| 表３-１-４ 人口の平均年齢,中位数年齢および年齢構造指数：中位推計（参考推計） | |||||||||||
| 中位数 | 生産年齢人口を15〜64歳とした場合 | 生産年齢人口を20〜69歳とした場合 | |||||||||
| 年 次 | 平均年齢 | 年 齢 | 従属人口指数(％) | 老年化 | 従属人口指数(％) | 老年化 | |||||
| （歳） | （歳） | 総 数 | 年少人口 | 老年人口 | 指数(％) | 総 数 | 年少人口 | 老年人口 | 指数(％) | ||
| 平成 62 | (2050) | 48.6 | 49.9 | 83.0 | 23.9 | 59.1 | 247.0 | 77.0 | 31.4 | 45.6 | 145.0 |
| 63 | (2051) | 48.7 | 49.9 | 82.9 | 23.9 | 59.0 | 247.3 | 77.2 | 31.5 | 45.7 | 145.3 |
| 64 | (2052) | 48.7 | 49.9 | 82.7 | 23.8 | 58.9 | 247.5 | 77.3 | 31.5 | 45.8 | 145.5 |
| 65 | (2053) | 48.7 | 49.9 | 82.4 | 23.7 | 58.7 | 247.4 | 77.4 | 31.5 | 45.9 | 145.8 |
| 66 | (2054) | 48.7 | 49.9 | 81.9 | 23.6 | 58.3 | 247.1 | 77.5 | 31.5 | 46.0 | 146.1 |
| 67 | (2055) | 48.7 | 49.9 | 81.4 | 23.5 | 57.9 | 246.4 | 77.5 | 31.5 | 46.0 | 146.1 |
| 68 | (2056) | 48.7 | 50.0 | 80.8 | 23.4 | 57.4 | 245.5 | 77.2 | 31.4 | 45.8 | 145.8 |
| 69 | (2057) | 48.7 | 50.0 | 80.2 | 23.3 | 56.9 | 244.5 | 76.9 | 31.4 | 45.6 | 145.4 |
| 70 | (2058) | 48.7 | 50.0 | 79.6 | 23.2 | 56.4 | 243.1 | 76.5 | 31.3 | 45.3 | 144.7 |
| 71 | (2059) | 48.7 | 50.0 | 79.0 | 23.1 | 55.9 | 241.7 | 76.0 | 31.2 | 44.8 | 143.8 |
| 72 | (2060) | 48.7 | 50.0 | 78.5 | 23.1 | 55.4 | 240.0 | 75.4 | 31.1 | 44.4 | 142.7 |
| 73 | (2061) | 48.6 | 50.0 | 78.0 | 23.1 | 54.9 | 238.3 | 74.8 | 31.0 | 43.8 | 141.4 |
| 74 | (2062) | 48.6 | 49.9 | 77.6 | 23.1 | 54.5 | 236.4 | 74.2 | 30.9 | 43.3 | 140.0 |
| 75 | (2063) | 48.5 | 49.9 | 77.3 | 23.1 | 54.2 | 234.5 | 73.6 | 30.9 | 42.7 | 138.5 |
| 76 | (2064) | 48.4 | 49.8 | 77.0 | 23.2 | 53.8 | 232.5 | 73.1 | 30.8 | 42.2 | 137.0 |
| 77 | (2065) | 48.4 | 49.8 | 76.8 | 23.2 | 53.6 | 230.5 | 72.5 | 30.8 | 41.7 | 135.5 |
| 78 | (2066) | 48.3 | 49.7 | 76.7 | 23.3 | 53.3 | 228.5 | 72.1 | 30.8 | 41.3 | 134.0 |
| 79 | (2067) | 48.2 | 49.6 | 76.7 | 23.5 | 53.2 | 226.7 | 71.8 | 30.9 | 40.9 | 132.6 |
| 80 | (2068) | 48.2 | 49.5 | 76.7 | 23.6 | 53.1 | 224.9 | 71.6 | 30.9 | 40.6 | 131.3 |
| 81 | (2069) | 48.1 | 49.4 | 76.8 | 23.7 | 53.0 | 223.3 | 71.4 | 31.0 | 40.3 | 130.0 |
| 82 | (2070) | 48.0 | 49.3 | 76.9 | 23.9 | 53.0 | 221.8 | 71.3 | 31.2 | 40.1 | 128.8 |
| 83 | (2071) | 47.9 | 49.2 | 77.1 | 24.0 | 53.0 | 220.4 | 71.3 | 31.3 | 40.0 | 127.8 |
| 84 | (2072) | 47.9 | 49.1 | 77.2 | 24.2 | 53.0 | 219.2 | 71.4 | 31.5 | 39.9 | 126.9 |
| 85 | (2073) | 47.8 | 49.0 | 77.5 | 24.3 | 53.1 | 218.1 | 71.5 | 31.6 | 39.9 | 126.2 |
