| Arizona |  |
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 | 2,561,057 | 49.9% | 2,569,575 | 50.1% |
| 0-4 | 195,634 | 3.8% | 186,752 | 3.6% |
| 5-9 | 199,476 | 3.9% | 190,393 | 3.7% |
| 10-14 | 194,064 | 3.8% | 184,147 | 3.6% |
| 15-19 | 190,608 | 3.7% | 177,114 | 3.5% |
| 20-24 | 191,086 | 3.7% | 171,774 | 3.3% |
| 25-29 | 195,400 | 3.8% | 178,706 | 3.5% |
| 30-34 | 191,666 | 3.7% | 176,893 | 3.4% |
| 35-39 | 199,664 | 3.9% | 193,023 | 3.8% |
| 40-44 | 188,993 | 3.7% | 187,124 | 3.6% |
| 45-49 | 163,478 | 3.2% | 168,425 | 3.3% |
| 50-54 | 144,311 | 2.8% | 151,690 | 3.0% |
| 55-59 | 113,487 | 2.2% | 125,188 | 2.4% |
| 60-64 | 96,923 | 1.9% | 106,774 | 2.1% |
| 65-69 | 90,270 | 1.8% | 98,737 | 1.9% |
| 70-74 | 81,419 | 1.6% | 93,415 | 1.8% |
| 75-79 | 63,418 | 1.2% | 80,783 | 1.6% |
| 80-84 | 38,132 | 0.7% | 53,140 | 1.0% |
| 85 | 23,028 | 0.4% | 45,497 | 0.9% |
| 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 | 1,810,691 | 49.4% | 1,854,537 | 50.6% |
| 0-4 | 149,642 | 4.1% | 143,217 | 3.9% |
| 5-9 | 143,978 | 3.9% | 137,755 | 3.8% |
| 10-14 | 132,160 | 3.6% | 126,204 | 3.4% |
| 15-19 | 134,271 | 3.7% | 126,651 | 3.5% |
| 20-24 | 145,249 | 4.0% | 134,672 | 3.7% |
| 25-29 | 162,127 | 4.4% | 155,921 | 4.3% |
| 30-34 | 159,973 | 4.4% | 156,878 | 4.3% |
| 35-39 | 141,870 | 3.9% | 140,895 | 3.8% |
| 40-44 | 122,852 | 3.4% | 123,091 | 3.4% |
| 45-49 | 94,547 | 2.6% | 98,024 | 2.7% |
| 50-54 | 75,955 | 2.1% | 80,990 | 2.2% |
| 55-59 | 70,240 | 1.9% | 76,418 | 2.1% |
| 60-64 | 70,890 | 1.9% | 81,984 | 2.2% |
| 65-69 | 72,823 | 2.0% | 87,340 | 2.4% |
| 70-74 | 58,748 | 1.6% | 71,133 | 1.9% |
| 75-79 | 40,594 | 1.1% | 54,175 | 1.5% |
| 80-84 | 22,303 | 0.6% | 33,941 | 0.9% |
| 85 | 12,469 | 0.3% | 25,248 | 0.7% |
Source: Census 2000 analyzed by the Social Science Data Analysis Network (SSDAN).