Massachusetts · United States
Acton population
20,897people · latest figure
Acton has a population of 20,897, making it the 2138th largest place we list in United States. It is in Massachusetts.
Acton holds under a tenth of one per cent of United States's 349,035,494 people. New York City, the largest place we list there, is 421 times its size. Twenty years earlier the World Gazetteer recorded 20,897, almost unchanged.
The 2005 figure comes from the World Gazetteer archive restored on this site. The two sources may draw the settlement's boundary differently, so treat the change as indicative rather than exact. Why figures differ.
Acton is in Massachusetts, which has 477 recorded places.
Nearby in size
| Place | Region | Population |
|---|---|---|
| Makakilo-Makaīwa Hills-Kunia | Hawaii | 20,967 |
| Plainview | Texas | 20,919 |
| Grayslake | Illinois | 20,915 |
| Sanford | Maine | 20,893 |
| Silver Firs | Washington | 20,891 |
| Hauppauge | New York | 20,882 |
All places in United States → · Massachusetts →
Figures are the latest available in GeoNames (CC BY 4.0), which draws on national censuses of varying dates — treat them as recent, not same-year. Country totals are UN World Population Prospects 2024 (medium variant) where the UN lists the country separately; the handful it reports under a parent state keep a GeoNames figure and are marked as such. Sources & method.