| Derby - Property Tax Rates | FIPS Code=19035 |
| Year | Effective Tax Rate |
| 1970 | 1.99 |
| 1972 | 1.92 |
| 1974 | 2.04 |
| 1978 | 2.04 |
| Year | Effective Tax Rate | Municipal Tax Rate | School Tax Rate | |
| 1980 | 1.85 | 0.35 | 1.50 | |
| 1982 | 1.65 | 0.42 | 1.23 | |
| 1983 | 1.73 | Not Available | Not Available | |
| 1985 | 1.60 | Not Available | Not Available | |
| 1987 | 1.43 | Not Available | Not Available | |
| 1988 | 1.38 | 0.32 | 1.06 | |
| 1989 | 1.29 | 0.29 | 1.00 |
| Year | Effective Tax Rate | Municipal Tax Rate | School Tax Rate |
| 1990 | 1.47 | 0.40 | 1.07 |
| 1991 | 1.16 | 0.30 | 0.86 |
| 1993 | 1.02 | 0.26 | 0.76 |
| 1995 | 1.43 | 0.34 | 1.09 |
| 1997 | 1.39 | 0.28 | 1.11 |