| Texas |  |
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 | 10,352,910 | 49.6% | 10,498,910 | 50.4% |
| 0-4 | 830,745 | 4.0% | 793,883 | 3.8% |
| 5-9 | 844,959 | 4.1% | 809,225 | 3.9% |
| 10-14 | 834,526 | 4.0% | 796,666 | 3.8% |
| 15-19 | 847,462 | 4.1% | 788,770 | 3.8% |
| 20-24 | 794,799 | 3.8% | 744,605 | 3.6% |
| 25-29 | 810,965 | 3.9% | 780,557 | 3.7% |
| 30-34 | 798,051 | 3.8% | 772,510 | 3.7% |
| 35-39 | 849,270 | 4.1% | 839,613 | 4.0% |
| 40-44 | 819,334 | 3.9% | 814,021 | 3.9% |
| 45-49 | 702,056 | 3.4% | 714,122 | 3.4% |
| 50-54 | 587,762 | 2.8% | 607,197 | 2.9% |
| 55-59 | 436,105 | 2.1% | 460,416 | 2.2% |
| 60-64 | 334,695 | 1.6% | 366,974 | 1.8% |
| 65-69 | 283,517 | 1.4% | 326,915 | 1.6% |
| 70-74 | 234,965 | 1.1% | 297,211 | 1.4% |
| 75-79 | 175,337 | 0.8% | 248,697 | 1.2% |
| 80-84 | 100,142 | 0.5% | 167,808 | 0.8% |
| 85 | 68,220 | 0.3% | 169,720 | 0.8% |
| Age Distribution by Sex, 1990 | ||||
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Male
|
Female
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| Number | Percent | Number | Percent | |
| Total Population | 8,365,963 | 49.3% | 8,620,547 | 50.7% |
| 0-4 | 711,144 | 4.2% | 678,910 | 4.0% |
| 5-9 | 713,663 | 4.2% | 682,510 | 4.0% |
| 10-14 | 662,092 | 3.9% | 632,261 | 3.7% |
| 15-19 | 672,557 | 4.0% | 639,134 | 3.8% |
| 20-24 | 679,254 | 4.0% | 655,158 | 3.9% |
| 25-29 | 774,830 | 4.6% | 757,910 | 4.5% |
| 30-34 | 781,544 | 4.6% | 771,887 | 4.5% |
| 35-39 | 685,982 | 4.0% | 686,539 | 4.0% |
| 40-44 | 578,047 | 3.4% | 588,457 | 3.5% |
| 45-49 | 448,232 | 2.6% | 458,350 | 2.7% |
| 50-54 | 352,082 | 2.1% | 369,970 | 2.2% |
| 55-59 | 318,069 | 1.9% | 343,521 | 2.0% |
| 60-64 | 292,996 | 1.7% | 334,835 | 2.0% |
| 65-69 | 258,436 | 1.5% | 312,833 | 1.8% |
| 70-74 | 184,088 | 1.1% | 242,882 | 1.4% |
| 75-79 | 130,581 | 0.8% | 203,433 | 1.2% |
| 80-84 | 75,819 | 0.4% | 141,899 | 0.8% |
| 85 | 46,547 | 0.3% | 120,058 | 0.7% |
Source: Census 2000 analyzed by the Social Science Data Analysis Network (SSDAN).