岩手県二戸郡一戸町| 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 | 725 | 685 | 666 | 634 | 626 | 586 | 570 | 541 | 524 | 480 | 454 | 422 | 405 | 410 | 416 | 405 | 402 | 386 | 374 | 385 | 381 | 346 | 328 | 305 | 279 |
| 構成比（%） | 4.0 | 3.8 | 3.8 | 3.6 | 3.6 | 3.4 | 3.4 | 3.2 | 3.2 | 3.0 | 2.9 | 2.7 | 2.6 | 2.7 | 2.8 | 2.8 | 2.8 | 2.7 | 2.7 | 2.8 | 2.8 | 2.6 | 2.5 | 2.4 | 2.2 |
| 5-9歳 | 904 | 868 | 833 | 793 | 756 | 725 | 683 | 664 | 613 | 598 | 564 | 554 | 526 | 504 | 475 | 457 | 442 | 423 | 422 | 434 | 418 | 414 | 398 | 399 | 396 |
| 構成比（%） | 5.0 | 4.8 | 4.7 | 4.5 | 4.3 | 4.2 | 4.0 | 4.0 | 3.7 | 3.7 | 3.5 | 3.5 | 3.4 | 3.3 | 3.2 | 3.1 | 3.1 | 3.0 | 3.0 | 3.1 | 3.0 | 3.1 | 3.0 | 3.1 | 3.2 |
| 10-14歳 | 1,179 | 1,119 | 1,050 | 974 | 944 | 909 | 852 | 807 | 781 | 728 | 701 | 664 | 645 | 592 | 582 | 553 | 551 | 533 | 524 | 497 | 482 | 456 | 423 | 421 | 420 |
| 構成比（%） | 6.5 | 6.2 | 5.9 | 5.5 | 5.4 | 5.3 | 5.0 | 4.8 | 4.8 | 4.5 | 4.4 | 4.2 | 4.2 | 3.9 | 3.9 | 3.8 | 3.8 | 3.7 | 3.7 | 3.6 | 3.5 | 3.4 | 3.2 | 3.3 | 3.3 |
| 15-19歳 | 1,171 | 1,166 | 1,157 | 1,123 | 1,087 | 1,049 | 1,007 | 933 | 878 | 838 | 808 | 747 | 713 | 670 | 626 | 607 | 588 | 577 | 539 | 552 | 526 | 527 | 527 | 505 | 478 |
| 構成比（%） | 6.5 | 6.5 | 6.5 | 6.4 | 6.2 | 6.1 | 6.0 | 5.6 | 5.4 | 5.2 | 5.1 | 4.7 | 4.6 | 4.4 | 4.2 | 4.1 | 4.1 | 4.1 | 3.8 | 4.0 | 3.8 | 3.9 | 4.0 | 3.9 | 3.8 |
| 20-24歳 | 801 | 773 | 777 | 812 | 809 | 801 | 816 | 808 | 764 | 763 | 730 | 708 | 621 | 574 | 545 | 530 | 475 | 471 | 468 | 471 | 462 | 416 | 418 | 399 | 376 |
| 構成比（%） | 4.4 | 4.3 | 4.4 | 4.6 | 4.6 | 4.7 | 4.8 | 4.8 | 4.7 | 4.7 | 4.6 | 4.5 | 4.0 | 3.8 | 3.7 | 3.6 | 3.3 | 3.3 | 3.3 | 3.4 | 3.4 | 3.1 | 3.2 | 3.1 | 3.0 |
| 25-29歳 | 817 | 829 | 859 | 841 | 805 | 745 | 677 | 686 | 687 | 681 | 672 | 667 | 690 | 655 | 631 | 610 | 592 | 556 | 524 | 517 | 483 | 469 | 427 | 411 | 413 |
| 構成比（%） | 4.5 | 4.6 | 4.8 | 4.8 | 4.6 | 4.4 | 4.0 | 4.1 | 4.2 | 4.2 | 4.2 | 4.2 | 4.4 | 4.3 | 4.2 | 4.2 | 4.1 | 3.9 | 3.7 | 3.7 | 3.5 | 3.5 | 3.3 | 3.2 | 3.3 |
