Founded in 1836, Harris County is one of 254 counties in the state of Texas. Historically, Harris County was one of the original 23 counties. The city of Houston is the county seat. With FIPS code of 201, Harris County has a population of 4,728,030 and area of 1,729 square miles (4,478 km2).
List of all cities in Harris County, TX alphabetically
| City/Town | Postal Code | Area Code |
| Addicks, TX | 77079 | 713/281/832 |
| Addicks Barker, TX | 77084 | 713/281/832 |
| Aldine, TX | 77039 | 713/281/832 |
| Alief, TX | 77411 | 713/281/832 |
| Astrodome, TX | 77025 | 713/281/832 |
| 77230 | 713/281/832 | |
| Astroworld, TX | 77025 | 713/281/832 |
| Atascocita, TX | 77346 | 713/281/832 |
| Bammel, TX | 77040 | 713/281/832 |
| Bank of America, TX | 77299 | 713/281/832 |
| Barker, TX | 77413 | 713/281/832 |
| Baytown, TX | 77520 | 713/281/832 |
| 77521 | 713/281/832 | |
| 77522 | 713/281/832 | |
| Bayway, TX | 77520 | 713/281/832 |
| Beach City, TX | 77520 | 713/281/832 |
| Bellaire, TX | 77401 | 713/281/832 |
| 77402 | 713/281/832 | |
| Bordersville, TX | 77338 | 713/281/832 |
| Bunker Hill Village, TX | 77024 | 713/281/832 |
| Cedar Point, TX | 77520 | 713/281/832 |
| Channelview, TX | 77530 | 713/281/832 |
| Chase Bank, TX | 77212 | 713/281/832 |
| Chase Bank of TX, TX | 77297 | 713/281/832 |
| Chase Bank Texas, TX | 77216 | 713/281/832 |
| Clear Lake City, TX | 77058 | 713/281/832 |
| Cloverleaf, TX | 77015 | 713/281/832 |
| Clutch City, TX | 77002 | 713/281/832 |
| Cove, TX | 77520 | 713/281/832 |
| Crosby, TX | 77532 | 713/281/832 |
| Cypress, TX | 77410 | 713/281/832 |
| 77429 | 713/281/832 | |
| 77433 | 713/281/832 | |
| Deer Park, TX | 77536 | 713/281/832 |
| El Lago, TX | 77586 | 713/281/832 |
| Ellington Field, TX | 77209 | 713/281/832 |
| Fondren, TX | 77598 | 713/281/832 |
| Galena Park, TX | 77547 | 713/281/832 |
| Garth, TX | 77520 | 713/281/832 |
| Golden Acres, TX | 77503 | 713/281/832 |
| Greens Bayou, TX | 77015 | 713/281/832 |
| Greenway Plaza, TX | 77046 | 713/281/832 |
| Gridiron, TX | 77054 | 713/281/832 |
| Hedwig Village, TX | 77024 | 713/281/832 |
| Heights, TX | 77008 | 713/281/832 |
| Highlands, TX | 77562 | 713/281/832 |
| Hilshire Village, TX | 77055 | 713/281/832 |
| Hockley, TX | 77447 | 936 |
| Hockley Mine, TX | 77447 | 936 |
| Houston, TX | 77001 | 713/281/832 |
| 77002 | 713/281/832 | |
| 77003 | 713/281/832 | |
| 77004 | 713/281/832 | |
| 77005 | 713/281/832 | |
| 77006 | 713/281/832 | |
| 77007 | 713/281/832 | |
| 77008 | 713/281/832 | |
| 77009 | 713/281/832 | |
| 77010 | 713/281/832 | |
| 77011 | 713/281/832 | |
| 77012 | 713/281/832 | |
