| Wisconsin |  |
AGE DISTRIBUTION
Drawn as a "population pyramid," an area's age-sex structure hints at its patterns of growth. A top heavy pyramid, like the one for Grant County, North Dakota , suggests negative population growth that might be due to any number of factors, including high death rates, low birth rates, and increased emigration from the area. A bottom heavy pyramid, like the one drawn for Orange County, Florida , suggests high birthrates, falling or stable death rates, and the potential for rapid population growth. Most areas, however, fall somewhere between these two extremes and have a population pyramid that resembles a square, indicating slow and sustained growth with the birth rate exceeding the death rate, though not by a great margin.
| Age Distribution by Sex, 2000 | ||||
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Male
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Female
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| Number | Percent | Number | Percent | |
| Total Population | 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% |
| Age Distribution by Sex, 1990 | ||||
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Male
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Female
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| Number | Percent | Number | Percent | |
| Total Population | 2,392,935 | 48.9% | 2,498,834 | 51.1% |
| 0-4 | 184,752 | 3.8% | 175,978 | 3.6% |
| 5-9 | 192,535 | 3.9% | 183,768 | 3.8% |
| 10-14 | 181,775 | 3.7% | 171,812 | 3.5% |
| 15-19 | 177,063 | 3.6% | 170,226 | 3.5% |
| 20-24 | 181,812 | 3.7% | 181,587 | 3.7% |
| 25-29 | 199,600 | 4.1% | 201,745 | 4.1% |
| 30-34 | 209,420 | 4.3% | 211,450 | 4.3% |
| 35-39 | 195,602 | 4.0% | 193,906 | 4.0% |
| 40-44 | 168,238 | 3.4% | 166,871 | 3.4% |
| 45-49 | 129,267 | 2.6% | 131,237 | 2.7% |
| 50-54 | 107,840 | 2.2% | 110,538 | 2.3% |
| 55-59 | 99,641 | 2.0% | 105,006 | 2.1% |
| 60-64 | 100,535 | 2.1% | 108,344 | 2.2% |
| 65-69 | 89,744 | 1.8% | 105,565 | 2.2% |
| 70-74 | 70,445 | 1.4% | 92,665 | 1.9% |
| 75-79 | 52,516 | 1.1% | 78,780 | 1.6% |
| 80-84 | 31,031 | 0.6% | 56,182 | 1.1% |
| 85 | 21,119 | 0.4% | 53,174 | 1.1% |
Source: Census 2000 analyzed by the Social Science Data Analysis Network (SSDAN).