| Arapaho, OK (Town) |
| Arapahoe, NC (Town) |
| Arapahoe, NE (City) |
| Arapahoe County, CO (County) |
| Ararat, PA (Township) |
| Arbela, MO (Town) |
| Arbela Township, MI (Township) |
| Arbo, MN (Township) |
| Arbor Greene Community Development District, FL (CDD) |
| Arbor Vitae, WI (Town) |
| Arborwood Community Development District, FL (CDD) |
| Arbyrd, MO (City) |
| Arcada Township, MI (Township) |
| Arcade, SD (Township) |
| Arcade, NY (Town) |
