| Indiana |  |
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 | 2,982,474 | 49.0% | 3,098,011 | 51.0% |
| 0-4 | 216,573 | 3.6% | 206,642 | 3.4% |
| 5-9 | 227,610 | 3.7% | 215,663 | 3.5% |
| 10-14 | 227,183 | 3.7% | 216,233 | 3.6% |
| 15-19 | 232,722 | 3.8% | 220,760 | 3.6% |
| 20-24 | 216,402 | 3.6% | 209,329 | 3.4% |
| 25-29 | 206,836 | 3.4% | 202,199 | 3.3% |
| 30-34 | 212,766 | 3.5% | 209,324 | 3.4% |
| 35-39 | 238,147 | 3.9% | 240,060 | 3.9% |
| 40-44 | 240,163 | 3.9% | 242,333 | 4.0% |
| 45-49 | 217,536 | 3.6% | 219,586 | 3.6% |
| 50-54 | 186,570 | 3.1% | 193,173 | 3.2% |
| 55-59 | 143,251 | 2.4% | 150,918 | 2.5% |
| 60-64 | 112,918 | 1.9% | 122,757 | 2.0% |
| 65-69 | 93,444 | 1.5% | 110,293 | 1.8% |
| 70-74 | 83,408 | 1.4% | 108,248 | 1.8% |
| 75-79 | 64,038 | 1.1% | 95,795 | 1.6% |
| 80-84 | 37,619 | 0.6% | 68,428 | 1.1% |
| 85 | 25,288 | 0.4% | 66,270 | 1.1% |
| 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 | 2,688,281 | 48.5% | 2,855,878 | 51.5% |
| 0-4 | 203,984 | 3.7% | 194,672 | 3.5% |
| 5-9 | 210,824 | 3.8% | 199,639 | 3.6% |
| 10-14 | 208,811 | 3.8% | 197,702 | 3.6% |
| 15-19 | 217,475 | 3.9% | 210,104 | 3.8% |
| 20-24 | 209,226 | 3.8% | 208,409 | 3.8% |
| 25-29 | 221,289 | 4.0% | 226,787 | 4.1% |
| 30-34 | 230,266 | 4.2% | 236,767 | 4.3% |
| 35-39 | 214,974 | 3.9% | 218,989 | 3.9% |
| 40-44 | 189,268 | 3.4% | 195,930 | 3.5% |
| 45-49 | 153,232 | 2.8% | 157,856 | 2.8% |
| 50-54 | 126,878 | 2.3% | 132,825 | 2.4% |
| 55-59 | 114,684 | 2.1% | 125,008 | 2.3% |
| 60-64 | 113,169 | 2.0% | 129,195 | 2.3% |
| 65-69 | 100,717 | 1.8% | 125,218 | 2.3% |
| 70-74 | 73,502 | 1.3% | 102,604 | 1.9% |
| 75-79 | 51,786 | 0.9% | 82,954 | 1.5% |
| 80-84 | 29,344 | 0.5% | 58,320 | 1.1% |
| 85 | 18,852 | 0.3% | 52,899 | 1.0% |
Source: Census 2000 analyzed by the Social Science Data Analysis Network (SSDAN).