| Westford - Population Change | FIPS Code=07080 |
| Absolute Population Change, 1970-1980 | 422 |
| Per Cent Population Change, 1970-1980 | 42.58 |
| Absolute Population Change, 1980-1990 | 327 |
| Per Cent Population Change, 1980-1990 | 23.14 |
| Population Estimate, 1996 | 1872 |
| Population Estimate, 2000 | 2148 |
| Population Estimate, 2005 | 2355 |
| Population Estimate, 2010 | 2514 |
| Population Estimate, 2015 | 2691 |
| Absolute Population Change, 1990-1996 | 32 |
| Per Cent Population Change, 1990-1996 | 7.59 |
| Absolute Population Change, 1996-2005 | 483 |
| Per Cent Population Change, 1996-2005 | 25.80 |
| Absolute Population Change, 2005-2015 | 336 |
| Per Cent Population Change, 2005-2015 | 14.27 |