| | Puyallup, WA | El Cajon, CA | United States |
| Population | 42,366 | 106,043 | 329,725,481 |
| Female Population | 51.5% | 50.8% | 50.5% |
| Male Population | 48.5% | 49.3% | 49.5% |
| Median Age | 37.3 | 34.8 | 38.4 |
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| Population - 2010 | 37,228 | 99,815 | 309,327,143 |
| Population - 2000 | 33,011 | 94,869 | 285,036,114 |
| Population - 1990 | 23,875 | 88,693 | 251,960,433 |
| Pop. 2000 to Now | 29.0% | 7.9% | 15.6% |
| Pop. 1990 to Now | 78.3% | 15.5% | 30.8% |
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| Population Density | 2,996.4 | 7,320.9 | 93.4 |
| Land Area | 14.1 | 14.5 | 3,531,905.4 |
| Water Area | 0.1 | 0.0 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Puyallup, WA | El Cajon, CA | United States |
| Age 0 to 4 | 6.4% | 7.2% | 5.9% |
| Age 5 to 9 | 5.7% | 6.6% | 6.1% |
| Age 10 to 14 | 6.6% | 7.4% | 6.6% |
| Age 15 to 17 | 3.8% | 4.2% | 3.9% |
| Age 18 to 20 | 2.9% | 3.9% | 4.0% |
| Age 21 to 24 | 4.6% | 5.3% | 5.2% |
| Age 25 to 34 | 17.6% | 15.7% | 13.8% |
| Age 35 to 44 | 13.3% | 14.0% | 12.9% |
| Age 45 to 54 | 12.9% | 10.9% | 12.6% |
| Age 55 to 59 | 5.6% | 5.8% | 6.7% |
| Age 60 to 64 | 6.1% | 6.2% | 6.3% |
| Age 65 to 74 | 7.6% | 7.9% | 9.6% |
| Age 75 to 84 | 4.9% | 3.4% | 4.5% |
| Age 85 and over | 2.0% | 1.6% | 1.9% |
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| Race | | | |
| | Puyallup, WA | El Cajon, CA | United States |
| White | 75.5% | 56.7% | 59.4% |
| Black | 3.7% | 6.2% | 12.2% |
| Asian | 6.1% | 4.3% | 5.6% |
| Native American | 0.5% | 0.1% | 0.6% |
| Hawaiian, Pacific Islander | 0.7% | 0.5% | 0.2% |
| Other | 0.2% | 0.4% | 0.4% |
| Two or More Races | 6.8% | 4.7% | 3.2% |
| Hispanic | 6.4% | 27.1% | 18.4% |
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| Marriage & Family | | | |
| | Puyallup, WA | El Cajon, CA | United States |
| Married Population | 48.4% | 46.3% | 49.8% |
| Currently Married | 47.3% | 43.9% | 48.0% |
| Married but Separated | 1.1% | 2.4% | 1.8% |
| Single Population | 51.6% | 53.7% | 50.2% |
| Never Married | 33.6% | 37.6% | 33.8% |
| Divorced | 13.2% | 10.5% | 10.8% |
| Widowed | 4.8% | 5.7% | 5.6% |
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| Household Size | 2.54 | 2.96 | 2.60 |
| Households | 16,405 | 35,003 | 124,010,992 |
| Family Households | 10,181 | 25,018 | 80,755,759 |
| Married couple, w/children | 31.3% | 34.1% | 30.5% |
| Married couple, no children | 43.0% | 30.9% | 42.9% |
| Non Family Households | 6,224 | 9,985 | 43,255,233 |
| Single householder, w/children | 17.6% | 20.4% | 15.8% |
| Single householder, no children | 8.0% | 14.6% | 10.8% |