21 Zip Codes in Guam

The average area for zip codes in Guam is 62.2 km² with the largest being 96915 in Santa Rita Village, Santa Rita Municipality at 228.6 km² and the smallest being 96932 in Agafo Gumas, Yigo Municipality at 0.477 km². In Guam the average population for a postal code is 18,660 with the most populated being zip code 96929 in Yigo Village, Yigo Municipality at 70,092. The average population density for a postal code in Guam is 584.6 / km² with the densest being zip code 96928 in Agat Village, Agat Municipality at 1,688 / km². The median age for postal codes in Guam range from 23.5 years old for 96916 in Merizo Village, Merizo Municipality to 32.9 years old for 96928 in Agat Village, Agat Municipality. The fastest growing postal code is 96913 in Barrigada Village, Barrigada Municipality with population growth of 20.2% from 2000 to 2015, an average of 1.2% per year.