| |
| Age Group | Male | Female | United States, 2000, Universe: 001 Total population Universe Population: 281,421,906 | ||
| Population | Pct | Population | Pct |  | |
| Total | 138,053,563 | 49.1 | 143,368,343 | 50.9 | |
| 0- 4 | 9,810,733 | 3.5 | 9,365,065 | 3.3 | |
| 5- 9 | 10,523,277 | 3.7 | 10,026,228 | 3.6 | |
| 10-14 | 10,520,197 | 3.7 | 10,007,875 | 3.6 | |
| 15-19 | 10,391,004 | 3.7 | 9,828,886 | 3.5 | |
| 20-24 | 9,687,814 | 3.4 | 9,276,187 | 3.3 | |
| 25-29 | 9,798,760 | 3.5 | 9,582,576 | 3.4 | |
| 30-34 | 10,321,769 | 3.7 | 10,188,619 | 3.6 | |
| 35-39 | 11,318,696 | 4.0 | 11,387,968 | 4.0 | |
| 40-44 | 11,129,102 | 4.0 | 11,312,761 | 4.0 | |
| 45-49 | 9,889,506 | 3.5 | 10,202,898 | 3.6 | |
| 50-54 | 8,607,724 | 3.1 | 8,977,824 | 3.2 | |
| 55-59 | 6,508,729 | 2.3 | 6,960,508 | 2.5 | |
| 60-64 | 5,136,627 | 1.8 | 5,668,820 | 2.0 | |
| 65-69 | 4,400,362 | 1.6 | 5,133,183 | 1.8 | |
| 70-74 | 3,902,912 | 1.4 | 4,954,529 | 1.8 | |
| 75-79 | 3,044,456 | 1.1 | 4,371,357 | 1.6 | |
| 80-84 | 1,834,897 | 0.7 | 3,110,470 | 1.1 | |
| 85+ | 1,226,998 | 0.4 | 3,012,589 | 1.1 | |