DISTRICT GAMPAHA DISTRIC CODE GQ
| CITY | POSTAL CODE |
| Akaragama | 11536 |
| Alawala | 11122 |
| Ambagaspitiya | 11052 |
| Ambepussa | 11212 |
| Andiambalama | 11558 |
| Attanagalla | 11120 |
| Badalgama | 11538 |
| Banduragoda | 11244 |
| Batuwatta | 11011 |
| Bemmulla | 11040 |
| Biyagama | 11650 |
| Biyagama IPZ | 11672 |
| Bokalagama | 11216 |
| Bollete (WP) | 11024 |
| Bopagama | 11134 |
| Buthpitiya | 11720 |
| Dagonna | 11524 |
| Danowita | 11896 |
| Debahera | 11889 |
| Dekatana | 11690 |
| Delgoda | 11700 |
| Delwagura | 11228 |
| Demalagama | 11692 |
| Demanhandiya | 11270 |
| Dewalapola | 11102 |
| Divulapitiya | 11250 |
| Divuldeniya | 11208 |
| Dompe | 11680 |
| Dunagaha | 11264 |
| Ekala | 11380 |
| Ellakkala | 11116 |
| Essella | 11108 |
| Gampaha | 11000 |
| Ganemulla | 11020 |
| GonawalaWP | 11630 |
| Heiyanthuduwa | 11618 |
| Henegama | 11715 |
| Hinatiyana Madawala | 11568 |
| Hiswella | 11734 |
| Horampella | 11564 |
| Hunumulla | 11262 |
| Ihala Madampella | 11265 |
| Imbulgoda | 11856 |
| Ja-Ela | 11350 |
| Kadawatha | 11850 |
| Kahatowita | 11144 |
| Kalagedihena | 11875 |
| Kaleliya | 11160 |
| Kaluaggala | 11224 |
| Kandana | 11320 |
| Kapugoda | 10662 |
| Katana | 11534 |
| Katunayake | 11450 |
| Katunayake Air Force Camp | 11440 |
| Katunayake(FTZ) | 11420 |
| Katuwellegama | 11526 |
| Kelaniya | 11600 |
| Kimbulapitiya | 11522 |
| Kirindiwela | 11730 |
| Kitalawalana | 11206 |
| Kitulwala | 11242 |
| Kochchikade | 11540 |
| Kotadeniyawa | 11232 |
| Kotugoda | 11390 |
| Kumbaloluwa | 11105 |
| Loluwagoda | 11204 |
| Lunugama | 11062 |
| Mabodale | 11114 |
| Madelgamuwa | 11033 |
| Makewita | 11358 |
| Makola | 11640 |
| Malwana | 11670 |
| Mandawala | 11061 |
| Marandagahamula | 11260 |
| Mellawagedara | 11234 |
| Minuwangoda | 11550 |
| Mirigama | 11200 |
| Mithirigala | 11742 |
| Muddaragama | 11112 |
| Mudungoda | 11056 |
| Naranwala | 11063 |
| Nawana | 11222 |
| Nedungamuwa | 11066 |
| Negombo | 11500 |
| Nikahetikanda | 11128 |
| Nittambuwa | 11880 |
| Niwandama | 11354 |
| Pallewela | 11150 |
| Pamunugama | 11370 |
| Pamunuwatta | 11214 |
| Pasyala | 11890 |
| Peliyagoda | 11830 |
| Pepiliyawala | 11741 |
| Pethiyagoda | 11043 |
| Polpithimukulana | 11324 |
| Pugoda | 10660 |
| Radawadunna | 11892 |
| Radawana | 11725 |
| Raddolugama | 11400 |
| Ragama | 11010 |
| Ruggahawila | 11142 |
| Rukmale | 11129 |
| Seeduwa | 11410 |
| Siyambalape | 11607 |
| Talahena | 11504 |
| Thimbirigaskatuwa | 11532 |
| Tittapattara | 10664 |
| Udathuthiripitiya | 11054 |
| Udugampola | 11030 |
| Uggalboda | 11034 |
| Urapola | 11126 |
| Uswetakeiyawa | 11328 |
| Veyangoda | 11100 |
| Walgammulla | 11146 |
| Walpita | 11226 |
| Walpola (WP) | 11012 |
| Wanaluwewa | 11068 |
| Wathurugama | 11724 |
| Watinapaha | 11104 |
| Wattala | 11300 |
| Weboda | 11858 |
| Wegowwa | 11562 |
| Weliveriya | 11710 |
| Weweldeniya | 11894 |
| Yakkala | 11870 |
| Yatiyana(WP) | 11566 |