| 77013 | 713/281/832 | |
| 77014 | 713/281/832 | |
| 77015 | 713/281/832 | |
| 77016 | 713/281/832 | |
| 77017 | 713/281/832 | |
| 77018 | 713/281/832 | |
| 77019 | 713/281/832 | |
| 77020 | 713/281/832 | |
| 77021 | 713/281/832 | |
| 77022 | 713/281/832 | |
| 77023 | 713/281/832 | |
| 77024 | 713/281/832 | |
| 77025 | 713/281/832 | |
| 77026 | 713/281/832 | |
| 77027 | 713/281/832 | |
| 77028 | 713/281/832 | |
| 77029 | 713/281/832 | |
| 77030 | 713/281/832 | |
| 77031 | 713/281/832 | |
| 77032 | 713/281/832 | |
| 77033 | 713/281/832 | |
| 77034 | 713/281/832 | |
| 77035 | 713/281/832 | |
| 77036 | 713/281/832 | |
| 77037 | 713/281/832 | |
| 77038 | 713/281/832 | |
| 77039 | 713/281/832 | |
| 77040 | 713/281/832 | |
| 77041 | 713/281/832 | |
| 77042 | 713/281/832 | |
| 77043 | 713/281/832 | |
| 77044 | 713/281/832 | |
| 77045 | 713/281/832 | |
| 77046 | 713/281/832 | |
| 77047 | 713/281/832 | |
| 77048 | 713/281/832 | |
| 77049 | 713/281/832 | |
| 77050 | 713/281/832 | |
| 77051 | 713/281/832 | |
| 77052 | 713/281/832 | |
| 77054 | 713/281/832 | |
| 77055 | 713/281/832 | |
| 77056 | 713/281/832 | |
| 77057 | 713/281/832 | |
| 77058 | 713/281/832 | |
| 77059 | 713/281/832 | |
| 77060 | 713/281/832 | |
| 77061 | 713/281/832 | |
| 77062 | 713/281/832 | |
| 77063 | 713/281/832 | |
| 77064 | 713/281/832 | |
| 77065 | 713/281/832 | |
| 77066 | 713/281/832 | |
| 77067 | 713/281/832 | |
| 77068 | 713/281/832 | |
| 77069 | 713/281/832 | |
| 77070 | 713/281/832 | |
| 77071 | 713/281/832 | |
| 77072 | 713/281/832 | |
| 77073 | 713/281/832 | |
| 77074 | 713/281/832 | |
| 77075 | 713/281/832 | |
| 77076 | 713/281/832 | |
| 77077 | 713/281/832 | |
| 77078 | 713/281/832 | |
| 77079 | 713/281/832 | |
| 77080 | 713/281/832 | |
| 77081 | 713/281/832 | |
| 77082 | 713/281/832 | |
| 77083 | 713/281/832 | |
| 77084 | 713/281/832 | |
| 77085 | 713/281/832 | |
| 77086 | 713/281/832 | |
| 77087 | 713/281/832 | |
| 77088 | 713/281/832 | |
| 77089 | 713/281/832 | |
| 77090 | 713/281/832 | |
| 77091 | 713/281/832 | |
| 77092 | 713/281/832 | |
| 77093 | 713/281/832 | |
| 77094 | 713/281/832 | |
| 77095 | 713/281/832 | |
| 77096 | 713/281/832 | |
| 77097 | 713/281/832 | |
| 77098 | 713/281/832 | |
| 77099 | 713/281/832 | |
| 77201 | 713/281/832 | |
| 77202 | 713/281/832 | |
| 77203 | 713/281/832 | |
| 77204 | 713/281/832 | |
| 77205 | 713/281/832 | |
| 77206 | 713/281/832 | |
| 77207 | 713/281/832 | |
| 77208 | 713/281/832 | |
| 77209 | 713/281/832 | |
| 77210 | 713/281/832 | |
| 77212 | 713/281/832 | |
| 77213 | 713/281/832 | |
| 77215 | 713/281/832 | |
| 77216 | 713/281/832 | |
