茨城県石岡市| 項目名 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0-4歳 | 4,097 | 4,017 | 3,965 | 3,935 | 3,882 | 3,779 | 3,784 | 3,775 | 3,700 | 3,741 | 3,653 | 3,553 | 3,394 | 3,176 | 3,041 | 2,915 | 2,816 | 2,743 | 2,712 | 2,668 | 2,583 | 2,591 | 2,555 | 2,513 | 2,455 |
| 構成比（%） | 4.9 | 4.8 | 4.7 | 4.7 | 4.6 | 4.5 | 4.5 | 4.5 | 4.4 | 4.5 | 4.4 | 4.3 | 4.1 | 3.9 | 3.7 | 3.6 | 3.5 | 3.5 | 3.4 | 3.4 | 3.3 | 3.3 | 3.3 | 3.3 | 3.3 |
| 5-9歳 | 4,741 | 4,558 | 4,368 | 4,311 | 4,251 | 4,267 | 4,175 | 4,049 | 4,043 | 3,942 | 3,884 | 3,848 | 3,787 | 3,684 | 3,643 | 3,539 | 3,411 | 3,281 | 3,139 | 3,071 | 2,988 | 2,882 | 2,783 | 2,736 | 2,695 |
| 構成比（%） | 5.7 | 5.4 | 5.2 | 5.1 | 5.1 | 5.1 | 5.0 | 4.8 | 4.8 | 4.7 | 4.6 | 4.6 | 4.6 | 4.5 | 4.5 | 4.4 | 4.3 | 4.1 | 4.0 | 3.9 | 3.8 | 3.7 | 3.6 | 3.6 | 3.6 |
| 10-14歳 | 5,439 | 5,418 | 5,304 | 5,088 | 4,957 | 4,772 | 4,592 | 4,402 | 4,312 | 4,224 | 4,217 | 4,154 | 4,056 | 4,043 | 3,901 | 3,813 | 3,770 | 3,675 | 3,606 | 3,579 | 3,534 | 3,429 | 3,365 | 3,173 | 3,032 |
| 構成比（%） | 6.5 | 6.5 | 6.3 | 6.1 | 5.9 | 5.7 | 5.5 | 5.3 | 5.1 | 5.0 | 5.0 | 5.0 | 4.9 | 4.9 | 4.8 | 4.7 | 4.7 | 4.6 | 4.5 | 4.5 | 4.5 | 4.4 | 4.4 | 4.2 | 4.0 |
| 15-19歳 | 5,761 | 5,613 | 5,509 | 5,465 | 5,414 | 5,297 | 5,249 | 5,212 | 4,985 | 4,882 | 4,693 | 4,514 | 4,384 | 4,276 | 4,190 | 4,181 | 4,091 | 4,013 | 4,010 | 3,934 | 3,797 | 3,779 | 3,653 | 3,628 | 3,571 |
| 構成比（%） | 6.9 | 6.7 | 6.6 | 6.5 | 6.4 | 6.3 | 6.3 | 6.2 | 6.0 | 5.8 | 5.6 | 5.4 | 5.3 | 5.2 | 5.2 | 5.2 | 5.1 | 5.1 | 5.1 | 5.0 | 4.9 | 4.9 | 4.8 | 4.8 | 4.7 |
| 20-24歳 | 5,906 | 5,894 | 5,836 | 5,660 | 5,344 | 5,218 | 5,148 | 5,117 | 5,033 | 4,967 | 4,807 | 4,777 | 4,646 | 4,509 | 4,361 | 4,245 | 4,048 | 3,919 | 3,911 | 3,836 | 3,815 | 3,744 | 3,648 | 3,589 | 3,495 |
| 構成比（%） | 7.1 | 7.0 | 7.0 | 6.7 | 6.4 | 6.2 | 6.1 | 6.1 | 6.0 | 5.9 | 5.8 | 5.7 | 5.6 | 5.5 | 5.4 | 5.3 | 5.1 | 5.0 | 4.9 | 4.9 | 4.9 | 4.8 | 4.8 | 4.7 | 4.6 |
| 25-29歳 | 5,068 | 5,235 | 5,500 | 5,591 | 5,757 | 5,761 | 5,691 | 5,633 | 5,539 | 5,295 | 5,111 | 4,892 | 4,777 | 4,532 | 4,552 | 4,338 | 4,216 | 4,092 | 3,980 | 3,986 | 3,780 | 3,598 | 3,534 | 3,387 | 3,274 |
