| Code | Name | Region |
|---|---|---|
| COAUC | Arauca | |
| COARQ | Arauquita | ARA |
| COARO | Arboletas | ANT |
| COARE | Arenal | BOL |
| COACM | Arica | |
| COARI | Ariguani | CES |
| COARJ | Arjona | CES |
| COAXM | Armenia | |
| COAGY | Armero Guayabal | TOL |
| COASR | Astrea | |
| COAYC | Ayacucho | |
| COAYA | Ayapel | |
| COBHF | Bahia Cupica | CHO |
| COBSC | Bahia Solano | CHO |
| CO | ||
| COAAS | Acacias | MET |
| COACD | Acandi | ANT |
| COARF | Acaricuara | VAU |
| COAGD | Agrado | |
| COAGC | Aguachica | CES |
| COACL | Aguaclara | NAR |
| COAGU | Aguadas | CAL |
| COABL | Aguasblancas | CES |
| COAFI | Amalfi | ANT |
| COAND | Andalucia | |
| COADN | Andes | ANT |