千葉県南房総市| 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 | 1,830 | 1,754 | 1,679 | 1,647 | 1,601 | 1,540 | 1,504 | 1,429 | 1,399 | 1,373 | 1,322 | 1,305 | 1,299 | 1,258 | 1,199 | 1,149 | 1,089 | 1,073 | 1,055 | 1,061 | 1,048 | 1,005 | 972 | 902 | 843 |
| 構成比（%） | 3.6 | 3.5 | 3.4 | 3.3 | 3.3 | 3.2 | 3.1 | 3.0 | 3.0 | 2.9 | 2.9 | 2.9 | 2.9 | 2.8 | 2.7 | 2.6 | 2.5 | 2.5 | 2.5 | 2.5 | 2.6 | 2.5 | 2.4 | 2.3 | 2.2 |
| 5-9歳 | 2,316 | 2,221 | 2,148 | 2,106 | 2,044 | 1,987 | 1,935 | 1,861 | 1,798 | 1,751 | 1,644 | 1,621 | 1,534 | 1,516 | 1,467 | 1,420 | 1,392 | 1,342 | 1,320 | 1,294 | 1,269 | 1,212 | 1,177 | 1,145 | 1,129 |
| 構成比（%） | 4.6 | 4.4 | 4.3 | 4.3 | 4.2 | 4.1 | 4.0 | 3.9 | 3.8 | 3.7 | 3.6 | 3.5 | 3.4 | 3.4 | 3.3 | 3.3 | 3.2 | 3.2 | 3.1 | 3.1 | 3.1 | 3.0 | 3.0 | 2.9 | 2.9 |
| 10-14歳 | 2,918 | 2,799 | 2,734 | 2,608 | 2,491 | 2,378 | 2,265 | 2,166 | 2,112 | 2,039 | 1,978 | 1,912 | 1,847 | 1,794 | 1,722 | 1,628 | 1,609 | 1,527 | 1,495 | 1,476 | 1,442 | 1,436 | 1,422 | 1,385 | 1,318 |
| 構成比（%） | 5.8 | 5.6 | 5.5 | 5.3 | 5.1 | 4.9 | 4.7 | 4.6 | 4.5 | 4.4 | 4.3 | 4.2 | 4.1 | 4.0 | 3.9 | 3.7 | 3.7 | 3.6 | 3.6 | 3.5 | 3.5 | 3.6 | 3.6 | 3.5 | 3.4 |
| 15-19歳 | 2,962 | 2,865 | 2,762 | 2,681 | 2,615 | 2,532 | 2,492 | 2,404 | 2,273 | 2,162 | 2,056 | 1,982 | 1,936 | 1,885 | 1,818 | 1,815 | 1,754 | 1,671 | 1,626 | 1,610 | 1,519 | 1,493 | 1,438 | 1,404 | 1,399 |
| 構成比（%） | 5.9 | 5.7 | 5.6 | 5.4 | 5.3 | 5.2 | 5.2 | 5.1 | 4.8 | 4.6 | 4.4 | 4.3 | 4.3 | 4.2 | 4.1 | 4.2 | 4.1 | 3.9 | 3.9 | 3.9 | 3.7 | 3.7 | 3.6 | 3.6 | 3.6 |
| 20-24歳 | 2,075 | 2,077 | 2,024 | 2,017 | 1,907 | 1,880 | 1,840 | 1,779 | 1,752 | 1,724 | 1,678 | 1,620 | 1,550 | 1,426 | 1,350 | 1,331 | 1,347 | 1,322 | 1,347 | 1,345 | 1,332 | 1,243 | 1,209 | 1,155 | 1,113 |
| 構成比（%） | 4.1 | 4.2 | 4.1 | 4.1 | 3.9 | 3.9 | 3.8 | 3.7 | 3.7 | 3.7 | 3.6 | 3.5 | 3.4 | 3.2 | 3.1 | 3.1 | 3.1 | 3.1 | 3.2 | 3.2 | 3.2 | 3.1 | 3.0 | 3.0 | 2.9 |
| 25-29歳 | 1,972 | 1,986 | 2,106 | 2,061 | 2,103 | 2,083 | 2,026 | 1,965 | 1,921 | 1,826 | 1,777 | 1,753 | 1,657 | 1,599 | 1,495 | 1,429 | 1,351 | 1,302 | 1,287 | 1,227 | 1,133 | 1,073 | 1,023 | 982 | 984 |
