| | Greenwood, FL | Pittsburg, CA | United States |
| Population | 617 | 75,701 | 329,725,481 |
| Female Population | 46.7% | 50.3% | 50.5% |
| Male Population | 53.3% | 49.7% | 49.5% |
| Median Age | 39.1 | 35.1 | 38.4 |
| space3 | | | |
| Population - 2010 | 684 | 63,475 | 309,327,143 |
| Population - 2000 | 735 | 56,769 | 285,036,114 |
| Population - 1990 | 474 | 47,564 | 251,960,433 |
| Pop. 2000 to Now | -11.4% | 27.9% | 15.6% |
| Pop. 1990 to Now | 37.3% | 52.7% | 30.8% |
| space4 | | | |
| Population Density | 135.2 | 4,365.7 | 93.4 |
| Land Area | 4.6 | 17.3 | 3,531,905.4 |
| Water Area | 0.0 | 2.1 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Greenwood, FL | Pittsburg, CA | United States |
| Age 0 to 4 | 7.9% | 6.9% | 5.9% |
| Age 5 to 9 | 4.4% | 5.5% | 6.1% |
| Age 10 to 14 | 6.2% | 6.2% | 6.6% |
| Age 15 to 17 | 7.1% | 4.1% | 3.9% |
| Age 18 to 20 | 3.9% | 4.1% | 4.0% |
| Age 21 to 24 | 9.4% | 6.4% | 5.2% |
| Age 25 to 34 | 7.5% | 16.7% | 13.8% |
| Age 35 to 44 | 10.9% | 13.4% | 12.9% |
| Age 45 to 54 | 11.2% | 12.1% | 12.6% |
| Age 55 to 59 | 10.0% | 5.7% | 6.7% |
| Age 60 to 64 | 7.6% | 6.4% | 6.3% |
| Age 65 to 74 | 9.2% | 8.0% | 9.6% |
| Age 75 to 84 | 3.7% | 3.3% | 4.5% |
| Age 85 and over | 1.0% | 1.2% | 1.9% |
| space1 | | | |
| Race | | | |
| | Greenwood, FL | Pittsburg, CA | United States |
| White | 54.1% | 19.2% | 59.4% |
| Black | 34.4% | 13.3% | 12.2% |
| Asian | 0.0% | 17.9% | 5.6% |
| Native American | 0.0% | 0.2% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.7% | 0.2% |
| Other | 0.0% | 0.7% | 0.4% |
| Two or More Races | 4.5% | 4.2% | 3.2% |
| Hispanic | 7.0% | 43.9% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Greenwood, FL | Pittsburg, CA | United States |
| Married Population | 26.4% | 47.3% | 49.8% |
| Currently Married | 26.4% | 45.1% | 48.0% |
| Married but Separated | 0.0% | 2.2% | 1.8% |
| Single Population | 73.6% | 52.7% | 50.2% |
| Never Married | 46.5% | 39.7% | 33.8% |
| Divorced | 19.7% | 9.0% | 10.8% |
| Widowed | 7.4% | 4.0% | 5.6% |
| space5 | | | |
| Household Size | 3.09 | 3.33 | 2.60 |
| Households | 200 | 22,604 | 124,010,992 |
| Family Households | 132 | 17,678 | 80,755,759 |
| Married couple, w/children | 22.7% | 31.5% | 30.5% |
| Married couple, no children | 26.5% | 35.3% | 42.9% |
| Non Family Households | 68 | 4,926 | 43,255,233 |
| Single householder, w/children | 31.8% | 18.2% | 15.8% |
| Single householder, no children | 18.9% | 15.0% | 10.8% |