| 77217 | 713/281/832 | |
| 77218 | 713/281/832 | |
| 77219 | 713/281/832 | |
| 77220 | 713/281/832 | |
| 77221 | 713/281/832 | |
| 77222 | 713/281/832 | |
| 77223 | 713/281/832 | |
| 77224 | 713/281/832 | |
| 77225 | 713/281/832 | |
| 77226 | 713/281/832 | |
| 77227 | 713/281/832 | |
| 77228 | 713/281/832 | |
| 77229 | 713/281/832 | |
| 77230 | 713/281/832 | |
| 77231 | 713/281/832 | |
| 77233 | 713/281/832 | |
| 77234 | 713/281/832 | |
| 77235 | 713/281/832 | |
| 77236 | 713/281/832 | |
| 77237 | 713/281/832 | |
| 77238 | 713/281/832 | |
| 77240 | 713/281/832 | |
| 77241 | 713/281/832 | |
| 77242 | 713/281/832 | |
| 77243 | 713/281/832 | |
| 77244 | 713/281/832 | |
| 77245 | 713/281/832 | |
| 77246 | 713/281/832 | |
| 77247 | 713/281/832 | |
| 77248 | 713/281/832 | |
| 77249 | 713/281/832 | |
| 77250 | 713/281/832 | |
| 77251 | 713/281/832 | |
| 77252 | 713/281/832 | |
| 77253 | 713/281/832 | |
| 77254 | 713/281/832 | |
| 77255 | 713/281/832 | |
| 77256 | 713/281/832 | |
| 77257 | 713/281/832 | |
| 77258 | 713/281/832 | |
| 77259 | 713/281/832 | |
| 77260 | 713/281/832 | |
| 77261 | 713/281/832 | |
| 77262 | 713/281/832 | |
| 77263 | 713/281/832 | |
| 77265 | 713/281/832 | |
| 77266 | 713/281/832 | |
| 77267 | 713/281/832 | |
| 77268 | 713/281/832 | |
| 77269 | 713/281/832 | |
| 77270 | 713/281/832 | |
| 77271 | 713/281/832 | |
| 77272 | 713/281/832 | |
| 77273 | 713/281/832 | |
| 77274 | 713/281/832 | |
| 77275 | 713/281/832 | |
| 77276 | 713/281/832 | |
| 77277 | 713/281/832 | |
| 77278 | 713/281/832 | |
| 77279 | 713/281/832 | |
| 77280 | 713/281/832 | |
| 77282 | 713/281/832 | |
| 77284 | 713/281/832 | |
| 77285 | 713/281/832 | |
| 77286 | 713/281/832 | |
| 77287 | 713/281/832 | |
| 77288 | 713/281/832 | |
| 77289 | 713/281/832 | |
| 77290 | 713/281/832 | |
| 77291 | 713/281/832 | |
| 77292 | 713/281/832 | |
| 77293 | 713/281/832 | |
| 77294 | 713/281/832 | |
| 77296 | 713/281/832 | |
| 77297 | 713/281/832 | |
| 77298 | 713/281/832 | |
| 77299 | 713/281/832 | |
| Houston Heights, TX | 77008 | 713/281/832 |
| Howellville, TX | 77411 | 713/281/832 |
| Huffman, TX | 77336 | 713/281/832 |
| Hufsmith, TX | 77337 | 713/281/832 |
| Humble, TX | 77325 | 713/281/832 |
| 77338 | 713/281/832 | |
| 77339 | 713/281/832 | |
| 77345 | 713/281/832 | |
| 77346 | 713/281/832 | |
| 77347 | 713/281/832 | |
| 77396 | 713/281/832 | |
| Hunters Creek Village, TX | 77024 | 713/281/832 |
| Jersey Village, TX | 77040 | 713/281/832 |
| 77041 | 713/281/832 | |
| 77065 | 713/281/832 | |
| Katy, TX | 77449 | 713/281/832 |
| 77450 | 713/281/832 | |
| 77491 | 713/281/832 | |
| 77492 | 713/281/832 | |
