| ZIP | County | Primary City | Other Acceptable Names |
|---|---|---|---|
| 96910 | Hagatna | Hagatna | |
| 96912 | Dededo | Dededo | |
| 96913 | Barrigada | Barrigada | |
| 96915 | Santa Rita | Santa Rita | |
| 96916 | Merizo | Merizo | |
| 96917 | Inarajan | Inarajan | |
| 96919 | Agana Heights | Agana Heights | |
| 96921 | Barrigada | Barrigada | |
| 96923 | Mangilao | Mangilao | |
| 96928 | Agat | Agat | |
| 96929 | Yigo | Yigo | |
| 96931 | Tamuning | Tamuning | |
| 96932 | Hagatna | Hagatna |