| Westfield - Property Tax Rates | FIPS Code=19090 |
| Year | Effective Tax Rate |
| 1970 | 0.93 |
| 1972 | 1.59 |
| 1974 | 1.06 |
| 1978 | 1.12 |
| Year | Effective Tax Rate | Municipal Tax Rate | School Tax Rate | |
| 1980 | 1.41 | 0.39 | 1.02 | |
| 1982 | 1.18 | 0.32 | 0.86 | |
| 1983 | 1.69 | Not Available | Not Available | |
| 1985 | 1.70 | Not Available | Not Available | |
| 1987 | 1.64 | Not Available | Not Available | |
| 1988 | 1.17 | 0.27 | 0.90 | |
| 1989 | 1.19 | 0.27 | 0.92 |
| Year | Effective Tax Rate | Municipal Tax Rate | School Tax Rate |
| 1990 | 1.32 | 0.28 | 1.04 |
| 1991 | 1.00 | 0.22 | 0.78 |
| 1993 | 1.50 | 0.23 | 1.27 |
| 1995 | 1.53 | 0.25 | 1.28 |
| 1997 | 1.67 | 0.25 | 1.42 |