| Kirby - Property Tax Rates | FIPS Code=5030 |
| Year | Effective Tax Rate |
| 1970 | 1.62 |
| 1972 | 2 |
| 1974 | 2.2 |
| 1978 | 1.74 |
| Year | Effective Tax Rate | Municipal Tax Rate | School Tax Rate | |
| 1980 | 1.67 | 0.42 | 1.25 | |
| 1982 | 2.12 | 0.77 | 1.35 | |
| 1983 | 1.75 | Not Available | Not Available | |
| 1985 | 1.82 | Not Available | Not Available | |
| 1987 | 1.73 | Not Available | Not Available | |
| 1988 | 1.98 | 0.66 | 1.32 | |
| 1989 | 1.78 | 0.45 | 1.33 |
| Year | Effective Tax Rate | Municipal Tax Rate | School Tax Rate |
| 1990 | 2.06 | 0.48 | 1.58 |
| 1991 | 2.2 | 0.48 | 1.72 |
| 1993 | 1.69 | 0.56 | 1.13 |
| 1995 | 2.19 | 0.56 | 1.63 |
| 1997 | 1.94 | 0.76 | 1.18 |