Demographics
| Historical populations | |||
|---|---|---|---|
| Census | Pop. | %± | |
| 1910 | 11,806 |
|
|
| 1920 | 13,275 | 12.4% | |
| 1930 | 18,509 | 39.4% | |
| 1940 | 22,290 | 20.4% | |
| 1950 | 59,498 | 166.9% | |
| 1960 | 67,044 | 12.7% | |
| 1970 | 84,996 | 26.8% | |
| 1980 | 105,979 | 24.7% | |
| 1990 | 133,152 | 25.6% | |
| 2000 | 154,805 | 16.3% | |
| 2010 | 159,358 | 2.9% | |
The largest ethnic group are the native Chamorros, accounting for 37.1% of the total population. Another 44,000 live outside the Marianas in California. Other significant ethnic groups include those of Filipino (25.5%), White (10%), often of Spanish and European American ancestry. The rest are of Chinese, Japanese and Korean ancestry. Roman Catholicism is the predominant religion, with 85% of the population claiming an affiliation with it.
While the population of Guam increased only by 2.9% from 2000 to 2010, the programmed U.S. military buildup (2010–14) will cause an unprecedented surge of approximately 40% or nearly 80,000 people at the peak of constructions.
The official languages of the island are English and Chamorro.
Read more about this topic: Guam