| 構成比（%） | 3.9 | 4.0 | 4.2 | 4.2 | 4.3 | 4.3 | 4.2 | 4.1 | 4.1 | 3.9 | 3.8 | 3.8 | 3.7 | 3.6 | 3.4 | 3.3 | 3.1 | 3.1 | 3.1 | 2.9 | 2.8 | 2.7 | 2.6 | 2.5 | 2.6 |
| 30-34歳 | 2,118 | 2,071 | 1,951 | 1,992 | 2,039 | 2,070 | 2,107 | 2,138 | 2,132 | 2,191 | 2,143 | 2,078 | 2,006 | 1,948 | 1,831 | 1,752 | 1,717 | 1,646 | 1,644 | 1,581 | 1,511 | 1,397 | 1,327 | 1,202 | 1,125 |
| 構成比（%） | 4.2 | 4.1 | 3.9 | 4.0 | 4.2 | 4.3 | 4.4 | 4.5 | 4.5 | 4.7 | 4.6 | 4.5 | 4.4 | 4.4 | 4.2 | 4.0 | 4.0 | 3.9 | 3.9 | 3.8 | 3.7 | 3.5 | 3.3 | 3.1 | 2.9 |
| 35-39歳 | 2,675 | 2,571 | 2,498 | 2,440 | 2,301 | 2,205 | 2,158 | 2,052 | 2,082 | 2,079 | 2,103 | 2,133 | 2,196 | 2,175 | 2,186 | 2,141 | 2,100 | 2,052 | 2,022 | 1,965 | 1,854 | 1,796 | 1,706 | 1,635 | 1,590 |
| 構成比（%） | 5.3 | 5.1 | 5.0 | 4.9 | 4.7 | 4.5 | 4.5 | 4.3 | 4.4 | 4.4 | 4.6 | 4.7 | 4.9 | 4.9 | 5.0 | 4.9 | 4.9 | 4.8 | 4.8 | 4.7 | 4.5 | 4.4 | 4.3 | 4.2 | 4.1 |
| 40-44歳 | 3,560 | 3,317 | 3,173 | 2,978 | 2,852 | 2,740 | 2,605 | 2,554 | 2,484 | 2,339 | 2,220 | 2,145 | 2,062 | 2,106 | 2,129 | 2,169 | 2,186 | 2,233 | 2,214 | 2,241 | 2,254 | 2,226 | 2,151 | 2,100 | 1,990 |
| 構成比（%） | 7.0 | 6.6 | 6.4 | 6.0 | 5.8 | 5.7 | 5.4 | 5.4 | 5.3 | 5.0 | 4.8 | 4.7 | 4.6 | 4.7 | 4.8 | 5.0 | 5.1 | 5.3 | 5.3 | 5.4 | 5.5 | 5.5 | 5.4 | 5.4 | 5.2 |
| 45-49歳 | 4,087 | 4,417 | 4,363 | 4,016 | 3,838 | 3,591 | 3,355 | 3,178 | 2,984 | 2,867 | 2,747 | 2,593 | 2,516 | 2,424 | 2,287 | 2,208 | 2,179 | 2,097 | 2,164 | 2,155 | 2,167 | 2,170 | 2,308 | 2,253 | 2,280 |
| 構成比（%） | 8.1 | 8.8 | 8.8 | 8.1 | 7.8 | 7.4 | 7.0 | 6.7 | 6.3 | 6.1 | 5.9 | 5.7 | 5.6 | 5.4 | 5.2 | 5.1 | 5.1 | 5.0 | 5.1 | 5.2 | 5.3 | 5.4 | 5.8 | 5.8 | 5.9 |
| 50-54歳 | 3,695 | 3,468 | 3,468 | 3,729 | 3,882 | 4,089 | 4,452 | 4,414 | 4,049 | 3,881 | 3,608 | 3,367 | 3,183 | 2,989 | 2,841 | 2,702 | 2,571 | 2,529 | 2,471 | 2,403 | 2,304 | 2,241 | 2,109 | 2,171 | 2,169 |
| 構成比（%） | 7.3 | 6.9 | 7.0 | 7.6 | 7.9 | 8.4 | 9.3 | 9.3 | 8.6 | 8.3 | 7.8 | 7.4 | 7.0 | 6.7 | 6.5 | 6.2 | 6.0 | 6.0 | 5.9 | 5.8 | 5.6 | 5.5 | 5.3 | 5.6 | 5.6 |
| 55-59歳 | 3,514 | 3,439 | 3,473 | 3,533 | 3,696 | 3,719 | 3,514 | 3,519 | 3,791 | 3,940 | 4,152 | 4,508 | 4,471 | 4,126 | 3,923 | 3,647 | 3,399 | 3,185 | 2,986 | 2,912 | 2,789 | 2,637 | 2,576 | 2,522 | 2,418 |
