16 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Crestview | 1 | 30,454 | 27,569 | 1.93% | 1,742 | 17.48 | City |
| Wright | 2 | 27,058 | 24,671 | 0.98% | 4,940 | 5.48 | CDP |
| Fort Walton Beach | 3 | 20,915 | 20,939 | -0.02% | 2,730 | 7.66 | City |
| Niceville | 4 | 16,928 | 15,832 | 1.31% | 1,175 | 14.41 | City |
| Destin | 5 | 14,354 | 13,938 | 0.58% | 1,916 | 7.49 | City |
| Lake Lorraine | 6 | 7,202 | 7,495 | 0.17% | 3,496 | 2.06 | CDP |
| Ocean City | 7 | 6,248 | 5,969 | 0.76% | 4,021 | 1.55 | CDP |
| Valparaiso | 8 | 5,203 | 4,767 | 1.7% | 443 | 11.74 | City |
| Mary Esther | 9 | 4,148 | 3,988 | 0.78% | 2,851 | 1.46 | City |
| Hurlburt Field | 10 | 3,475 | 2,478 | 7.15% | 345 | 10.09 | CDP |
| Eglin AFB | 11 | 2,880 | 2,448 | 1.41% | 951 | 3.03 | CDP |
| Harold | 12 | 873 | 1,070 | 0.34% | 59 | 14.72 | CDP |
| Shalimar | 13 | 772 | 741 | 0.78% | 2,690 | 0.29 | Town |
| Laurel Hill | 14 | 620 | 590 | 0.98% | 147 | 4.21 | City |
| Cinco Bayou | 15 | 478 | 455 | 1.06% | 2,747 | 0.17 | Town |
| Munson | 16 | 394 | 301 | 0.25% | 16 | 25.18 | CDP |
Crestview is the largest city in Okaloosa County, with a population of 30,454.
Munson is the smallest city in Okaloosa County.
There are 16 cities in Okaloosa County, Florida.