| | Emlenton, PA | Florence, AZ | United States |
| Population | 656 | 25,356 | 329,725,481 |
| Female Population | 46.3% | 24.6% | 50.5% |
| Male Population | 53.7% | 75.4% | 49.5% |
| Median Age | 43.3 | 41.5 | 38.4 |
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| Population - 2010 | 629 | 26,156 | 309,327,143 |
| Population - 2000 | 784 | 17,054 | 285,036,114 |
| Population - 1990 | 834 | 7,510 | 251,960,433 |
| Pop. 2000 to Now | -27.7% | 64.5% | 15.6% |
| Pop. 1990 to Now | -32.0% | 273.5% | 30.8% |
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| Population Density | 1,127.2 | 404.9 | 93.4 |
| Land Area | 0.6 | 62.6 | 3,531,905.4 |
| Water Area | 0.0 | 0.0 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Emlenton, PA | Florence, AZ | United States |
| Age 0 to 4 | 4.3% | 1.8% | 5.9% |
| Age 5 to 9 | 4.9% | 2.0% | 6.1% |
| Age 10 to 14 | 5.3% | 3.4% | 6.6% |
| Age 15 to 17 | 3.8% | 0.9% | 3.9% |
| Age 18 to 20 | 1.5% | 1.9% | 4.0% |
| Age 21 to 24 | 7.0% | 4.5% | 5.2% |
| Age 25 to 34 | 13.7% | 21.6% | 13.8% |
| Age 35 to 44 | 15.4% | 19.6% | 12.9% |
| Age 45 to 54 | 13.9% | 10.8% | 12.6% |
| Age 55 to 59 | 6.7% | 7.4% | 6.7% |
| Age 60 to 64 | 3.0% | 7.7% | 6.3% |
| Age 65 to 74 | 11.3% | 12.4% | 9.6% |
| Age 75 to 84 | 6.7% | 4.7% | 4.5% |
| Age 85 and over | 2.4% | 1.4% | 1.9% |
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| Race | | | |
| | Emlenton, PA | Florence, AZ | United States |
| White | 94.4% | 47.7% | 59.4% |
| Black | 0.5% | 9.4% | 12.2% |
| Asian | 3.0% | 0.5% | 5.6% |
| Native American | 0.2% | 3.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.6% | 0.2% |
| Other | 0.0% | 0.1% | 0.4% |
| Two or More Races | 1.1% | 1.6% | 3.2% |
| Hispanic | 0.9% | 37.2% | 18.4% |
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| Marriage & Family | | | |
| | Emlenton, PA | Florence, AZ | United States |
| Married Population | 59.0% | 34.8% | 49.8% |
| Currently Married | 53.1% | 32.3% | 48.0% |
| Married but Separated | 5.9% | 2.5% | 1.8% |
| Single Population | 41.0% | 65.2% | 50.2% |
| Never Married | 26.7% | 42.5% | 33.8% |
| Divorced | 9.1% | 18.3% | 10.8% |
| Widowed | 5.2% | 4.4% | 5.6% |
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| Household Size | 2.29 | 2.40 | 2.60 |
| Households | 286 | 5,053 | 124,010,992 |
| Family Households | 182 | 3,307 | 80,755,759 |
| Married couple, w/children | 37.9% | 18.2% | 30.5% |
| Married couple, no children | 44.5% | 60.9% | 42.9% |
| Non Family Households | 104 | 1,746 | 43,255,233 |
| Single householder, w/children | 8.2% | 12.5% | 15.8% |
| Single householder, no children | 9.3% | 8.4% | 10.8% |