opengov.jp

Iwate (岩手)

Tohoku (東北)

2024 — Population estimate as of Oct 1

Total Population

1,145,000

-18,000 (-1.55%)

National #32

Young (0–14)

10.0%

115,000 · National avg. 11.2%

Working Age (15–64)

54.5%

624,000

Aging Rate

35.4%

405,000 · National avg. 29.3% · National #7

Age Composition (vs National)

Population Trends (1920–2024)

Breakdown by Sex (2024)

Category Total Male Female
Total 1,145,000 553,000 592,000
Young (0–14) 115,000 59,000 56,000
Working Age (15–64) 624,000 321,000 303,000
Elderly (65+) 405,000 173,000 232,000

Municipal Population (2025)

33 results
# Municipality Total Population Change 0–14 15–64 Aging Rate
1 Morioka (盛岡市) Core City 277,423 -1.02% 11.1% 59.3%
29.5%
2 Oshu (奥州市) City 107,798 -1.78% 10.1% 53.2%
36.7%
3 Ichinoseki (一関市) City 105,505 -1.91% 9.1% 51.9%
39.0%
4 Kitakami (北上市) City 91,090 -0.50% 11.1% 60.5%
28.4%
5 Hanamaki (花巻市) City 89,867 -1.35% 10.0% 54.6%
35.4%
6 Takizawa (滝沢市) City 54,413 -0.95% 12.7% 59.3%
28.0%
7 Miyako (宮古市) City 45,632 -2.63% 8.9% 50.7%
40.4%
8 Shiwa (紫波町) Town 32,684 -0.67% 11.9% 56.0%
32.1%
9 Ofunato (大船渡市) City 32,059 -2.39% 8.7% 51.3%
39.9%
10 Kuji (久慈市) City 31,216 -2.45% 9.5% 54.0%
36.5%
11 Kamaishi (釜石市) City 28,934 -3.24% 8.2% 51.1%
40.7%
12 Yahaba (矢巾町) Town 26,160 -0.69% 11.5% 59.1%
29.4%
13 Ninohe (二戸市) City 24,157 -2.02% 8.7% 51.4%
40.0%
14 Tono (遠野市) City 23,930 -2.44% 8.8% 48.6%
42.6%
15 Hachimantai (八幡平市) City 23,179 -1.54% 8.2% 48.8%
43.0%
16 Rikuzentakata (陸前高田市) City 17,226 -2.39% 8.2% 50.3%
41.5%
17 Kanegasaki (金ケ崎町) Town 15,119 -0.42% 11.0% 58.0%
31.0%
18 Shizukuishi (雫石町) Town 14,995 -2.00% 9.1% 50.4%
40.6%
19 Hirono (洋野町) Town 14,739 -2.07% 7.3% 48.9%
43.8%
20 Yamada (山田町) Town 13,854 -2.71% 8.7% 50.1%
41.2%
21 Iwate (岩手町) Town 11,542 -2.53% 7.8% 49.7%
42.6%
22 Ichinohe (一戸町) Town 10,603 -3.26% 7.3% 46.9%
45.8%
23 Otsuchi (大槌町) Town 10,492 -2.03% 9.4% 50.4%
40.2%
24 Karumai (軽米町) Town 7,907 -2.79% 7.7% 47.0%
44.3%
25 Iwaizumi (岩泉町) Town 7,843 -2.43% 7.5% 45.2%
47.3%
26 Hiraizumi (平泉町) Town 6,734 -1.82% 9.4% 48.9%
41.7%
27 Kuzumaki (葛巻町) Town 5,293 -2.58% 6.5% 42.1%
50.7%
28 Kunohe (九戸村) Village 5,084 -2.94% 7.7% 45.9%
46.5%
29 Sumita (住田町) Town 4,681 -2.82% 6.4% 45.0%
48.6%
30 Nishiwaga (西和賀町) Town 4,659 -3.74% 5.7% 39.3%
54.1%
31 Noda (野田村) Village 3,901 -1.86% 10.6% 48.8%
40.2%
32 Tanohata (田野畑村) Village 2,888 -2.99% 7.9% 45.3%
45.6%
33 Fudai (普代村) Village 2,293 -2.92% 7.2% 46.2%
45.7%

Annual Trends

Year Total Population 0–14 15–64 65+ Aging Rate
2024 1,145,000 115,000 624,000 405,000
35.4%
2023 1,163,000 120,000 636,000 407,000
35.0%
2022 1,181,000 125,000 648,000 408,000
34.5%
2021 1,196,000 129,000 659,000 409,000
34.2%
2020 1,210,534 132,735 670,784 407,015
33.6%
2015 1,279,594 151,262 740,518 387,814
30.3%
2010 1,330,147 168,804 795,780 360,498
27.1%
2005 1,385,041 190,578 850,253 339,957
24.5%
2000 1,416,180 212,470 899,177 303,988
21.5%
1995 1,419,505 239,010 925,175 255,256
18.0%
1990 1,416,928 269,810 941,052 205,737
14.5%
1985 1,433,611 307,800 955,425 170,386
11.9%
1980 1,421,927 326,014 952,388 143,400
10.1%
1975 1,385,563 338,374 928,674 118,397
8.5%
1970 1,371,383 362,118 908,795 100,470
7.3%
1965 1,411,118 429,521 895,550 86,047
6.1%
1960 1,448,517 501,782 870,492 76,243
5.3%
1955 1,427,097 522,792 835,916 68,378
4.8%
1950 1,346,728 508,725 778,465 59,466
4.4%
1945 1,227,789 487,711 684,545 55,533
4.5%
1940 1,095,671 440,074 607,079 48,507
4.4%
1935 1,046,111 424,367 573,439 48,305
4.6%
1930 975,771 389,314 537,252 49,205
5.0%
1925 900,984 354,096 496,557 50,331
5.6%
1920 845,540 321,740 471,457 52,343
6.2%