- Abbott
- Abernathy
- Abilene
- Ackerly
- Airport Road Addition
- Alamo Heights
- Aldine
- Alice Acres
- Allen
- Alto Bonito
- Alto Bonito Colonia
- Alton North
- Alvin
- Alvord
- Amarillo
- Anderson Mill
- Angleton
- Annetta
- Annetta North
- Annetta South
- Annona
- Aransas Pass
- Archer City
- Alderbranch
- Arlington
- Arp
- Arroyo Alto
- Asherton
- Aspermont
- Atascocita