| 86 | (2074) | 47.7 | 48.9 | 77.7 | 24.5 | 53.2 | 217.2 | 71.7 | 31.8 | 39.9 | 125.6 |
| 87 | (2075) | 47.7 | 48.8 | 77.9 | 24.6 | 53.3 | 216.4 | 72.0 | 32.0 | 40.0 | 125.2 |
| 88 | (2076) | 47.6 | 48.8 | 78.1 | 24.7 | 53.3 | 215.7 | 72.3 | 32.1 | 40.1 | 124.8 |
| 89 | (2077) | 47.6 | 48.7 | 78.2 | 24.8 | 53.4 | 215.1 | 72.6 | 32.3 | 40.3 | 124.6 |
| 90 | (2078) | 47.6 | 48.6 | 78.4 | 24.9 | 53.5 | 214.6 | 72.9 | 32.5 | 40.4 | 124.4 |
| 91 | (2079) | 47.5 | 48.6 | 78.5 | 25.0 | 53.5 | 214.2 | 73.2 | 32.6 | 40.6 | 124.3 |
| 92 | (2080) | 47.5 | 48.5 | 78.6 | 25.0 | 53.5 | 213.9 | 73.5 | 32.8 | 40.7 | 124.3 |
| 93 | (2081) | 47.5 | 48.5 | 78.6 | 25.1 | 53.5 | 213.5 | 73.8 | 32.9 | 40.9 | 124.2 |
| 94 | (2082) | 47.5 | 48.5 | 78.6 | 25.1 | 53.5 | 213.2 | 74.1 | 33.0 | 41.0 | 124.2 |
| 95 | (2083) | 47.4 | 48.5 | 78.6 | 25.1 | 53.4 | 212.8 | 74.3 | 33.1 | 41.1 | 124.2 |
| 96 | (2084) | 47.4 | 48.5 | 78.5 | 25.1 | 53.4 | 212.4 | 74.4 | 33.2 | 41.2 | 124.1 |
| 97 | (2085) | 47.4 | 48.5 | 78.4 | 25.1 | 53.2 | 211.9 | 74.5 | 33.3 | 41.3 | 124.0 |
| 98 | (2086) | 47.4 | 48.5 | 78.2 | 25.1 | 53.1 | 211.4 | 74.6 | 33.3 | 41.3 | 123.8 |
| 99 | (2087) | 47.4 | 48.5 | 78.0 | 25.1 | 52.9 | 210.7 | 74.6 | 33.4 | 41.2 | 123.6 |
| 100 | (2088) | 47.4 | 48.4 | 77.9 | 25.1 | 52.7 | 210.0 | 74.6 | 33.4 | 41.2 | 123.3 |
| 101 | (2089) | 47.3 | 48.4 | 77.7 | 25.1 | 52.5 | 209.2 | 74.5 | 33.4 | 41.1 | 122.9 |
| 102 | (2090) | 47.3 | 48.4 | 77.5 | 25.1 | 52.4 | 208.3 | 74.5 | 33.5 | 41.0 | 122.4 |
| 103 | (2091) | 47.3 | 48.4 | 77.3 | 25.2 | 52.2 | 207.4 | 74.3 | 33.5 | 40.8 | 121.9 |
| 104 | (2092) | 47.2 | 48.3 | 77.2 | 25.2 | 52.0 | 206.3 | 74.2 | 33.5 | 40.7 | 121.3 |
| 105 | (2093) | 47.2 | 48.3 | 77.0 | 25.2 | 51.8 | 205.2 | 74.0 | 33.6 | 40.5 | 120.6 |
| 106 | (2094) | 47.2 | 48.2 | 76.9 | 25.3 | 51.6 | 204.1 | 73.9 | 33.6 | 40.3 | 119.9 |
| 107 | (2095) | 47.1 | 48.2 | 76.8 | 25.4 | 51.5 | 202.9 | 73.7 | 33.6 | 40.1 | 119.1 |
| 108 | (2096) | 47.1 | 48.1 | 76.8 | 25.5 | 51.3 | 201.6 | 73.6 | 33.7 | 39.9 | 118.3 |
| 109 | (2097) | 47.0 | 48.0 | 76.8 | 25.6 | 51.2 | 200.4 | 73.5 | 33.8 | 39.7 | 117.5 |
| 110 | (2098) | 47.0 | 47.9 | 76.8 | 25.7 | 51.1 | 199.1 | 73.4 | 33.9 | 39.5 | 116.7 |
| 111 | (2099) | 46.9 | 47.8 | 76.8 | 25.8 | 51.0 | 197.9 | 73.3 | 34.0 | 39.4 | 115.8 |
| 112 | (2100) | 46.8 | 47.7 | 76.9 | 25.9 | 51.0 | 196.7 | 73.3 | 34.1 | 39.2 | 115.0 |
| 各年10月１日現在人 | |||||||||||