| 30-34歳 | 910 | 860 | 813 | 815 | 805 | 773 | 809 | 817 | 777 | 756 | 706 | 663 | 642 | 634 | 619 | 614 | 629 | 638 | 637 | 631 | 613 | 565 | 520 | 484 | 439 |
| 構成比（%） | 5.0 | 4.8 | 4.6 | 4.6 | 4.6 | 4.5 | 4.8 | 4.9 | 4.7 | 4.7 | 4.4 | 4.2 | 4.1 | 4.2 | 4.1 | 4.2 | 4.3 | 4.5 | 4.5 | 4.5 | 4.5 | 4.2 | 4.0 | 3.8 | 3.5 |
| 35-39歳 | 1,132 | 1,091 | 1,028 | 973 | 947 | 921 | 871 | 816 | 804 | 777 | 764 | 787 | 800 | 749 | 733 | 703 | 664 | 654 | 676 | 662 | 660 | 660 | 644 | 610 | 593 |
| 構成比（%） | 6.2 | 6.1 | 5.8 | 5.5 | 5.4 | 5.4 | 5.2 | 4.9 | 4.9 | 4.8 | 4.8 | 5.0 | 5.2 | 4.9 | 4.9 | 4.8 | 4.6 | 4.6 | 4.8 | 4.8 | 4.8 | 4.9 | 4.9 | 4.8 | 4.7 |
| 40-44歳 | 1,373 | 1,308 | 1,262 | 1,210 | 1,180 | 1,147 | 1,073 | 1,011 | 952 | 913 | 896 | 852 | 809 | 788 | 776 | 760 | 783 | 778 | 737 | 755 | 731 | 688 | 668 | 667 | 643 |
| 構成比（%） | 7.6 | 7.3 | 7.1 | 6.9 | 6.8 | 6.7 | 6.4 | 6.1 | 5.8 | 5.6 | 5.6 | 5.4 | 5.2 | 5.2 | 5.2 | 5.2 | 5.4 | 5.5 | 5.3 | 5.4 | 5.3 | 5.1 | 5.1 | 5.2 | 5.1 |
| 45-49歳 | 1,182 | 1,327 | 1,374 | 1,425 | 1,411 | 1,358 | 1,311 | 1,259 | 1,216 | 1,165 | 1,119 | 1,085 | 1,013 | 944 | 914 | 882 | 822 | 787 | 781 | 751 | 743 | 749 | 774 | 743 | 736 |
| 構成比（%） | 6.5 | 7.4 | 7.7 | 8.1 | 8.1 | 7.9 | 7.8 | 7.5 | 7.4 | 7.2 | 7.0 | 6.9 | 6.5 | 6.2 | 6.1 | 6.0 | 5.7 | 5.5 | 5.6 | 5.4 | 5.4 | 5.6 | 5.9 | 5.8 | 5.9 |
| 50-54歳 | 1,107 | 1,041 | 1,036 | 1,059 | 1,081 | 1,161 | 1,303 | 1,363 | 1,393 | 1,387 | 1,336 | 1,319 | 1,277 | 1,224 | 1,177 | 1,137 | 1,073 | 994 | 920 | 898 | 874 | 840 | 790 | 773 | 740 |
| 構成比（%） | 6.1 | 5.8 | 5.8 | 6.0 | 6.2 | 6.8 | 7.7 | 8.2 | 8.5 | 8.6 | 8.4 | 8.4 | 8.2 | 8.1 | 7.9 | 7.7 | 7.4 | 7.0 | 6.6 | 6.4 | 6.4 | 6.3 | 6.0 | 6.0 | 5.9 |
| 55-59歳 | 1,327 | 1,236 | 1,159 | 1,109 | 1,096 | 1,069 | 1,004 | 1,013 | 1,037 | 1,053 | 1,129 | 1,289 | 1,362 | 1,401 | 1,385 | 1,335 | 1,286 | 1,243 | 1,197 | 1,162 | 1,110 | 1,050 | 977 | 903 | 871 |
