Founded in 1876, Randall County is one of 254 counties in the state of Texas. Historically, Randall County was formed from Bexar County. The city of Canyon is the county seat. With FIPS code of 381, Randall County has a population of 143,854 and area of 914 square miles (2,367 km2).
List of all cities in Randall County, TX alphabetically
| City/Town | Postal Code | Area Code |
| Amarillo, TX | 79109 | 806 |
| 79110 | 806 | |
| 79114 | 806 | |
| 79118 | 806 | |
| 79119 | 806 | |
| 79121 | 806 | |
| Canyon, TX | 79015 | 806 |
| 79016 | 806 | |
| Umbarger, TX | 79091 | 806 |
| West Texas A&M University, TX | 79016 | 806 |