| Wyoming |  |
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 | 248,374 | 50.3% | 245,408 | 49.7% |
| 0-4 | 15,893 | 3.2% | 15,047 | 3.0% |
| 5-9 | 17,524 | 3.5% | 16,603 | 3.4% |
| 10-14 | 19,732 | 4.0% | 18,644 | 3.8% |
| 15-19 | 21,761 | 4.4% | 20,142 | 4.1% |
| 20-24 | 17,514 | 3.5% | 15,941 | 3.2% |
| 25-29 | 15,614 | 3.2% | 14,470 | 2.9% |
| 30-34 | 15,185 | 3.1% | 14,585 | 3.0% |
| 35-39 | 18,032 | 3.7% | 18,450 | 3.7% |
| 40-44 | 21,210 | 4.3% | 21,073 | 4.3% |
| 45-49 | 20,651 | 4.2% | 20,050 | 4.1% |
| 50-54 | 17,299 | 3.5% | 16,079 | 3.3% |
| 55-59 | 12,711 | 2.6% | 12,224 | 2.5% |
| 60-64 | 9,871 | 2.0% | 9,784 | 2.0% |
| 65-69 | 8,009 | 1.6% | 8,589 | 1.7% |
| 70-74 | 7,010 | 1.4% | 7,735 | 1.6% |
| 75-79 | 5,225 | 1.1% | 6,583 | 1.3% |
| 80-84 | 3,116 | 0.6% | 4,691 | 1.0% |
| 85 | 2,017 | 0.4% | 4,718 | 1.0% |
| 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 | 227,007 | 50.0% | 226,581 | 50.0% |
| 0-4 | 17,808 | 3.9% | 16,972 | 3.7% |
| 5-9 | 20,702 | 4.6% | 19,915 | 4.4% |
| 10-14 | 20,102 | 4.4% | 18,815 | 4.1% |
| 15-19 | 18,126 | 4.0% | 16,681 | 3.7% |
| 20-24 | 14,145 | 3.1% | 13,645 | 3.0% |
| 25-29 | 16,386 | 3.6% | 16,882 | 3.7% |
| 30-34 | 20,470 | 4.5% | 20,558 | 4.5% |
| 35-39 | 21,005 | 4.6% | 19,909 | 4.4% |
| 40-44 | 17,318 | 3.8% | 15,967 | 3.5% |
| 45-49 | 12,886 | 2.8% | 12,380 | 2.7% |
| 50-54 | 10,211 | 2.3% | 10,020 | 2.2% |
| 55-59 | 8,796 | 1.9% | 9,097 | 2.0% |
| 60-64 | 8,820 | 1.9% | 8,777 | 1.9% |
| 65-69 | 7,532 | 1.7% | 8,187 | 1.8% |
| 70-74 | 5,444 | 1.2% | 6,596 | 1.5% |
| 75-79 | 3,822 | 0.8% | 5,285 | 1.2% |
| 80-84 | 2,163 | 0.5% | 3,616 | 0.8% |
| 85 | 1,271 | 0.3% | 3,279 | 0.7% |
Source: Census 2000 analyzed by the Social Science Data Analysis Network (SSDAN).