| ISO-3166-2 | Fips | GN | Name of Subdivision | Type | Capital | Population | lang | continent | From | Till |
|---|
| 1 | | | AH | Agana Heights  | municipality | Agana Heights Village | 3,940 | | OC | | |
| 2 | | | AN | Hagåtña | municipality | Hagåtña | 1,100 | | OC | | |
| 3 | | | AS | Asan | municipality | Asan-Maina Village | 2,137 | | OC | | |
| 4 | | | AT | Agat | municipality | Agat Village | 5,656 | | OC | | |
| 5 | | | BA | Barrigada | municipality | Barrigada Village | 8,875 | | OC | | |
| 6 | | | CP | Chalan-Pago-Ordot | municipality | Chalan Pago-Ordot Village | 6,822 | | OC | | |
| 7 | | | DD | Dededo | municipality | Dededo Village | 44,943 | | OC | | |
| 8 | | | IN | Inarajan | municipality | Inarajan Village | 3,052 | | OC | | |
| 9 | | | MA | Mangilao | municipality | Mangilao Village | 15,191 | | OC | | |
| 10 | | | ME | Merizo | municipality | Merizo Village | 1,850 | | OC | | |
| 11 | | | MT | Mongmong-Toto-Maite | municipality | Mongmong-Toto-Maite Village | 6,825 | | OC | | |
| 12 | | | PI | Piti | municipality | Piti Village | 1,666 | | OC | | |
| 13 | | | SJ | Sinajana | municipality | Sinajana Village | 2,592 | | OC | | |
| 14 | | | SR | Santa Rita | municipality | Santa Rita Village | 7,500 | | OC | | |
| 15 | | | TF | Talofofo | municipality | Talofofo Village | 3,215 | | OC | | |
| 16 | | | TM | Tamuning | municipality | Tamuning-Tumon-Harmon Village | 19,685 | | OC | | |
| 17 | | | UM | Umatac | municipality | Umatac Village | 903 | | OC | | |
| 18 | | | YG | Yigo | municipality | Yigo Village | 20,539 | | OC | | |
| 19 | | | YN | Yona | municipality | Yona Village | 6,484 | | OC | | |
