| | Fortuna Foothills, AZ | Porterville, CA | United States |
| Population | 26,727 | 62,164 | 329,725,481 |
| Female Population | 49.8% | 49.4% | 50.5% |
| Male Population | 50.2% | 50.6% | 49.5% |
| Median Age | 60.9 | 31.8 | 38.4 |
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| Population - 2010 | 27,427 | 58,225 | 309,327,143 |
| Population - 2000 | 20,478 | 39,615 | 285,036,114 |
| Population - 1990 | 7,737 | 29,563 | 251,960,433 |
| Pop. 2000 to Now | 46.2% | 48.8% | 15.6% |
| Pop. 1990 to Now | 286.9% | 99.4% | 30.8% |
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| Population Density | 667.1 | 3,333.7 | 93.4 |
| Land Area | 40.1 | 18.6 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Fortuna Foothills, AZ | Porterville, CA | United States |
| Age 0 to 4 | 4.2% | 6.7% | 5.9% |
| Age 5 to 9 | 4.1% | 7.2% | 6.1% |
| Age 10 to 14 | 4.7% | 10.2% | 6.6% |
| Age 15 to 17 | 2.2% | 5.8% | 3.9% |
| Age 18 to 20 | 1.6% | 4.4% | 4.0% |
| Age 21 to 24 | 2.7% | 6.3% | 5.2% |
| Age 25 to 34 | 10.1% | 13.3% | 13.8% |
| Age 35 to 44 | 7.8% | 13.6% | 12.9% |
| Age 45 to 54 | 7.2% | 10.5% | 12.6% |
| Age 55 to 59 | 4.2% | 5.4% | 6.7% |
| Age 60 to 64 | 6.0% | 3.7% | 6.3% |
| Age 65 to 74 | 20.4% | 7.7% | 9.6% |
| Age 75 to 84 | 20.9% | 3.5% | 4.5% |
| Age 85 and over | 3.8% | 1.6% | 1.9% |
| space1 | | | |
| Race | | | |
| | Fortuna Foothills, AZ | Porterville, CA | United States |
| White | 65.7% | 21.5% | 59.4% |
| Black | 1.9% | 0.4% | 12.2% |
| Asian | 0.9% | 5.0% | 5.6% |
| Native American | 0.4% | 0.6% | 0.6% |
| Hawaiian, Pacific Islander | 0.1% | 0.2% | 0.2% |
| Other | 0.4% | 0.2% | 0.4% |
| Two or More Races | 2.0% | 2.1% | 3.2% |
| Hispanic | 28.6% | 70.0% | 18.4% |
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| Marriage & Family | | | |
| | Fortuna Foothills, AZ | Porterville, CA | United States |
| Married Population | 62.9% | 46.4% | 49.8% |
| Currently Married | 61.6% | 44.0% | 48.0% |
| Married but Separated | 1.3% | 2.4% | 1.8% |
| Single Population | 37.1% | 53.6% | 50.2% |
| Never Married | 15.0% | 40.5% | 33.8% |
| Divorced | 11.8% | 8.3% | 10.8% |
| Widowed | 10.3% | 4.8% | 5.6% |
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| Household Size | 2.14 | 3.33 | 2.60 |
| Households | 12,507 | 18,305 | 124,010,992 |
| Family Households | 7,949 | 14,248 | 80,755,759 |
| Married couple, w/children | 17.4% | 34.2% | 30.5% |
| Married couple, no children | 70.4% | 28.7% | 42.9% |
| Non Family Households | 4,558 | 4,057 | 43,255,233 |
| Single householder, w/children | 6.3% | 27.1% | 15.8% |
| Single householder, no children | 5.8% | 10.0% | 10.8% |