4 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Cambridge | 1 | 11,059 | 9,683 | 2.55% | 1,478 | 7.48 | City |
| Isanti | 2 | 7,694 | 6,883 | 2.15% | 1,511 | 5.09 | City |
| Braham | 3 | 1,790 | 1,797 | -0.06% | 1,102 | 1.63 | City |
| Stanchfield | 4 | 88 | 73 | -2.22% | 119 | 0.74 | CDP |
Cambridge is the largest city in Isanti County, with a population of 11,059.
Stanchfield is the smallest city in Isanti County.
There are 4 cities in Isanti County, Minnesota.