132 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 77449 | Katy | 122,098 |
| 77084 | Houston | 108,557 |
| 77433 | Cypress | 107,887 |
| 77429 | Cypress | 90,790 |
| 77379 | Spring | 83,247 |
| 77083 | Houston | 75,004 |
| 77450 | Katy | 72,651 |
| 77036 | Houston | 72,278 |
| 77346 | Humble | 70,704 |
| 77095 | Houston | 69,644 |
| 77375 | Tomball | 67,965 |
| 77521 | Baytown | 66,215 |
| 77373 | Spring | 64,828 |
| 77077 | Houston | 62,933 |
| 77072 | Houston | 61,688 |
| 77396 | Humble | 60,253 |
| 77015 | Houston | 59,314 |
| 77070 | Houston | 58,409 |
| 77089 | Houston | 56,988 |
| 77493 | Katy | 55,317 |
| 77044 | Houston | 54,313 |
| 77088 | Houston | 54,007 |
| 77082 | Houston | 53,401 |
| 77081 | Houston | 52,360 |
| 77388 | Spring | 52,127 |
| 77040 | Houston | 49,762 |
| 77099 | Houston | 49,541 |
| 77064 | Houston | 49,240 |
| 77093 | Houston | 48,215 |
| 77338 | Humble | 47,997 |
| 77080 | Houston | 47,661 |
| 77060 | Houston | 46,266 |
| 77057 | Houston | 45,023 |
| 77339 | Kingwood | 43,810 |
| 77389 | Spring | 43,674 |
| 77055 | Houston | 43,362 |
| 77007 | Houston | 42,881 |
| 77073 | Houston | 41,866 |
| 77075 | Houston | 41,271 |
| 77049 | Houston | 41,035 |
| 77090 | Houston | 40,764 |
| 77042 | Houston | 40,747 |
| 77063 | Houston | 39,554 |
| 77066 | Houston | 39,234 |
| 77065 | Houston | 38,994 |
| 77074 | Houston | 38,624 |
| 77008 | Houston | 38,496 |
| 77377 | Tomball | 38,188 |
| 77014 | Houston | 37,573 |
| 77506 | Pasadena | 37,561 |
| 77571 | La Porte | 37,346 |
| 77034 | Houston | 37,273 |
| 77024 | Houston | 37,269 |
| 77009 | Houston | 36,872 |
| 77520 | Baytown | 36,488 |
| 77502 | Pasadena | 36,374 |
| 77092 | Houston | 36,320 |
| 77087 | Houston | 35,960 |
| 77004 | Houston | 35,506 |
| 77079 | Houston | 35,097 |
| 77035 | Houston | 34,254 |
| 77047 | Houston | 33,569 |
| 77076 | Houston | 33,529 |
| 77536 | Deer Park | 33,111 |
| 77096 | Houston | 33,001 |
| 77017 | Houston | 32,574 |
| 77045 | Houston | 32,478 |
| 77067 | Houston | 32,405 |
| 77038 | Houston | 32,142 |
| 77041 | Houston | 31,912 |
| 77532 | Crosby | 31,384 |
| 77530 | Channelview | 31,304 |
| 77091 | Houston | 30,357 |
| 77086 | Houston | 29,705 |
| 77016 | Houston | 29,376 |
| 77025 | Houston | 29,295 |
| 77018 | Houston | 28,892 |
| 77005 | Houston | 28,470 |
| 77033 | Houston | 28,255 |
| 77039 | Houston | 27,907 |
| 77071 | Houston | 26,990 |
| 77022 | Houston | 26,903 |
| 77345 | Kingwood | 26,791 |
| 77054 | Houston | 26,708 |
| 77598 | Webster | 26,635 |
| 77043 | Houston | 25,900 |
| 77020 | Houston | 25,715 |
| 77023 | Houston | 25,680 |
| 77021 | Houston | 25,500 |
| 77504 | Pasadena | 25,401 |
| 77061 | Houston | 25,169 |
| 77062 | Houston | 24,561 |
| 77006 | Houston | 24,006 |
| 77586 | Seabrook | 23,802 |
| 77503 | Pasadena | 23,248 |
| 77505 | Pasadena | 23,179 |
| 77019 | Houston | 22,839 |
| 77056 | Houston | 21,941 |
| 77026 | Houston | 20,732 |
| 77069 | Houston | 20,633 |
| 77048 | Houston | 19,741 |
| 77027 | Houston | 19,478 |
| 77447 | Hockley | 19,196 |
| 77002 | Houston | 18,800 |
| 77028 | Houston | 18,669 |
| 77013 | Houston | 18,512 |
| 77059 | Houston | 18,370 |
| 77058 | Houston | 17,956 |
| 77012 | Houston | 17,950 |
| 77037 | Houston | 17,585 |
| 77031 | Houston | 17,351 |
| 77401 | Bellaire | 17,233 |
| 77051 | Houston | 16,974 |
| 77011 | Houston | 16,685 |
| 77085 | Houston | 16,550 |
| 77587 | South Houston | 16,185 |
| 77029 | Houston | 16,008 |
| 77098 | Houston | 15,553 |
| 77078 | Houston | 14,241 |
| 77032 | Houston | 13,743 |
| 77030 | Houston | 12,546 |
| 77336 | Huffman | 11,835 |
| 77068 | Houston | 11,451 |
| 77094 | Houston | 10,623 |
| 77003 | Houston | 10,169 |
| 77562 | Highlands | 9,793 |
| 77547 | Galena Park | 9,336 |
| 77050 | Houston | 5,949 |
| 77204 | Houston | 4,310 |
| 77046 | Houston | 1,254 |
| 77010 | Houston | 837 |
| 77507 | Pasadena | 561 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 132 ZCTAs in Harris County, Texas (US Census).