31 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Houston | 1 | 2,412,920 | 2,298,945 | 0.95% | 3,765 | 641 | City |
| Pasadena | 2 | 149,159 | 151,449 | -0.31% | 3,414 | 44 | City |
| Baytown | 3 | 86,146 | 85,436 | 0.17% | 2,154 | 40 | City |
| La Porte | 4 | 38,731 | 35,304 | 1.8% | 2,082 | 19 | City |
| Deer Park | 5 | 34,527 | 34,364 | 0.09% | 3,265 | 11 | City |
| Bellaire | 6 | 17,502 | 17,187 | 0.36% | 4,866 | 4 | City |
| Humble | 7 | 16,520 | 16,724 | -0.25% | 1,667 | 10 | City |
| South Houston | 8 | 16,143 | 16,155 | -0.02% | 5,300 | 3 | City |
| Tomball | 9 | 15,858 | 12,327 | 4.66% | 1,218 | 13 | City |
| West University Place | 10 | 15,183 | 15,012 | 0.22% | 7,576 | 2 | City |
| Seabrook | 11 | 14,073 | 13,586 | 0.69% | 2,869 | 5 | City |
| Webster | 12 | 12,572 | 12,449 | 0.19% | 1,982 | 6 | City |
| Galena Park | 13 | 10,375 | 10,689 | -0.6% | 2,160 | 5 | City |
| Jacinto City | 14 | 9,395 | 9,573 | -0.38% | 5,070 | 2 | City |
| Jersey Village | 15 | 7,753 | 7,943 | -0.49% | 2,230 | 3 | City |
| Nassau Bay | 16 | 5,205 | 5,324 | -0.46% | 4,284 | 1 | City |
| Hunters Creek Village | 17 | 4,508 | 4,378 | 0.58% | 2,304 | 2 | City |
| Waller | 18 | 4,497 | 2,701 | 8.68% | 735 | 6 | City |
| Spring Valley Village | 19 | 4,436 | 4,224 | 0.96% | 3,651 | 1 | City |
| Bunker Hill Village | 20 | 3,906 | 3,820 | 0.44% | 2,709 | 1 | City |
| Taylor Lake Village | 21 | 3,817 | 3,690 | 0.66% | 3,405 | 1 | City |
| Piney Point Village | 22 | 3,153 | 3,101 | 0.32% | 1,481 | 2 | City |
| El Lago | 23 | 2,972 | 3,060 | -0.6% | 4,615 | 1 | City |
| Roman Forest | 24 | 2,512 | 1,786 | 6.13% | 1,154 | 2 | City |
| Hedwig Village | 25 | 2,388 | 2,375 | 0.08% | 2,524 | 1 | City |
| Patton Village | 26 | 2,060 | 1,659 | 4.04% | 907 | 2 | City |
| Southside Place | 27 | 1,927 | 1,829 | 1% | 7,739 | 0 | City |
| Woodbranch | 28 | 1,647 | 1,346 | 3.78% | 820 | 2 | City |
| Shoreacres | 29 | 1,536 | 1,555 | -0.26% | 1,695 | 1 | City |
| Hilshire Village | 30 | 842 | 814 | 0.6% | 3,154 | 0 | City |
| Morgan's Point | 31 | 273 | 270 | 0% | 333 | 1 | City |
Houston is the largest city in Harris County, with a population of 2,412,920.
Morgan's Point is the smallest city in Harris County, with a population of 273.
There are 31 cities in Harris County, Texas.