| Zipcode | Community | City | State | Metro Area |
|---|---|---|---|---|
| 04530 | Arrowsic | Bath | Maine | Portland-South Portland ME |
| 23003 | Ark | Ark | Virginia | Virginia Beach-Norfolk-Newport News VA-N |
| 40902 | Arjay | Arjay | Kentucky | Middlesborough KY |
| 41568 | Argo | Stopover | Kentucky | |
| 46501 | Argos | Argos | Indiana | Plymouth IN |
| 56113 | Arco | Arco | Minnesota | |
| 56470 | Arago | Park rapids | Minnesota | |
| 62246 | Ayers | Greenville | Illinois | St. Louis MO-IL |
| 64725 | Archie | Archie | Missouri | Kansas City MO-KS |
| 65320 | Arrow rock | Arrow rock | Missouri | Marshall MO |
| 71343 | Archie | Jonesville | Louisiana | |
| 83213 | Arco | Arco | Idaho | Idaho Falls ID |
| 84532 | Arches | Moab | Utah | |
| 87514 | Arroyo seco | Arroyo seco | New Mexico | Taos NM |
| 88130 | Arch | Portales | New Mexico | Portales NM |
| 93562 | Argus | Trona | California | Riverside-San Bernardino-Ontario CA |
| 97902 | Arock | Arock | Oregon | Ontario OR-ID |