- Ackley
- Ackworth
- Adair
- Adel
- Afton
- Agency
- Ainsworth
- Akron
- Albert City
- Albia
- Albion
- Alburnett
- Alden
- Alexander
- Algona
- Alleman
- Allerton
- Allison
- Alta
- Alta Vista
- Alton
- Altoona
- Alvord
- Amana
- Ames
- Anamosa
- Anderson
- Andover
- Andrew
- Anita
- Ankeny
- Anthon
- Aplington
- Arcadia
- Archer
- Aredale
- Arion
- Arispe
- Arlington
- Armstrong
- Arnolds Park
- Arthur
- Asbury
- Ashton
- Aspinwall
- Atalissa
- Athelstan
- Atkins
- Atlantic
- Auburn
- Audubon
- Aurelia
- Aurora
- Avoca
- Ayrshire
