年齢三区分別人口
(住民基本台帳)
単位: 人、%
| 年度 | 人口 総数 |
三区分 | |||||
| 0〜14歳 | % | 15〜64歳 | % | 65歳以上 | % | ||
| 昭和55 | 8,947 | 1,662 | 18.6 | 6,041 | 67.5 | 1,244 | 13.9 |
| 56 | 8,897 | 1,679 | 18.9 | 5,957 | 67.0 | 1,261 | 14.2 |
| 57 | 8,931 | 1,701 | 19.0 | 5,916 | 66.2 | 1,314 | 14.7 |
| 58 | 8,947 | 1,690 | 18.9 | 5,880 | 65.7 | 1,377 | 15.4 |
| 59 | 8,883 | 1,678 | 18.9 | 5,784 | 65.1 | 1,421 | 16.0 |
| 60 | 8,818 | 1,646 | 18.7 | 5,721 | 64.9 | 1,451 | 16.5 |
| 61 | 8,786 | 1,655 | 18.8 | 5,643 | 64.2 | 1,488 | 16.9 |
| 62 | 8,740 | 1,608 | 18.4 | 5,606 | 64.1 | 1,526 | 17.5 |
| 63 | 8,769 | 1,573 | 17.9 | 5,547 | 63.3 | 1,649 | 18.8 |
| 平成元 | 8,776 | 1,552 | 17.7 | 5,495 | 62.6 | 1,729 | 19.7 |
| 2 | 8,759 | 1,516 | 17.3 | 5,415 | 61.8 | 1,828 | 20.9 |
| 3 | 8,722 | 1,481 | 17.0 | 5,319 | 61.0 | 1,922 | 22.0 |
| 4 | 8,675 | 1,458 | 16.8 | 5,227 | 60.3 | 1,990 | 22.9 |
| 5 | 8,632 | 1,410 | 16.3 | 5,157 | 59.7 | 2,065 | 23.9 |
| 6 | 8,582 | 1,354 | 15.8 | 5,114 | 59.6 | 2,114 | 24.6 |
| 7 | 8,567 | 1,323 | 15.4 | 5,071 | 59.2 | 2,173 | 25.4 |
| 8 | 8,475 | 1,264 | 14.9 | 4,988 | 58.9 | 2,223 | 26.2 |
| 9 | 8,434 | 1,196 | 14.2 | 4,929 | 58.4 | 2,309 | 27.4 |
| 10 | 8,341 | 1,127 | 13.5 | 4,855 | 58.2 | 2,359 | 28.3 |
| 11 | 8,260 | 1,092 | 13.2 | 4,773 | 57.8 | 2,395 | 29.0 |
| 12 | 8,158 | 1,059 | 13.0 | 4,681 | 57.4 | 2,418 | 29.6 |
| 13 | 8,055 | 1,010 | 12.5 | 4,605 | 57.2 | 2,440 | 30.3 |
| 14 | 7,988 | 980 | 12.3 | 4,536 | 56.8 | 2,472 | 30.9 |
| 15 | 7,879 | 935 | 11.9 | 4,489 | 57.0 | 2,455 | 31.1 |