31 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Houston | 1 | 2,435,715 | 2,298,945 | 0.94% | 3,801 | 641 | City |
| Pasadena | 2 | 148,701 | 151,449 | -0.31% | 3,404 | 44 | City |
| Baytown | 3 | 86,288 | 85,436 | 0.16% | 2,158 | 40 | City |
| La Porte | 4 | 39,417 | 35,304 | 1.77% | 2,119 | 19 | City |
| Deer Park | 5 | 34,560 | 34,364 | 0.1% | 3,268 | 11 | City |
| Bellaire | 6 | 17,565 | 17,187 | 0.36% | 4,883 | 4 | City |
| Tomball | 7 | 16,564 | 12,327 | 4.45% | 1,272 | 13 | City |
| Humble | 8 | 16,479 | 16,724 | -0.25% | 1,663 | 10 | City |
| South Houston | 9 | 16,141 | 16,155 | -0.01% | 5,299 | 3 | City |
| West University Place | 10 | 15,217 | 15,012 | 0.22% | 7,593 | 2 | City |
| Seabrook | 11 | 14,171 | 13,586 | 0.7% | 2,889 | 5 | City |
| Webster | 12 | 12,597 | 12,449 | 0.2% | 1,986 | 6 | City |
| Galena Park | 13 | 10,312 | 10,689 | -0.61% | 2,147 | 5 | City |
| Jacinto City | 14 | 9,360 | 9,573 | -0.37% | 5,051 | 2 | City |
| Jersey Village | 15 | 7,715 | 7,943 | -0.49% | 2,220 | 3 | City |
| Nassau Bay | 16 | 5,181 | 5,324 | -0.46% | 4,264 | 1 | City |
| Waller | 17 | 4,856 | 2,701 | 7.98% | 793 | 6 | City |
| Hunters Creek Village | 18 | 4,534 | 4,378 | 0.58% | 2,317 | 2 | City |
| Spring Valley Village | 19 | 4,479 | 4,224 | 0.97% | 3,686 | 1 | City |
| Bunker Hill Village | 20 | 3,923 | 3,820 | 0.44% | 2,721 | 1 | City |
| Taylor Lake Village | 21 | 3,843 | 3,690 | 0.68% | 3,428 | 1 | City |
| Piney Point Village | 22 | 3,164 | 3,101 | 0.35% | 1,486 | 2 | City |
| El Lago | 23 | 2,955 | 3,060 | -0.57% | 4,589 | 1 | City |
| Roman Forest | 24 | 2,657 | 1,786 | 5.77% | 1,221 | 2 | City |
| Hedwig Village | 25 | 2,391 | 2,375 | 0.13% | 2,527 | 1 | City |
| Patton Village | 26 | 2,140 | 1,659 | 3.88% | 942 | 2 | City |
| Southside Place | 27 | 1,947 | 1,829 | 1.04% | 7,819 | 0 | City |
| Woodbranch | 28 | 1,707 | 1,346 | 3.64% | 850 | 2 | City |
| Shoreacres | 29 | 1,532 | 1,555 | -0.26% | 1,691 | 1 | City |
| Hilshire Village | 30 | 848 | 814 | 0.71% | 3,176 | 0 | City |
| Morgan's Point | 31 | 274 | 270 | 0.37% | 334 | 1 | City |
Houston is the largest city in Harris County, with a population of 2,435,715.
Morgan's Point is the smallest city in Harris County, with a population of 274.
There are 31 cities in Harris County, Texas.