| 構成比（%） | 7.0 | 6.9 | 7.0 | 7.2 | 7.6 | 7.7 | 7.3 | 7.4 | 8.0 | 8.4 | 9.0 | 9.9 | 9.9 | 9.2 | 8.9 | 8.4 | 7.9 | 7.5 | 7.1 | 7.0 | 6.8 | 6.5 | 6.5 | 6.5 | 6.3 |
| 60-64歳 | 4,027 | 3,963 | 3,846 | 3,773 | 3,546 | 3,484 | 3,422 | 3,502 | 3,595 | 3,793 | 3,834 | 3,643 | 3,631 | 3,893 | 4,057 | 4,287 | 4,643 | 4,606 | 4,267 | 4,076 | 3,737 | 3,547 | 3,283 | 3,068 | 2,949 |
| 構成比（%） | 8.0 | 7.9 | 7.7 | 7.6 | 7.2 | 7.2 | 7.1 | 7.4 | 7.6 | 8.1 | 8.3 | 8.0 | 8.0 | 8.7 | 9.2 | 9.9 | 10.8 | 10.9 | 10.2 | 9.8 | 9.1 | 8.8 | 8.3 | 7.9 | 7.7 |
| 65-69歳 | 4,034 | 4,054 | 3,997 | 4,002 | 3,917 | 3,861 | 3,811 | 3,715 | 3,667 | 3,481 | 3,443 | 3,411 | 3,474 | 3,603 | 3,790 | 3,839 | 3,618 | 3,624 | 3,882 | 3,997 | 4,209 | 4,506 | 4,617 | 4,336 | 4,023 |
| 構成比（%） | 8.0 | 8.1 | 8.1 | 8.1 | 8.0 | 8.0 | 7.9 | 7.8 | 7.8 | 7.4 | 7.4 | 7.5 | 7.7 | 8.1 | 8.6 | 8.8 | 8.4 | 8.6 | 9.2 | 9.6 | 10.3 | 11.2 | 11.6 | 11.1 | 10.5 |
| 70-74歳 | 3,312 | 3,399 | 3,601 | 3,701 | 3,770 | 3,747 | 3,760 | 3,725 | 3,698 | 3,666 | 3,619 | 3,579 | 3,486 | 3,431 | 3,284 | 3,241 | 3,217 | 3,315 | 3,432 | 3,581 | 3,692 | 3,530 | 3,404 | 3,594 | 3,778 |
| 構成比（%） | 6.6 | 6.8 | 7.3 | 7.5 | 7.7 | 7.7 | 7.8 | 7.8 | 7.8 | 7.8 | 7.8 | 7.8 | 7.7 | 7.7 | 7.5 | 7.5 | 7.5 | 7.8 | 8.2 | 8.6 | 9.0 | 8.7 | 8.6 | 9.2 | 9.8 |
| 75-79歳 | 2,458 | 2,539 | 2,563 | 2,664 | 2,776 | 2,898 | 3,024 | 3,186 | 3,251 | 3,312 | 3,286 | 3,303 | 3,314 | 3,289 | 3,242 | 3,213 | 3,178 | 3,088 | 3,060 | 2,956 | 2,952 | 2,971 | 3,052 | 3,140 | 3,297 |
| 構成比（%） | 4.9 | 5.1 | 5.2 | 5.4 | 5.7 | 6.0 | 6.3 | 6.7 | 6.9 | 7.1 | 7.1 | 7.2 | 7.3 | 7.4 | 7.4 | 7.4 | 7.4 | 7.3 | 7.3 | 7.1 | 7.2 | 7.4 | 7.7 | 8.0 | 8.6 |
| 80歳以上 | 2,973 | 3,107 | 3,266 | 3,425 | 3,554 | 3,688 | 3,859 | 4,012 | 4,164 | 4,411 | 4,605 | 4,776 | 4,990 | 5,152 | 5,342 | 5,453 | 5,593 | 5,709 | 5,755 | 5,795 | 5,822 | 5,905 | 5,959 | 6,032 | 5,996 |
| 構成比（%） | 5.9 | 6.2 | 6.6 | 6.9 | 7.3 | 7.6 | 8.0 | 8.4 | 8.8 | 9.4 | 10.0 | 10.4 | 11.1 | 11.5 | 12.2 | 12.6 | 13.0 | 13.5 | 13.7 | 13.9 | 14.2 | 14.6 | 15.0 | 15.5 | 15.6 |
人口増加都市
