25 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Crestview | 1 | 31,525 | 27,426 | 2.6% | 1,803 | 17 | City |
| Crestview | 2 | 31,525 | 27,533 | 2.6% | 1,803 | 17 | City |
| Wright | 3 | 27,058 | 24,671 | 0.98% | 4,940 | 5 | CDP |
| Fort Walton Beach | 4 | 21,252 | 20,923 | 0.3% | 2,774 | 8 | City |
| Fort Walton Beach | 5 | 21,252 | 20,930 | 0.3% | 2,774 | 8 | City |
| Niceville | 6 | 18,434 | 15,797 | 2.87% | 1,279 | 14 | City |
| Niceville | 7 | 18,434 | 15,859 | 2.87% | 1,279 | 14 | City |
| Destin | 8 | 14,004 | 13,932 | 0.09% | 1,869 | 7 | City |
| Destin | 9 | 14,004 | 13,938 | 0.09% | 1,869 | 7 | City |
| Lake Lorraine | 10 | 7,202 | 7,495 | 0.17% | 3,496 | 2 | CDP |
| Ocean City | 11 | 6,248 | 5,969 | 0.76% | 4,021 | 2 | CDP |
| Valparaiso | 12 | 4,872 | 4,755 | 0.41% | 415 | 12 | City |
| Valparaiso | 13 | 4,872 | 4,769 | 0.41% | 415 | 12 | City |
| Mary Esther | 14 | 4,089 | 3,987 | 0.47% | 2,810 | 1 | City |
| Mary Esther | 15 | 4,089 | 3,994 | 0.47% | 2,810 | 1 | City |
| Hurlburt Field | 16 | 3,475 | 2,478 | 7.15% | 345 | 10 | CDP |
| Eglin AFB | 17 | 2,880 | 2,448 | 1.41% | 951 | 3 | CDP |
| Harold | 18 | 873 | 1,070 | 0.34% | 59 | 15 | CDP |
| Shalimar | 19 | 761 | 738 | 0.53% | 2,652 | 0 | Town |
| Shalimar | 20 | 761 | 740 | 0.53% | 2,652 | 0 | Town |
| Laurel Hill | 21 | 610 | 587 | 0.66% | 145 | 4 | City |
| Laurel Hill | 22 | 610 | 589 | 0.66% | 145 | 4 | City |
| Cinco Bayou | 23 | 470 | 457 | 0.43% | 2,701 | 0 | Town |
| Cinco Bayou | 24 | 470 | 459 | 0.43% | 2,701 | 0 | Town |
| Munson | 25 | 394 | 301 | 0.25% | 16 | 25 | CDP |
Crestview is the largest city in Okaloosa County, with a population of 31,525.
Munson is the smallest city in Okaloosa County, with a population of 394.
There are 25 cities in Okaloosa County, Florida.