| Business | Phone |
| County Precinct 2 401 S Panna Maria Ave, Karnes City 78118 | (830) 254-3701 |
| Justice Of The Peace Pct 3 101 N Panna Maria Ave, Karnes City 78118 | (830) 780-4373 |
| Justice Of The Peace Pct 3 120 W Calvert Ave # 13, Karnes City 78118 | (830) 780-4373 |
| Texas Co-Op Ext Of Karnes Cnty 200 E Calvert Ave, Karnes City 78118 | (830) 780-3906 |
| Karnes County Appraisal Dist 915 S Panna Maria Ave, Karnes City 78118 | (830) 780-2433 |
| 81st Judicial District Elite 115 N Market St, Karnes City 78118 | (830) 780-4801 |