| 構成比（%） | 6.1 | 6.3 | 6.6 | 6.7 | 6.9 | 6.9 | 6.8 | 6.7 | 6.6 | 6.3 | 6.1 | 5.9 | 5.8 | 5.5 | 5.6 | 5.4 | 5.3 | 5.2 | 5.0 | 5.1 | 4.8 | 4.6 | 4.6 | 4.5 | 4.4 |
| 30-34歳 | 4,807 | 4,775 | 4,706 | 4,902 | 5,031 | 5,142 | 5,195 | 5,392 | 5,471 | 5,647 | 5,711 | 5,627 | 5,489 | 5,304 | 4,968 | 4,790 | 4,591 | 4,430 | 4,333 | 4,251 | 4,206 | 4,036 | 3,896 | 3,786 | 3,676 |
| 構成比（%） | 5.8 | 5.7 | 5.6 | 5.8 | 6.0 | 6.1 | 6.2 | 6.4 | 6.5 | 6.7 | 6.8 | 6.8 | 6.6 | 6.5 | 6.1 | 5.9 | 5.7 | 5.6 | 5.5 | 5.4 | 5.4 | 5.2 | 5.1 | 5.0 | 4.9 |
| 35-39歳 | 5,397 | 5,263 | 5,143 | 5,035 | 5,039 | 4,871 | 4,841 | 4,754 | 4,983 | 5,060 | 5,147 | 5,224 | 5,376 | 5,366 | 5,390 | 5,486 | 5,425 | 5,270 | 5,180 | 4,999 | 4,782 | 4,555 | 4,396 | 4,236 | 4,135 |
| 構成比（%） | 6.5 | 6.3 | 6.1 | 6.0 | 6.0 | 5.8 | 5.8 | 5.7 | 5.9 | 6.0 | 6.2 | 6.3 | 6.5 | 6.5 | 6.6 | 6.8 | 6.8 | 6.7 | 6.5 | 6.3 | 6.1 | 5.9 | 5.7 | 5.6 | 5.5 |
| 40-44歳 | 6,535 | 6,326 | 6,086 | 5,845 | 5,571 | 5,424 | 5,283 | 5,137 | 4,993 | 4,992 | 4,886 | 4,878 | 4,784 | 4,958 | 4,961 | 4,996 | 5,059 | 5,222 | 5,317 | 5,402 | 5,423 | 5,401 | 5,333 | 5,148 | 4,910 |
| 構成比（%） | 7.8 | 7.6 | 7.3 | 7.0 | 6.6 | 6.5 | 6.3 | 6.1 | 6.0 | 6.0 | 5.8 | 5.9 | 5.8 | 6.0 | 6.1 | 6.2 | 6.3 | 6.6 | 6.7 | 6.8 | 6.9 | 7.0 | 6.9 | 6.8 | 6.5 |
| 45-49歳 | 6,591 | 7,133 | 7,129 | 6,979 | 6,781 | 6,483 | 6,297 | 6,047 | 5,804 | 5,538 | 5,394 | 5,253 | 5,126 | 4,968 | 4,971 | 4,855 | 4,790 | 4,673 | 4,979 | 5,002 | 5,031 | 5,046 | 5,327 | 5,311 | 5,339 |
| 構成比（%） | 7.9 | 8.5 | 8.5 | 8.3 | 8.1 | 7.7 | 7.5 | 7.2 | 6.9 | 6.6 | 6.5 | 6.3 | 6.2 | 6.1 | 6.1 | 6.0 | 6.0 | 5.9 | 6.3 | 6.3 | 6.4 | 6.5 | 6.9 | 7.0 | 7.1 |
| 50-54歳 | 5,814 | 5,464 | 5,574 | 5,876 | 6,122 | 6,514 | 7,037 | 7,022 | 6,867 | 6,676 | 6,396 | 6,212 | 5,957 | 5,728 | 5,444 | 5,286 | 5,147 | 5,068 | 4,988 | 4,976 | 4,897 | 4,914 | 4,648 | 4,833 | 4,907 |
| 構成比（%） | 7.0 | 6.5 | 6.7 | 7.0 | 7.3 | 7.8 | 8.4 | 8.4 | 8.2 | 8.0 | 7.7 | 7.5 | 7.2 | 7.0 | 6.7 | 6.5 | 6.4 | 6.4 | 6.3 | 6.3 | 6.3 | 6.3 | 6.1 | 6.4 | 6.5 |
| 55-59歳 | 5,211 | 5,296 | 5,468 | 5,503 | 5,700 | 5,733 | 5,370 | 5,473 | 5,773 | 6,033 | 6,407 | 6,931 | 6,928 | 6,765 | 6,539 | 6,275 | 6,078 | 5,836 | 5,665 | 5,453 | 5,274 | 5,109 | 4,987 | 4,889 | 4,889 |