| 77493 | 713/281/832 | |
| Kingwood, TX | 77325 | 713/281/832 |
| 77339 | 713/281/832 | |
| 77345 | 713/281/832 | |
| 77346 | 713/281/832 | |
| Klein, TX | 77379 | 713/281/832 |
| 77389 | 713/281/832 | |
| 77391 | 713/281/832 | |
| Kohrville, TX | 77040 | 713/281/832 |
| La Porte, TX | 77571 | 713/281/832 |
| 77572 | 713/281/832 | |
| Lakewood, TX | 77520 | 713/281/832 |
| Lomax, TX | 77571 | 713/281/832 |
| Lynchburg, TX | 77520 | 713/281/832 |
| Lyndon B Johnson Space Cen, TX | 77058 | 713/281/832 |
| McNair, TX | 77520 | 713/281/832 |
| Memorial Park, TX | 77024 | 713/281/832 |
| 77224 | 713/281/832 | |
| 77279 | 713/281/832 | |
| Mont Belvieu, TX | 77520 | 713/281/832 |
| Morgans Point, TX | 77571 | 713/281/832 |
| Nassau Bay, TX | 77058 | 713/281/832 |
| 77258 | 713/281/832 | |
| Ncnb, TX | 77298 | 713/281/832 |
| North Houston, TX | 77315 | 713/281/832 |
| Old River-Winfree, TX | 77520 | 713/281/832 |
| Old Rvr-Wnfre, TX | 77520 | 713/281/832 |
| Park Row, TX | 77449 | 713/281/832 |
| 77450 | 713/281/832 | |
| 77491 | 713/281/832 | |
| 77493 | 713/281/832 | |
| Pasadena, TX | 77501 | 713/281/832 |
| 77502 | 713/281/832 | |
| 77503 | 713/281/832 | |
| 77504 | 713/281/832 | |
| 77505 | 713/281/832 | |
| 77506 | 713/281/832 | |
| 77507 | 713/281/832 | |
| 77508 | 713/281/832 | |
| Piney Point, TX | 77024 | 713/281/832 |
| Prairie View, TX | 77484 | 936 |
| Rayford, TX | 77373 | 713/281/832 |
| Rose Hill, TX | 77375 | 713/281/832 |
| Satsuma, TX | 77040 | 713/281/832 |
| Seabrook, TX | 77586 | 713/281/832 |
| Sharpstown, TX | 77036 | 713/281/832 |
| Sheldon, TX | 77028 | 713/281/832 |
| Shoreacres, TX | 77571 | 713/281/832 |
| South Houston, TX | 77587 | 713/281/832 |
| Southside Place, TX | 77005 | 713/281/832 |
| Spring, TX | 77373 | 713/281/832 |
| 77379 | 713/281/832 | |
| 77383 | 713/281/832 | |
| 77388 | 713/281/832 | |
| 77389 | 713/281/832 | |
| 77391 | 713/281/832 | |
| Spring Valley, TX | 77024 | 713/281/832 |
| Stewart Heights, TX | 77520 | 713/281/832 |
| Sylvan Beach, TX | 77571 | 713/281/832 |
| Taylor Lake Village, TX | 77586 | 713/281/832 |
| The Woodlands, TX | 77389 | 713/281/832 |
| Timber Cove, TX | 77586 | 713/281/832 |
| Tod, TX | 77586 | 713/281/832 |
| Tomball, TX | 77337 | 713/281/832 |
| 77375 | 713/281/832 | |
| 77377 | 713/281/832 | |
| Trammells, TX | 77045 | 713/281/832 |
| U S P S Official, TX | 77201 | 713/281/832 |
| University of Houston, TX | 77204 | 713/281/832 |
| V A Hospital, TX | 77030 | 713/281/832 |
| Waller, TX | 77484 | 936 |
| Webster, TX | 77598 | 713/281/832 |
| West University Place, TX | 77005 | 713/281/832 |