- Anthony
- Arcola
- Argyle
- Athens
- Atlanta
- Aurora
- Ames
- A and E Ramirez Colonia
- A and E Ramirez Colonia Number 2
- A F Pierce Colonia
- A T Martinez Colonia
- Abell
- Abell City
- Abercrombie
- Abercrombie
- Aberdeen
- Aberfoyle
- Abington
- Ables Springs
- Abner
- Abram
- Abram North Colonia
- Abram-Perezville
- Abshier Settlement
- Acacia Colonia
- Academy
- Acala
- Acampo
- Ace
- Acevedo Colonia Number 4