| 構成比（%） | 6.2 | 6.3 | 6.5 | 6.6 | 6.8 | 6.8 | 6.4 | 6.5 | 6.9 | 7.2 | 7.7 | 8.3 | 8.4 | 8.3 | 8.0 | 7.8 | 7.6 | 7.4 | 7.1 | 6.9 | 6.7 | 6.6 | 6.5 | 6.4 | 6.5 |
| 60-64歳 | 5,072 | 5,044 | 5,091 | 5,077 | 5,058 | 5,061 | 5,155 | 5,339 | 5,380 | 5,593 | 5,638 | 5,286 | 5,365 | 5,686 | 5,908 | 6,238 | 6,730 | 6,692 | 6,590 | 6,413 | 6,205 | 5,995 | 5,820 | 5,530 | 5,274 |
| 構成比（%） | 6.1 | 6.0 | 6.1 | 6.0 | 6.0 | 6.0 | 6.1 | 6.4 | 6.4 | 6.7 | 6.7 | 6.4 | 6.5 | 6.9 | 7.3 | 7.7 | 8.4 | 8.5 | 8.3 | 8.1 | 7.9 | 7.7 | 7.6 | 7.3 | 7.0 |
| 65-69歳 | 4,565 | 4,697 | 4,716 | 4,819 | 4,798 | 4,822 | 4,810 | 4,855 | 4,856 | 4,844 | 4,874 | 4,968 | 5,149 | 5,185 | 5,401 | 5,427 | 5,088 | 5,157 | 5,450 | 5,625 | 5,855 | 6,347 | 6,523 | 6,452 | 6,214 |
| 構成比（%） | 5.5 | 5.6 | 5.6 | 5.7 | 5.7 | 5.8 | 5.7 | 5.8 | 5.8 | 5.8 | 5.8 | 6.0 | 6.2 | 6.3 | 6.6 | 6.7 | 6.4 | 6.5 | 6.9 | 7.1 | 7.5 | 8.2 | 8.5 | 8.5 | 8.3 |
| 70-74歳 | 3,382 | 3,610 | 3,821 | 4,004 | 4,095 | 4,191 | 4,328 | 4,324 | 4,434 | 4,462 | 4,477 | 4,461 | 4,514 | 4,542 | 4,518 | 4,576 | 4,658 | 4,825 | 4,888 | 5,070 | 5,200 | 4,905 | 4,847 | 5,052 | 5,327 |
| 構成比（%） | 4.1 | 4.3 | 4.6 | 4.8 | 4.9 | 5.0 | 5.2 | 5.2 | 5.3 | 5.3 | 5.4 | 5.4 | 5.5 | 5.5 | 5.6 | 5.7 | 5.8 | 6.1 | 6.2 | 6.4 | 6.6 | 6.3 | 6.3 | 6.6 | 7.1 |
| 75-79歳 | 2,338 | 2,432 | 2,506 | 2,620 | 2,806 | 2,997 | 3,183 | 3,383 | 3,537 | 3,669 | 3,729 | 3,824 | 3,842 | 3,922 | 3,915 | 3,945 | 4,003 | 4,042 | 4,087 | 4,095 | 4,150 | 4,229 | 4,355 | 4,484 | 4,634 |
| 構成比（%） | 2.8 | 2.9 | 3.0 | 3.1 | 3.3 | 3.6 | 3.8 | 4.0 | 4.2 | 4.4 | 4.5 | 4.6 | 4.7 | 4.8 | 4.8 | 4.9 | 5.0 | 5.1 | 5.2 | 5.2 | 5.3 | 5.5 | 5.7 | 5.9 | 6.2 |
| 80歳以上 | 2,693 | 2,903 | 3,055 | 3,233 | 3,373 | 3,514 | 3,686 | 3,846 | 4,040 | 4,263 | 4,537 | 4,791 | 5,049 | 5,307 | 5,563 | 5,821 | 6,062 | 6,229 | 6,441 | 6,509 | 6,701 | 6,919 | 7,098 | 7,315 | 7,437 |
| 構成比（%） | 3.2 | 3.5 | 3.6 | 3.9 | 4.0 | 4.2 | 4.4 | 4.6 | 4.8 | 5.1 | 5.4 | 5.8 | 6.1 | 6.5 | 6.8 | 7.2 | 7.6 | 7.9 | 8.1 | 8.3 | 8.6 | 8.9 | 9.2 | 9.6 | 9.9 |
人口増加都市
