| Locality | Post Code |
|---|---|
| Bay City, Matagorda | 77414 |
| Blessing, Matagorda | 77419 |
| Buckeye, Matagorda | 77414 |
| Cedar Lake, Matagorda | 77414 |
| Cedar Lane, Matagorda | 77415 |
| Clemville, Matagorda | 77414 |
| Collegeport, Matagorda | 77428 |
| Elmaton, Matagorda | 77440 |
| Markham, Matagorda | 77456 |
| Matagorda, Matagorda | 77457 |
| Midfield, Matagorda | 77458 |
| Palacios, Matagorda | 77465 |
| Pledger, Matagorda | 77468 |
| Sargent, Matagorda | 77414 |
| Van Vleck, Matagorda | 77482 |
| Wadsworth, Matagorda | 77483 |