| Grafton Town - Property Tax Rates | FIPS Code=25030 |
| Year | Effective Tax Rate |
| 1970 | 1.21 |
| 1972 | 1.17 |
| 1974 | 0.94 |
| 1978 | 1.24 |
| Year | Effective Tax Rate | Municipal Tax Rate | School Tax Rate | |
| 1980 | 1.30 | 0.59 | 0.71 | |
| 1982 | 1.27 | 0.36 | 0.91 | |
| 1983 | 1.22 | Not Available | Not Available | |
| 1985 | 1.41 | Not Available | Not Available | |
| 1987 | 1.44 | Not Available | Not Available | |
| 1988 | 1.50 | 0.57 | 0.93 | |
| 1989 | 1.25 | 0.46 | 0.79 |
| Year | Effective Tax Rate | Municipal Tax Rate | School Tax Rate |
| 1990 | 1.14 | 0.39 | 0.75 |
| 1991 | 1.43 | 0.48 | 0.95 |
| 1993 | 1.59 | 0.51 | 1.08 |
| 1995 | 1.49 | 0.55 | 0.94 |
| 1997 | 1.78 | 0.59 | 1.19 |