| Kansas |  |
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 | 1,328,474 | 49.4% | 1,359,944 | 50.6% |
| 0-4 | 97,012 | 3.6% | 91,696 | 3.4% |
| 5-9 | 100,433 | 3.7% | 95,141 | 3.5% |
| 10-14 | 104,981 | 3.9% | 99,037 | 3.7% |
| 15-19 | 108,040 | 4.0% | 102,078 | 3.8% |
| 20-24 | 98,767 | 3.7% | 91,400 | 3.4% |
| 25-29 | 89,034 | 3.3% | 83,941 | 3.1% |
| 30-34 | 89,610 | 3.3% | 86,268 | 3.2% |
| 35-39 | 103,934 | 3.9% | 103,615 | 3.9% |
| 40-44 | 106,394 | 4.0% | 106,408 | 4.0% |
| 45-49 | 96,544 | 3.6% | 96,135 | 3.6% |
| 50-54 | 81,121 | 3.0% | 80,347 | 3.0% |
| 55-59 | 59,523 | 2.2% | 62,122 | 2.3% |
| 60-64 | 47,566 | 1.8% | 51,042 | 1.9% |
| 65-69 | 41,641 | 1.5% | 48,444 | 1.8% |
| 70-74 | 38,309 | 1.4% | 47,522 | 1.8% |
| 75-79 | 31,357 | 1.2% | 43,768 | 1.6% |
| 80-84 | 19,596 | 0.7% | 33,822 | 1.3% |
| 85 | 14,612 | 0.5% | 37,158 | 1.4% |
| 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 | 1,214,645 | 49.0% | 1,262,929 | 51.0% |
| 0-4 | 96,837 | 3.9% | 91,553 | 3.7% |
| 5-9 | 100,504 | 4.1% | 95,477 | 3.9% |
| 10-14 | 92,409 | 3.7% | 87,064 | 3.5% |
| 15-19 | 88,466 | 3.6% | 83,710 | 3.4% |
| 20-24 | 93,256 | 3.8% | 86,831 | 3.5% |
| 25-29 | 101,772 | 4.1% | 99,652 | 4.0% |
| 30-34 | 106,272 | 4.3% | 105,477 | 4.3% |
| 35-39 | 99,030 | 4.0% | 96,782 | 3.9% |
| 40-44 | 83,474 | 3.4% | 82,040 | 3.3% |
| 45-49 | 63,799 | 2.6% | 64,799 | 2.6% |
| 50-54 | 52,345 | 2.1% | 54,445 | 2.2% |
| 55-59 | 49,887 | 2.0% | 53,934 | 2.2% |
| 60-64 | 49,909 | 2.0% | 55,279 | 2.2% |
| 65-69 | 46,434 | 1.9% | 54,987 | 2.2% |
| 70-74 | 35,390 | 1.4% | 47,853 | 1.9% |
| 75-79 | 26,586 | 1.1% | 41,034 | 1.7% |
| 80-84 | 16,707 | 0.7% | 31,339 | 1.3% |
| 85 | 11,568 | 0.5% | 30,673 | 1.2% |
Source: Census 2000 analyzed by the Social Science Data Analysis Network (SSDAN).