| Orange County |  |
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 this, 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 | ||||
| Male | Female | |||
| Number | Percent | Number | Percent | |
| Total Population | 443,716 | 49.5% | 452,628 | 50.5% |
| 0-4 | 31,444 | 3.5% | 29,931 | 3.3% |
| 5-9 | 33,477 | 3.7% | 31,764 | 3.5% |
| 10-14 | 32,690 | 3.6% | 30,982 | 3.5% |
| 15-19 | 32,108 | 3.6% | 31,234 | 3.5% |
| 20-24 | 35,810 | 4.0% | 34,953 | 3.9% |
| 25-29 | 37,543 | 4.2% | 36,375 | 4.1% |
| 30-34 | 38,798 | 4.3% | 36,339 | 4.1% |
| 35-39 | 40,870 | 4.6% | 39,405 | 4.4% |
| 40-44 | 36,869 | 4.1% | 36,477 | 4.1% |
| 45-49 | 30,169 | 3.4% | 31,048 | 3.5% |
| 50-54 | 25,010 | 2.8% | 26,286 | 2.9% |
| 55-59 | 17,982 | 2.0% | 19,431 | 2.2% |
| 60-64 | 13,757 | 1.5% | 15,633 | 1.7% |
| 65-69 | 12,022 | 1.3% | 14,042 | 1.6% |
| 70-74 | 10,063 | 1.1% | 13,242 | 1.5% |
| 75-79 | 7,616 | 0.8% | 11,194 | 1.2% |
| 80-84 | 4,663 | 0.5% | 7,474 | 0.8% |
| 85 | 2,825 | 0.3% | 6,818 | 0.8% |
| Age Distribution by Sex, 1990 | ||||
| Male | Female | |||
| Number | Percent | Number | Percent | |
| Total Population | 336,061 | 49.6% | 341,430 | 50.4% |
| 0-4 | 25,477 | 3.8% | 24,385 | 3.6% |
| 5-9 | 23,207 | 3.4% | 22,574 | 3.3% |
| 10-14 | 21,089 | 3.1% | 20,360 | 3.0% |
| 15-19 | 26,158 | 3.9% | 22,874 | 3.4% |
| 20-24 | 31,655 | 4.7% | 29,605 | 4.4% |
| 25-29 | 36,910 | 5.4% | 34,589 | 5.1% |
| 30-34 | 34,586 | 5.1% | 32,756 | 4.8% |
| 35-39 | 27,936 | 4.1% | 27,068 | 4.0% |
| 40-44 | 22,944 | 3.4% | 23,198 | 3.4% |
| 45-49 | 17,269 | 2.5% | 17,723 | 2.6% |
| 50-54 | 13,908 | 2.1% | 15,056 | 2.2% |
| 55-59 | 13,112 | 1.9% | 14,116 | 2.1% |
| 60-64 | 12,376 | 1.8% | 14,526 | 2.1% |
| 65-69 | 11,299 | 1.7% | 13,949 | 2.1% |
| 70-74 | 8,292 | 1.2% | 10,545 | 1.6% |
| 75-79 | 5,261 | 0.8% | 7,863 | 1.2% |
| 80-84 | 2,832 | 0.4% | 5,461 | 0.8% |
| 85 | 1,750 | 0.3% | 4,782 | 0.7% |
Source: Census 2000 analyzed by the Social Science Data Analysis Network (SSDAN).