City |
| Afton | 30 | 2,948 | 2,953 | -0.03% | 117 | 25 | City |
| May | 31 | 2,626 | 2,670 | 0.19% | 77 | 34 | Township |
| May | 32 | 2,626 | 2,670 | 0.19% | 77 | 34 | Township |
| Baytown | 33 | 2,223 | 2,095 | 1.65% | 275 | 8 | Township |
| Baytown | 34 | 2,223 | 2,099 | 1.65% | 275 | 8 | Township |
| Denmark | 35 | 1,891 | 1,803 | 0.11% | 66 | 28 | Township |
| Denmark | 36 | 1,891 | 1,812 | 0.11% | 66 | 28 | Township |
| Stillwater | 37 | 1,831 | 1,866 | 0.27% | 125 | 15 | Township |
| Stillwater | 38 | 1,831 | 1,867 | 0.27% | 125 | 15 | Township |
| Lakeland | 39 | 1,651 | 1,714 | -0.78% | 796 | 2 | City |
| Lakeland | 40 | 1,651 | 1,713 | -0.78% | 796 | 2 | City |
| Lake St. Croix Beach | 41 | 996 | 1,042 | -0.9% | 1,772 | 1 | City |
| Lake St. Croix Beach | 42 | 996 | 1,041 | -0.9% | 1,772 | 1 | City |
| Landfall | 43 | 842 | 846 | -0.12% | 12,758 | 0 | City |
| Landfall | 44 | 842 | 845 | -0.12% | 12,758 | 0 | City |
| Marine St. Croix | 45 | 656 | 664 | -0.3% | 168 | 4 | City |
| Marine St. Croix | 46 | 656 | 663 | -0.3% | 168 | 4 | City |
| Willernie | 47 | 510 | 520 | -0.39% | 4,080 | 0 | City |
| Willernie | 48 | 510 | 519 | -0.39% | 4,080 | 0 | City |
| Pine Springs | 49 | 382 | 391 | -0.52% | 496 | 1 | City |
| Pine Springs | 50 | 382 | 391 | -0.52% | 496 | 1 | City |
| St. Marys Point | 51 | 339 | 351 | -0.88% | 878 | 0 | City |
| St. Marys Point | 52 | 339 | 351 | -0.88% | 878 | 0 | City |
| Lakeland Shores | 53 | 327 | 341 | -0.91% | 1,035 | 0 | City |
| Lakeland Shores | 54 | 327 | 341 | -0.91% | 1,035 | 0 | City |
| Grey Cloud Island | 55 | 304 | 281 | 0% | 144 | 2 | Township |
| Grey Cloud Island | 56 | 304 | 281 | 0% | 144 | 2 | Township |
| Scandia | 57 | 68 | 66 | 3.03% | 2 | 36 | Township |
| Scandia | 58 | 68 | 66 | 3.03% | 2 | 36 | Township |
Woodbury is the largest city in Washington County, with a population of 81,875.
Scandia is the smallest city in Washington County, with a population of 68.
There are 58 cities in Washington County, Minnesota.