Founded in 1836, San Patricio County is one of 254 counties in the state of Texas. Historically, San Patricio County was one of the original 23 counties. The city of Sinton is the county seat. With FIPS code of 409, San Patricio County has a population of 69,699 and area of 692 square miles (1,792 km2).
List of all cities in San Patricio County, TX alphabetically
| City/Town | Postal Code | Area Code |
| Aransas Pass, TX | 78335 | 361 |
| 78336 | 361 | |
| Argenta, TX | 78368 | 361 |
| City by the Sea, TX | 78336 | 361 |
| Edroy, TX | 78352 | 361 |
| Gregory, TX | 78359 | 361 |
| Hubert, TX | 78368 | 361 |
| Ingleside, TX | 78362 | 361 |
| Ingleside on the Bay, TX | 78362 | 361 |
| Lake City, TX | 78368 | 361 |
| Mathis, TX | 78368 | 361 |
| Odem, TX | 78370 | 361 |
| Papalote, TX | 78387 | 361 |
| Portland, TX | 78374 | 361 |
| San Patricio, TX | 78368 | 361 |
| Sinton, TX | 78387 | 361 |
| Sodville, TX | 78387 | 361 |
| Swinney Switch, TX | 78368 | 361 |
| Taft, TX | 78390 | 361 |