- Abbott
- Abernathy
- Abram
- Ackerly
- Addison
- Agua Dulce
- Agua Dulce
- Aguilares
- Airport Road Addition
- Alamo
- Alamo Heights
- Alba
- Aldine
- Aledo
- Alfred
- Alice
- Alice Acres
- Alief
- Alma
- Alto
- Alto Bonito
- Alto Bonito Colonia
- Alton
- Alton North (historical)
- Alvarado
- Alvord
- Amargosa Colonia
- Amaya Colonia
- Ames
- Ames
- Amistad Acres
- Anderson Mill
- Angus
- Anna
- Annetta
- Annetta North
- Annetta South
- Annona
- Anson
- Anthony
- Anton
- Appleby
- Aquilla
- Aransas Pass
- Archer City
- Arcola
- Argyle
- Arp
- Arroyo Alto
- Arroyo Colorado Estates Colonia
- Arroyo Gardens
- Asherton
- Asherton
- Aspermont
- Atascocita
- Athens
- Aubrey
- Austwell
- Avery
- Avinger
- Azle