| 構成比（%） | 7.3 | 6.9 | 6.5 | 6.3 | 6.3 | 6.2 | 5.9 | 6.1 | 6.3 | 6.5 | 7.1 | 8.2 | 8.8 | 9.2 | 9.3 | 9.1 | 8.9 | 8.7 | 8.5 | 8.3 | 8.1 | 7.8 | 7.5 | 7.0 | 6.9 |
| 60-64歳 | 1,551 | 1,564 | 1,491 | 1,407 | 1,360 | 1,285 | 1,193 | 1,124 | 1,074 | 1,063 | 1,038 | 995 | 989 | 1,011 | 1,034 | 1,105 | 1,245 | 1,291 | 1,328 | 1,346 | 1,310 | 1,272 | 1,232 | 1,184 | 1,125 |
| 構成比（%） | 8.5 | 8.7 | 8.4 | 8.0 | 7.8 | 7.5 | 7.1 | 6.7 | 6.5 | 6.6 | 6.5 | 6.3 | 6.4 | 6.7 | 6.9 | 7.5 | 8.6 | 9.1 | 9.5 | 9.7 | 9.6 | 9.5 | 9.4 | 9.2 | 8.9 |
| 65-69歳 | 1,438 | 1,446 | 1,501 | 1,528 | 1,479 | 1,478 | 1,486 | 1,428 | 1,348 | 1,296 | 1,219 | 1,137 | 1,080 | 1,033 | 1,013 | 984 | 936 | 934 | 961 | 983 | 1,029 | 1,146 | 1,215 | 1,266 | 1,294 |
| 構成比（%） | 7.9 | 8.1 | 8.5 | 8.7 | 8.5 | 8.6 | 8.8 | 8.6 | 8.2 | 8.0 | 7.7 | 7.2 | 7.0 | 6.8 | 6.8 | 6.7 | 6.5 | 6.6 | 6.9 | 7.1 | 7.5 | 8.5 | 9.3 | 9.9 | 10.3 |
| 70-74歳 | 1,048 | 1,125 | 1,189 | 1,270 | 1,306 | 1,300 | 1,321 | 1,364 | 1,396 | 1,340 | 1,356 | 1,359 | 1,318 | 1,252 | 1,221 | 1,149 | 1,057 | 997 | 951 | 918 | 930 | 871 | 868 | 900 | 923 |
| 構成比（%） | 5.8 | 6.3 | 6.7 | 7.2 | 7.5 | 7.6 | 7.8 | 8.2 | 8.5 | 8.3 | 8.5 | 8.6 | 8.5 | 8.2 | 8.2 | 7.8 | 7.3 | 7.0 | 6.8 | 6.6 | 6.8 | 6.5 | 6.6 | 7.0 | 7.3 |
| 75-79歳 | 711 | 712 | 755 | 757 | 833 | 881 | 948 | 1,003 | 1,076 | 1,141 | 1,138 | 1,143 | 1,198 | 1,223 | 1,175 | 1,212 | 1,219 | 1,189 | 1,119 | 1,107 | 1,015 | 967 | 900 | 866 | 829 |
| 構成比（%） | 3.9 | 4.0 | 4.3 | 4.3 | 4.8 | 5.1 | 5.6 | 6.0 | 6.6 | 7.1 | 7.2 | 7.3 | 7.7 | 8.0 | 7.9 | 8.3 | 8.4 | 8.4 | 8.0 | 7.9 | 7.4 | 7.2 | 6.9 | 6.7 | 6.6 |
| 80歳以上 | 767 | 795 | 804 | 858 | 893 | 938 | 971 | 1,048 | 1,081 | 1,184 | 1,276 | 1,340 | 1,426 | 1,529 | 1,609 | 1,635 | 1,700 | 1,765 | 1,861 | 1,864 | 1,940 | 1,969 | 1,977 | 1,994 | 2,015 |
| 構成比（%） | 4.2 | 4.4 | 4.5 | 4.9 | 5.1 | 5.5 | 5.7 | 6.3 | 6.6 | 7.3 | 8.0 | 8.5 | 9.2 | 10.1 | 10.8 | 11.1 | 11.8 | 12.4 | 13.3 | 13.4 | 14.2 | 14.7 | 15.1 | 15.5 | 16.0 |
人口増加都市
