| | Martic, PA | Blairsville, GA | United States |
| Population | 5,235 | 825 | 329,725,481 |
| Female Population | 46.3% | 38.3% | 50.5% |
| Male Population | 53.7% | 61.7% | 49.5% |
| Median Age | 40.1 | 37.6 | 38.4 |
| space3 | | | |
| Population - 2010 | 5,197 | 611 | 309,327,143 |
| Population - 2000 | 4,990 | 659 | 285,036,114 |
| Population - 1990 | 4,362 | 564 | 251,960,433 |
| Pop. 2000 to Now | 3.8% | -0.6% | 15.6% |
| Pop. 1990 to Now | 18.7% | 16.1% | 30.8% |
| space4 | | | |
| Population Density | 180.3 | 745.9 | 93.4 |
| Land Area | 29.0 | 1.1 | 3,531,905.4 |
| Water Area | 3.6 | 0.0 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Martic, PA | Blairsville, GA | United States |
| Age 0 to 4 | 10.0% | 9.8% | 5.9% |
| Age 5 to 9 | 10.0% | 7.2% | 6.1% |
| Age 10 to 14 | 6.4% | 2.9% | 6.6% |
| Age 15 to 17 | 2.6% | 0.2% | 3.9% |
| Age 18 to 20 | 3.3% | 2.1% | 4.0% |
| Age 21 to 24 | 4.1% | 5.2% | 5.2% |
| Age 25 to 34 | 8.7% | 20.6% | 13.8% |
| Age 35 to 44 | 10.0% | 13.7% | 12.9% |
| Age 45 to 54 | 17.5% | 14.3% | 12.6% |
| Age 55 to 59 | 9.3% | 8.7% | 6.7% |
| Age 60 to 64 | 5.4% | 2.7% | 6.3% |
| Age 65 to 74 | 6.9% | 8.4% | 9.6% |
| Age 75 to 84 | 4.5% | 2.2% | 4.5% |
| Age 85 and over | 1.4% | 2.1% | 1.9% |
| space1 | | | |
| Race | | | |
| | Martic, PA | Blairsville, GA | United States |
| White | 96.9% | 65.6% | 59.4% |
| Black | 0.3% | 12.2% | 12.2% |
| Asian | 0.0% | 0.0% | 5.6% |
| Native American | 0.2% | 1.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 1.0% | 0.0% | 0.4% |
| Two or More Races | 0.0% | 2.7% | 3.2% |
| Hispanic | 1.7% | 18.5% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Martic, PA | Blairsville, GA | United States |
| Married Population | 70.1% | 37.2% | 49.8% |
| Currently Married | 69.4% | 36.3% | 48.0% |
| Married but Separated | 0.6% | 0.9% | 1.8% |
| Single Population | 29.9% | 62.8% | 50.2% |
| Never Married | 18.0% | 40.7% | 33.8% |
| Divorced | 6.8% | 18.2% | 10.8% |
| Widowed | 5.1% | 3.9% | 5.6% |
| space5 | | | |
| Household Size | 2.84 | 2.49 | 2.60 |
| Households | 1,844 | 224 | 124,010,992 |
| Family Households | 1,521 | 141 | 80,755,759 |
| Married couple, w/children | 29.3% | 9.2% | 30.5% |
| Married couple, no children | 57.5% | 44.0% | 42.9% |
| Non Family Households | 323 | 83 | 43,255,233 |
| Single householder, w/children | 9.3% | 45.4% | 15.8% |
| Single householder, no children | 3.9% | 1.4% | 10.8% |