| Year | Number of households (thousands) |
Percent of all house- holds |
Median income | House- holder poverty rate |
Percent with specified level of relative income |
Value | SE | Low | Middle | High |
|---|---|---|---|---|---|---|---|---|
| 1969 | 3,422 | 5.4 | $15,929 | $291 | 22.8 | 28.7 | 62.4 | 8.9 |
| 1970 | 3,512 | 5.5 | $15,800 | $295 | 23.2 | 30.8 | 60.4 | 8.8 |
| 1971 | 3,726 | 5.6 | $16,120 | $319 | 24.7 | 31.4 | 59.3 | 9.3 |
| 1972 | 3,847 | 5.6 | $16,683 | $316 | 23.3 | 31.4 | 59.8 | 8.8 |
| 1973 | 4,138 | 5.9 | $17,296 | $285 | 21.4 | 30.4 | 62.5 | 7.1 |
| 1974 | 4,333 | 6.1 | $17,368 | $252 | 19.0 | 29.5 | 63.5 | 7.0 |
| 1975 | 4,431 | 6.1 | $16,751 | $301 | 21.6 | 30.6 | 61.7 | 7.7 |
| 1976 | 4,754 | 6.4 | $17,230 | $285 | 21.8 | 30.9 | 61.8 | 7.3 |
| 1977 | 5,001 | 6.5 | $17,564 | $281 | 20.6 | 29.4 | 63.0 | 7.5 |
| 1978 | 5,143 | 6.5 | $18,503 | $314 | 19.8 | 29.3 | 63.3 | 7.4 |
| 1979 | 5,489 | 6.8 | $18,366 | $310 | 19.7 | 28.7 | 64.9 | 6.4 |
| 1980 | 5,649 | 6.9 | $19,064 | $311 | 19.9 | 27.3 | 65.3 | 7.3 |
| 1981 | 5,692 | 6.8 | $18,683 | $305 | 20.3 | 27.0 | 64.4 | 8.6 |
| 1982 | 5,566 | 6.6 | $19,695 | $333 | 20.0 | 27.0 | 63.2 | 9.8 |
| 1983 | 6,034 | 7.1 | $20,440 | $372 | 19.2 | 25.1 | 64.3 | 10.7 |
| 1984 | 6,183 | 7.1 | $20,293 | $367 | 19.2 | 26.1 | 63.5 | 10.5 |
| 1985 | 6,256 | 7.1 | $20,473 | $373 | 19.2 | 26.1 | 63.4 | 10.6 |
| 1986 | 6,172 | 6.9 | $20,774 | $338 | 20.5 | 28.2 | 60.9 | 10.8 |
| 1987 | 6,367 | 7.0 | $21,289 | $393 | 18.6 | 28.1 | 61.3 | 10.7 |
| 1988 | 6,581 | 7.1 | $22,878 | $404 | 17.5 | 24.9 | 62.7 | 12.4 |
| 1989 | 6,716 | 7.2 | $22,776 | $468 | 17.2 | 25.4 | 62.6 | 12.0 |
| 1990 | 6,770 | 7.2 | $23,409 | $514 | 18.2 | 25.4 | 62.4 | 12.2 |
| 1991 | 6,924 | 7.2 | $21,921 | $392 | 17.7 | 25.1 | 61.0 | 13.9 |
| 1992 | 6,808 | 7.1 | $21,701 | $394 | 18.7 | 26.0 | 61.9 | 12.0 |
| 1993 | 6,963 | 7.2 | $21,550 | $377 | 19.9 | 26.8 | 59.9 | 13.3 |
| 1994 | 7,032 | 7.1 | $21,177 | $323 | 19.6 | 27.2 | 59.1 | 13.7 |
| 1995 | 7,096 | 7.1 | $21,426 | $376 | 18.5 | 27.2 | 58.9 | 13.8 |
| 1996 | 7,358 | 7.3 | $21,432 | $387 | 18.9 | 26.7 | 59.2 | 14.1 |
Source: U. S. Bureau of the Census, March Current Population Surveys.