| | Palm City, FL | Murphy, TX | United States |
| Population | 25,486 | 20,655 | 329,725,481 |
| Female Population | 53.4% | 49.8% | 50.5% |
| Male Population | 46.6% | 50.2% | 49.5% |
| Median Age | 51 | 39.6 | 38.4 |
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| Population - 2010 | 23,095 | 18,067 | 309,327,143 |
| Population - 2000 | 20,097 | 3,099 | 285,036,114 |
| Population - 1990 | 3,925 | 1,547 | 251,960,433 |
| Pop. 2000 to Now | 27.1% | 572.6% | 15.6% |
| Pop. 1990 to Now | 550.9% | 1,247.4% | 30.8% |
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| Population Density | 1,837.6 | 3,634.5 | 93.4 |
| Land Area | 13.9 | 5.7 | 3,531,905.4 |
| Water Area | 2.6 | 0.0 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Palm City, FL | Murphy, TX | United States |
| Age 0 to 4 | 3.9% | 4.2% | 5.9% |
| Age 5 to 9 | 4.9% | 8.2% | 6.1% |
| Age 10 to 14 | 6.1% | 11.5% | 6.6% |
| Age 15 to 17 | 3.2% | 7.3% | 3.9% |
| Age 18 to 20 | 3.5% | 4.4% | 4.0% |
| Age 21 to 24 | 3.5% | 3.7% | 5.2% |
| Age 25 to 34 | 5.8% | 5.8% | 13.8% |
| Age 35 to 44 | 11.6% | 14.2% | 12.9% |
| Age 45 to 54 | 13.7% | 21.0% | 12.6% |
| Age 55 to 59 | 7.4% | 4.8% | 6.7% |
| Age 60 to 64 | 7.6% | 5.4% | 6.3% |
| Age 65 to 74 | 13.6% | 6.4% | 9.6% |
| Age 75 to 84 | 10.8% | 3.0% | 4.5% |
| Age 85 and over | 4.4% | 0.1% | 1.9% |
| space1 | | | |
| Race | | | |
| | Palm City, FL | Murphy, TX | United States |
| White | 84.7% | 51.5% | 59.4% |
| Black | 0.9% | 11.6% | 12.2% |
| Asian | 2.5% | 28.5% | 5.6% |
| Native American | 0.0% | 0.5% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.4% | 0.0% | 0.4% |
| Two or More Races | 2.2% | 2.3% | 3.2% |
| Hispanic | 9.3% | 5.6% | 18.4% |
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| Marriage & Family | | | |
| | Palm City, FL | Murphy, TX | United States |
| Married Population | 63.2% | 64.6% | 49.8% |
| Currently Married | 62.0% | 64.1% | 48.0% |
| Married but Separated | 1.1% | 0.6% | 1.8% |
| Single Population | 36.8% | 35.4% | 50.2% |
| Never Married | 19.9% | 27.0% | 33.8% |
| Divorced | 9.8% | 5.1% | 10.8% |
| Widowed | 7.2% | 3.2% | 5.6% |
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| Household Size | 2.51 | 3.60 | 2.60 |
| Households | 10,093 | 5,731 | 124,010,992 |
| Family Households | 7,245 | 5,226 | 80,755,759 |
| Married couple, w/children | 27.8% | 58.0% | 30.5% |
| Married couple, no children | 62.1% | 31.7% | 42.9% |
| Non Family Households | 2,848 | 505 | 43,255,233 |
| Single householder, w/children | 4.7% | 4.4% | 15.8% |
| Single householder, no children | 5.4% | 5.9% | 10.8% |