Administrative divisions of Guam
Guam is divided into 1 first-level administrative divisions:
Largest cities in Guam
| # | City | Population |
|---|---|---|
| 1 | Agana | 122,411 |
Agana is the largest urban area in Guam with about 122,411 people.
Terrain, rivers & lakes
Highest terrain in Guam: ≈ 398 m — read from the global elevation model, so summit heights are approximate. The physical map paints elevation bands from green lowlands to brown highlands.
No major named rivers or lakes are mapped for Guam at this map scale.
Ethnic groups in Guam
Native Hawaiian and other Pacific Islander 46.1% (Chamorro 32.8%, Chuukese 6.7%, Palauan 1.4%, Pohnpeian 1.4%, Yapese 1%, other Native Hawaiian and other Pacific Islander 2.8%), Asian 35.5% (Filipino 29.1%, Korean 2.2%, Japanese 1.4%, Chinese (except Taiwanese) 1.3%, other Asian 1.5%), White 6.8%, African descent or African-American 0.9%, Indigenou
Regionally, Native Hawaiian and other Pacific Islander is the most common ethnic group across most of the 1 divisions.
Source: CIA World Factbook (2020 est.) · regional dominance compiled by Glostats from censuses and surveys
Religions in Guam
Christian (predominantly Roman Catholic) 94.2%, folk religions 1.5%, Buddhist 1.1%, other 1.6%, unaffiliated 1.7% (2020 est.)
Regionally, Christian is the most common religious group across most of the 1 divisions.
Source: CIA World Factbook (2020 est.) · regional dominance compiled by Glostats from censuses and surveys
Languages in Guam
English 43.3%, Filipino 24.9%, Chamorro 16%, other Pacific Island languages 9.4%, Asian languages 6.5% (2020 est.)
Regionally, English is the most common language group across most of the 1 divisions.
Source: CIA World Factbook (2020 est.) · regional dominance compiled by Glostats from censuses and surveys
Explore more
Sources: boundaries, cities, rivers and lakes from Natural Earth (public domain, 1:10m); elevation from the AWS Open Data terrain tiles (SRTM/GMTED); ethnic, religious and language shares from the CIA World Factbook; regional dominance compiled by Glostats from national censuses and surveys. Page generated 2026-10-19. More about our data.