The population of Guam is expected to grow by 1,000 in 2026 and reach 178,000 in 2027. Migration (including immigration and emigration) decreases population by 506 people yearly. The population density of Guam has changed from 192.8 in 1980 to 322.2 in 2024.
| Current population | 176,219 people at present (Monday 9th of February 2026) | |
| Median Age | 35.7 years |
| Population density | 326.8 per km2 |
| Year | Population | Year change | Migrants | Median age | Fertility rate | Density (Ppl/km2) | Urban population |
|---|---|---|---|---|---|---|---|
| 2026 | 176,000 | 1,000 (0.6%) | -506 | 35.7 | 327 | 168,000 (95.2%) | |
| 2025 | 175,000 | 1,000 (0.6%) | -506 | 35.5 | 2.19 | 325 | 167,000 (95.2%) |
| 2024 | 0 | 0 (0.0%) | -506 | 35.2 | 322 | 166,000 (95.1%) | |
| 2023 | 0 | 0 (0.0%) | -506 | 35.0 | 320 | 164,000 (95.1%) | |
| 2022 | 0 | 0 (0.0%) | -506 | 34.7 | 318 | 163,000 (95.0%) | |
| 2021 | 0 | 0 (0.0%) | -506 | 34.5 | 315 | 162,000 (94.9%) | |
| 2020 | 169,000 | 2,000 (1.2%) | -506 | 34.2 | 2.27 | 313 | 160,000 (94.9%) |
| 2019 | 0 | 0 (0.0%) | -506 | 34.0 | 2.29 | 310 | 159,000 (94.8%) |
| 2018 | 0 | 0 (0.0%) | -506 | 33.8 | 2.31 | 307 | 157,000 (94.7%) |
| 2017 | 0 | 0 (0.0%) | -506 | 33.5 | 2.33 | 304 | 155,000 (94.7%) |
| 2016 | 0 | 0 (0.0%) | -506 | 33.3 | 2.35 | 302 | 154,088 (94.6%) |
| 2015 | 161,797 | 830 (0.5%) | -506 | 33.0 | 2.37 | 300 | 152,924 (94.5%) |
| 2010 | 159,444 | 213 (0.1%) | -1,519 | 31.7 | 2.47 | 295 | 150,035 (94.1%) |
| 2005 | 158,402 | 303 (0.2%) | -1,955 | 30.3 | 2.64 | 293 | 148,313 (93.6%) |
| 2000 | 155,329 | 1,376 (0.9%) | -1,911 | 29.1 | 2.82 | 288 | 144,656 (93.1%) |
| 1995 | 145,561 | 2,759 (1.9%) | -823 | 28.0 | 2.87 | 270 | 133,996 (92.1%) |
| 1990 | 130,482 | 2,960 (2.3%) | 348 | 27.4 | 3.01 | 242 | 118,472 (90.8%) |
| 1985 | 116,572 | 2,611 (2.2%) | 20 | 26.3 | 3.10 | 216 | 107,641 (92.3%) |
| 1980 | 104,133 | 2,289 (2.2%) | 22 | 25.2 | 3.25 | 193 | 97,628 (93.8%) |
| 1975 | 93,352 | 1,975 (2.1%) | -302 | 24.3 | 3.80 | 173 | 78,072 (83.6%) |
| 1970 | 83,877 | 1,837 (2.2%) | -426 | 23.3 | 4.37 | 155 | 51,937 (61.9%) |
| 1965 | 74,830 | 1,779 (2.4%) | -288 | 23.2 | 5.44 | 139 | 41,567 (55.5%) |
| 1960 | 66,742 | 1,330 (2.0%) | -581 | 23.0 | 6.05 | 124 | 33,469 (50.1%) |
In 2025 the population of Guam was 175,000 and the average age increased from 23.0 in 1960 to 35.5. Urban population has increased from 144,656 (93.1%) in 2000 to 168,000 (95.2%) in the current year. The population density of Guam has changed from 192.8 in 1980 to 322.2 in 2024.
| Year | Population | Year change | Migrants | Median age | Fertility rate | Density (Ppl/km2) | Urban population |
|---|---|---|---|---|---|---|---|
| 2020 | 0 | 0 (0.0%) | -506 | 34.2 | 2.27 | 313 | 160,000 (94.9%) |
| 2025 | 0 | 0 (0.0%) | -506 | 35.5 | 2.19 | 325 | 167,000 (95.2%) |
| 2030 | 181,000 | 1,000 (0.6%) | -506 | 36.6 | 2.11 | 335 | 173,000 (95.5%) |
| 2035 | 186,000 | 1,000 (0.5%) | -506 | 37.8 | 2.05 | 344 | 178,000 (95.7%) |
| 2040 | 189,000 | 0 (0.0%) | -506 | 38.9 | 1.99 | 350 | 181,000 (95.9%) |
| 2045 | 191,000 | 0 (0.0%) | -506 | 40.0 | 1.94 | 355 | 184,000 (96.1%) |
| 2050 | 193,000 | 1,000 (0.5%) | -506 | 40.9 | 1.91 | 357 | 185,000 (96.3%) |
The life expectancy at birth should reach 85.4 (83.9 years for male and 86.9 years for females). Population density will go up to 356.8 people per square kilometer.
The demographics of Guam constitutes of 87,000 women and 89,000 men, which means there are 1,023 men per 1000 women. As far as age distribution goes, 30.1% of population (52,906) is 19 or younger, 57.3% of population (100,866) is between age 20 and 64 and 12.8% of population (22,510) is over 65.