| Westford - Property Tax Rates | FIPS Code=7080 |
| Year | Effective Tax Rate |
| 1970 | 3.46 |
| 1972 | 2.62 |
| 1974 | 2.5 |
| 1978 | 2.06 |
| Year | Effective Tax Rate | Municipal Tax Rate | School Tax Rate | |
| 1980 | 3.42 | 2 | 1.42 | |
| 1982 | 2.36 | 0.83 | 1.53 | |
| 1983 | 1.92 | Not Available | Not Available | |
| 1985 | 2.09 | Not Available | Not Available | |
| 1987 | 2 | Not Available | Not Available | |
| 1988 | 3.53 | 2.05 | 1.48 | |
| 1989 | 3 | 1.76 | 1.24 |
| Year | Effective Tax Rate | Municipal Tax Rate | School Tax Rate |
| 1990 | 2.11 | 0.78 | 1.33 |
| 1991 | 1.82 | 0.55 | 1.27 |
| 1993 | 2.11 | 0.58 | 1.53 |
| 1995 | 2.2 | 0.58 | 1.62 |
| 1997 | 2.14 | 0.55 | 1.59 |