| Locality | Post Code |
|---|---|
| Galena Park, Harris | 77547 |
| Garth, Harris | 77520 |
| Golden Acres, Harris | 77503 |
| Greens Bayou, Harris | 77015 |
| Greenway Plaza, Harris | 77046 |
| Gridiron, Harris | 77054 |
| Hedwig Village, Harris | 77024 |
| Heights, Harris | 77008 |
| Highlands, Harris | 77562 |
| Hilshire Village, Harris | 77055 |
| Hockley, Harris | 77447 |
| Hockley Mine, Harris | 77447 |
| Houston, Harris | 77002, 77003, 77004, 77005, 77006, … |
| Houston Heights, Harris | 77008 |
| Howellville, Harris | 77411 |
| Huffman, Harris | 77336 |
| Hufsmith, Harris | 77337 |
| Humble, Harris | 77205, 77338, 77346, 77396 |
| Hunters Creek Village, Harris | 77024 |
| Jacinto City, Harris | 77029 |
| Jersey Village, Harris | 77040, 77041, 77064, 77065 |
| Katy, Harris | 77449, 77450, 77493 |
| Kingwood, Harris | 77339, 77345 |
| Klein, Harris | 77379 |
| Kohrville, Harris | 77040 |
| La Porte, Harris | 77571 |