Age Group 1900 1910 1920 1930 1940 1950 1960 1970 1980 1990 2000
0 to 4 203,651 228,459 228,581 205,076 210,660 279,603 294,913 235,764 238,516 256,337 264,679
5 to 9 194,263 208,780 235,827 240,750 214,036 244,044 286,285 269,242 253,643 256,076 285,243
10 to 14 174,363 192,406 223,040 222,808 215,989 212,300 268,930 282,703 266,179 253,719 290,479
15 to 19 157,420 172,674 182,761 211,345 224,090 194,275 228,819 280,881 317,234 277,634 295,377
20 to 24 138,747 151,470 160,204 166,354 193,891 177,014 166,802 238,202 313,738 282,967 281,714
25 to 29 96,614 118,317 126,448 120,468 160,513 172,433 147,357 174,904 273,137 296,764 276,855
30 to 34 71,455 91,750 98,891 98,859 128,812 149,327 149,510 145,341 243,604 294,584 283,976
35 to 39 63,515 83,534 104,386 104,760 115,046 146,493 157,596 141,520 192,166 275,683 314,558
40 to 44 56,482 61,468 79,488 86,589 95,827 120,927 142,422 144,480 158,339 247,612 310,566
45 to49 45,709 48,096 71,490 78,138 85,689 99,968 129,507 146,165 150,057 196,103 287,778
50 to 54 42,718 47,161 50,909 65,371 72,885 83,431 105,885 130,954 149,126 159,507 262,543
55 to 59 27,427 32,295 32,763 44,318 56,021 67,652 86,583 114,088 149,937 148,762 206,762
60 to 64 26,525 32,527 34,225 36,173 45,031 54,555 67,386 95,312 128,816 144,020 166,149
65 to 69 16,790 19,979 23,639 23,596 40,419 52,127 60,661 74,257 110,235 140,455 145,599
70 to 74 11,327 12,283 15,525 16,845 21,573 32,061 42,768 50,967 79,292 105,850 124,449
75 to 79 11,506 6,398 8,010 9,437 10,393 19,053 26,785 33,745 50,457 74,914 101,445
80 to 84 - 3,331 3,817 4,670 5,699 7,571 12,942 19,041 27,340 44,967 63,571
85 to 89 - 2,101 2,384 2,616 3,230 3,240 6,070 10,351 15,104 23,250 33,682
90 to 94 - - - - 758 950 1,373 2,599 4,900 7,123 12,808
95 to 99 - - - - - - - - - 2,067 3,206
100 and older - - - - - - - - - 376 573
Median Age 18 19 19 20 22 24 23 25 28 32 35
Total 1,340,316 1,515,400 1,683,724 1,738,765 1,899,804 2,117,027 2,382,594 2,590,516 3,121,820 3,486,703 4,012,012

Note: In 1900, the 75 to 79 age group is the 75+ age group.

Shaded cells follow the age group 0-4 in 1900, aging them to age group 100-104 in 2000. Age groups are affected by mortality, migration and fertility. The average years of life at birth in 1900 was 50 years; in 2000 it was over 75 years. From 1900 to 1970 the state experienced out-migration of 1,977,000 residents. From 1970 to 2000, the state experienced in-migration of 698,000 residents. In 1900, a woman had on average 4 births, which declined to 2 births in the 1930's, increased to almost 4 births in the early 1950's, and in 2000, declined to about 2 births per woman.

The population is aging; "baby boomers" are turning 50 and the number of people moving to the state for retirement is increasing. The fastest growing age groups are 50-54 and 85+.

Source: U.S. Census Bureau, Census of Population and Housing.

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