The population of Guam is expected to grow by 1,000 in 2025 and reach 176,000 in 2026. Migration (including immigration and emigration) decreases population by 506 people yearly. On average there are 2,739 births and 997 deaths in Guam per year. Rate of natural increase is approximately 1.00 percent per year. The population density of Guam has changed from 192.8 in 1980 to 319.9 in 2023.
| Current population | 175,321 people at present (Sunday 27th of April 2025) | |
| Median Age | 35.5 years |
| Life expectancy | 81.2 years | |
| Population density | 324.5 per km2 |
| Year | Population | Year change | Migrants | Median age | Fertility rate | Density (Ppl/km2) | Urban population |
|---|---|---|---|---|---|---|---|
| 2025 | 175,000 | 1,000 (0.6%) | -506 | 35.5 | 2.19 | 325 | 167,000 (95.2%) |
| 2024 | 174,000 | 1,000 (0.6%) | -506 | 35.2 | 322 | 166,000 (95.1%) | |
| 2023 | 173,000 | 2,000 (1.2%) | -506 | 35.0 | 320 | 164,000 (95.1%) | |
| 2022 | 171,000 | 1,000 (0.6%) | -506 | 34.7 | 318 | 163,000 (95.0%) | |
| 2021 | 170,000 | 1,000 (0.6%) | -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 2024 the population of Guam was 174,000 and the average age increased from 23.0 in 1960 to 35.2. Urban population has increased from 144,656 (93.1%) in 2000 to 167,000 (95.2%) in the current year. The population density of Guam has changed from 192.8 in 1980 to 319.9 in 2023.
| 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 | 175,000 | 1,000 (0.6%) | -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, 30.2% of population (52,903) is 19 or younger, 57.5% of population (100,608) is between age 20 and 64 and 12.5% of population (21,788) is over 65.