US Territory

Guam

Guam was first settled around 2000 BC by Austronesian people known as the Chamorro Peoples, who developed a pre-contact society on the island. The Spanish colonized Guam in the 17th century, establishing the longest colonial history among the Pacific islands. American control of Guam began following the 1898 Spanish–American War and continues to the present day.

Historic sites
135

Pre-contact era

The history of Guam begins with the early arrival around 2000 BC of Austronesian people known today as the Chamorro Peoples. The Chamorros developed a pre-contact society on the island before European colonization. Guam's history of colonialism is noted as the longest among the Pacific islands.

Colonial history

The source text does not provide a precise year for the start of Spanish colonization, only that it occurred in the 17th century.

American rule continues to the present day. Guam remains a U.S. territory.

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The Land
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Geology
The bedrock beneath the site, its age and rock type, reaching back millions of years.
LiDAR Terrain
Laser-scanned terrain that reveals earthworks and old features hidden in the landscape.
Conflict & War
The battles, raids and skirmishes fought near here, across every era of American conflict.
The Civil War
The Civil War on this ground, 1861 to 1865: who held it, and the battles, camps and regiments nearby.
The Soldiers
The men who marched from here in the Civil War, named and traced where the record allows.
Native Heritage
The Native nations who held this land, mapped across time from before European contact to today.
Settlement
Who claimed and held this ground, from Indigenous homelands through the colonial powers to the United States.
The Community
How the town grew, who came, and what kind of place it became, traced through the census record.
Rivers & Rail
The rivers, canals and railroads that connected this place between 1830 and 1911.
Notable People
The people born, buried or genuinely tied to this exact place, with their stories.
Historical Maps
Historic maps of the location layered over how it looks today.
Finds & Access
Museum objects tied to the area, and the laws on searching, collecting and access here.
Literature
The old books, county histories and archives that mention this place, quoted with their sources.
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Explore Guam records

135
National Register historic sites
National Register listings ›
1
Indigenous groups
Heritage records ›
13
Colonial-era events
1492 to early statehood ›
Guam counties
Census population history ›
Sources

State history content adapted from Wikipedia under the Creative Commons Attribution-ShareAlike 4.0 International License. Historic sites data: National Register of Historic Places, National Park Service (public domain).

About Guam

When did Guam become a state?
Guam is a US territory, not a state.
What European powers colonized Guam?
The territory that became Guam passed through several colonial periods. The source text does not provide a precise year for the start of Spanish colonization, only that it occurred in the 17th century. American rule continues to the present day. Guam remains a U.S. territory.
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