9 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| New Ulm | 1 | 13,789 | 14,129 | -0.49% | 1,356 | 10.17 | City |
| Sleepy Eye | 2 | 3,506 | 3,445 | 0.34% | 1,874 | 1.87 | City |
| Springfield | 3 | 1,967 | 2,029 | -0.61% | 1,048 | 1.88 | City |
| Hanska | 4 | 378 | 383 | -0.26% | 1,530 | 0.25 | City |
| Comfrey | 5 | 369 | 383 | -0.81% | 862 | 0.43 | City |
| Searles | 6 | 314 | 288 | 3.29% | 717 | 0.44 | CDP |
| Essig | 7 | 75 | 56 | 7.14% | 116 | 0.65 | CDP |
| Evan | 8 | 70 | 72 | 0% | 68 | 1.03 | City |
| Cobden | 9 | 36 | 38 | 0% | 36 | 0.99 | City |
New Ulm is the largest city in Brown County, with a population of 13,789.
Cobden is the smallest city in Brown County.
There are 9 cities in Brown County, Minnesota.