| California |  |
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 | ||||
|
Male
|
Female
|
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| Number | Percent | Number | Percent | |
| Total Population | 16,874,892 | 49.8% | 16,996,756 | 50.2% |
| 0-4 | 1,272,884 | 3.8% | 1,214,097 | 3.6% |
| 5-9 | 1,396,480 | 4.1% | 1,329,400 | 3.9% |
| 10-14 | 1,317,135 | 3.9% | 1,253,687 | 3.7% |
| 15-19 | 1,271,626 | 3.8% | 1,179,262 | 3.5% |
| 20-24 | 1,245,530 | 3.7% | 1,135,758 | 3.4% |
| 25-29 | 1,311,445 | 3.9% | 1,232,096 | 3.6% |
| 30-34 | 1,382,355 | 4.1% | 1,303,166 | 3.8% |
| 35-39 | 1,430,293 | 4.2% | 1,384,450 | 4.1% |
| 40-44 | 1,342,201 | 4.0% | 1,328,397 | 3.9% |
| 45-49 | 1,152,957 | 3.4% | 1,178,835 | 3.5% |
| 50-54 | 980,804 | 2.9% | 1,019,039 | 3.0% |
| 55-59 | 711,203 | 2.1% | 756,049 | 2.2% |
| 60-64 | 546,105 | 1.6% | 600,736 | 1.8% |
| 65-69 | 456,776 | 1.3% | 527,759 | 1.6% |
| 70-74 | 397,927 | 1.2% | 505,361 | 1.5% |
| 75-79 | 327,683 | 1.0% | 451,664 | 1.3% |
| 80-84 | 197,306 | 0.6% | 305,525 | 0.9% |
| 85 | 134,182 | 0.4% | 291,475 | 0.9% |
| Age Distribution by Sex, 1990 | ||||
|
Male
|
Female
|
|||
| Number | Percent | Number | Percent | |
| Total Population | 14,897,627 | 50.1% | 14,862,394 | 49.9% |
| 0-4 | 1,227,593 | 4.1% | 1,170,122 | 3.9% |
| 5-9 | 1,138,181 | 3.8% | 1,085,801 | 3.6% |
| 10-14 | 1,013,849 | 3.4% | 963,494 | 3.2% |
| 15-19 | 1,077,682 | 3.6% | 975,466 | 3.3% |
| 20-24 | 1,348,808 | 4.5% | 1,161,986 | 3.9% |
| 25-29 | 1,494,692 | 5.0% | 1,359,365 | 4.6% |
| 30-34 | 1,455,070 | 4.9% | 1,377,244 | 4.6% |
| 35-39 | 1,267,705 | 4.3% | 1,233,244 | 4.1% |
| 40-44 | 1,071,416 | 3.6% | 1,066,956 | 3.6% |
| 45-49 | 807,467 | 2.7% | 813,061 | 2.7% |
| 50-54 | 633,482 | 2.1% | 648,559 | 2.2% |
| 55-59 | 551,968 | 1.9% | 581,939 | 2.0% |
| 60-64 | 513,915 | 1.7% | 585,404 | 2.0% |
| 65-69 | 476,557 | 1.6% | 578,617 | 1.9% |
| 70-74 | 350,804 | 1.2% | 451,243 | 1.5% |
| 75-79 | 244,198 | 0.8% | 357,611 | 1.2% |
| 80-84 | 137,410 | 0.5% | 240,005 | 0.8% |
| 85 | 86,830 | 0.3% | 212,277 | 0.7% |
Source: Census 2000 analyzed by the Social Science Data Analysis Network (SSDAN).