| |
| Age Group | Male | Female | Wisconsin, 2000, Universe: 001 Total population Universe Population: 5,363,675 | ||
| Population | Pct | Population | Pct |  | |
| Total | 2,649,041 | 49.4 | 2,714,634 | 50.6 | |
| 0- 4 | 175,041 | 3.3 | 167,299 | 3.1 | |
| 5- 9 | 194,506 | 3.6 | 184,978 | 3.4 | |
| 10-14 | 206,665 | 3.9 | 196,409 | 3.7 | |
| 15-19 | 208,785 | 3.9 | 198,410 | 3.7 | |
| 20-24 | 182,372 | 3.4 | 174,920 | 3.3 | |
| 25-29 | 170,011 | 3.2 | 163,902 | 3.1 | |
| 30-34 | 188,414 | 3.5 | 183,841 | 3.4 | |
| 35-39 | 217,663 | 4.1 | 217,592 | 4.1 | |
| 40-44 | 221,424 | 4.1 | 218,843 | 4.1 | |
| 45-49 | 200,621 | 3.7 | 197,072 | 3.7 | |
| 50-54 | 168,086 | 3.1 | 166,527 | 3.1 | |
| 55-59 | 124,363 | 2.3 | 128,379 | 2.4 | |
| 60-64 | 99,580 | 1.9 | 105,419 | 2.0 | |
| 65-69 | 85,771 | 1.6 | 96,348 | 1.8 | |
| 70-74 | 78,610 | 1.5 | 94,578 | 1.8 | |
| 75-79 | 61,121 | 1.1 | 85,554 | 1.6 | |
| 80-84 | 38,757 | 0.7 | 66,189 | 1.2 | |
| 85+ | 27,251 | 0.5 | 68,374 | 1.3 | |