| Age Group | Male | Female | Maricopa County, Arizona, 2020, Universe: 001 Total population Universe Population: 4,420,568 | ||
| Population | Pct | Population | Pct | ![]() | |
| Total | 2,197,784 | 49.7 | 2,222,784 | 50.3 | |
| 0- 4 | 135,163 | 3.1 | 129,134 | 2.9 | |
| 5- 9 | 145,449 | 3.3 | 138,988 | 3.1 | |
| 10-14 | 158,187 | 3.6 | 151,724 | 3.4 | |
| 15-19 | 153,470 | 3.5 | 146,000 | 3.3 | |
| 20-24 | 146,598 | 3.3 | 141,330 | 3.2 | |
| 25-29 | 164,500 | 3.7 | 160,001 | 3.6 | |
| 30-34 | 161,591 | 3.7 | 155,336 | 3.5 | |
| 35-39 | 153,418 | 3.5 | 148,364 | 3.4 | |
| 40-44 | 141,267 | 3.2 | 140,044 | 3.2 | |
| 45-49 | 139,327 | 3.2 | 140,030 | 3.2 | |
| 50-54 | 135,425 | 3.1 | 134,894 | 3.1 | |
| 55-59 | 133,791 | 3.0 | 137,604 | 3.1 | |
| 60-64 | 119,726 | 2.7 | 128,331 | 2.9 | |
| 65-69 | 99,796 | 2.3 | 114,067 | 2.6 | |
| 70-74 | 86,245 | 2.0 | 100,451 | 2.3 | |
| 75-79 | 58,774 | 1.3 | 69,413 | 1.6 | |
| 80-84 | 35,914 | 0.8 | 43,571 | 1.0 | |
| 85+ | 29,143 | 0.7 | 43,502 | 1.0 | |
| ChartGraphics ... Population Pyramids | |||||