Gampaha Postal Code
Here is a list of postal codes that you can refer to and copy for your use.
11536 - Akaragama
11122 - Alawala
11052 - Ambagaspitiya
11212 - Ambepussa
11558 - Andiambalama
11120 - Attanagalla
11538 - Badalgama
11244 - Banduragoda
11011 - Batuwatta
11040 - Bemmulla
11650 - Biyagama
11672 - Biyagama Ipz
11216 - Bokalagama
11024 - Bollete
11134 - Bopagama
11720 - Buthpitiya
11524 - Dagonna
11896 - Danowita
11889 - Debahera
11690 - Dekatana
11700 - Delgoda
11228 - Delwagura
11692 - Demalagama
11270 - Demanhandiya
11102 - Dewalapola
11250 - Divulapitiya
11208 - Divuldeniya
11680 - Dompe
11264 - Dunagaha
11380 - Ekala
11350 - Ela
11116 - Ellakkala
11108 - Essella
11000 - Gampaha
11020 - Ganemulla
11630 - Gonawalawp
11618 - Heiyanthuduwa
11715 - Henegama
11568 - Hinatiyana
11734 - Hiswella
11564 - Horampella
11262 - Hunumulla
11265 - Ihala Madampella
11856 - Imbulgoda
11850 - Kadawatha
11144 - Kahatowita
11875 - Kalagedihena
11160 - Kaleliya
11224 - Kaluaggala
11320 - Kandana
10662 - Kapugoda
11600 - Kelaniya
11204 - Loluwagoda
11062 - Lunugama
11114 - Mabodale
11033 - Madelgamuwa
11358 - Makewita
11640 - Makola
11670 - Malwana
11061 - Mandawala
11260 - Marandagahamula
11234 - Mellawagedara
11150 - Pallewela
11370 - Pamunugama
11214 - Pamunuwatta
11890 - Pasyala
11830 - Peliyagoda
11741 - Pepiliyawala
11043 - Pethiyagoda
11324 - Polpithimukulana
10660 - Pugoda
11892 - Radawadunna
11725 - Radawana
11400 - Raddolugama
11010 - Ragama
11142 - Ruggahawila
11129 - Rukmale
11410 - Seeduwa
11607 - Siyambalape
11504 - Talahena
11532 - Thimbirigaskatuwa
10664 - Tittapattara
11054 - Udathuthiripitiya
11030 - Udugampola
11034 - Uggalboda
11126 - Urapola
11328 - Uswetakeiyawa
11100 - Veyangoda
11146 - Walgammulla
11226 - Walpita
11012 - Walpola (wp)
11068 - Wanaluwewa
11724 - Wathurugama
11104 - Watinapaha
11300 - Wattala
11858 - Weboda
11870 - Yakkala
11566 - Yatiyana(wp)