| | Farmington, MN | Richmond Hill, GA | United States |
| Population | 23,253 | 15,900 | 329,725,481 |
| Female Population | 50.5% | 51.1% | 50.5% |
| Male Population | 49.5% | 48.9% | 49.5% |
| Median Age | 34.6 | 32.2 | 38.4 |
| space3 | | | |
| Population - 2010 | 21,150 | 9,479 | 309,327,143 |
| Population - 2000 | 12,365 | 6,959 | 285,036,114 |
| Population - 1990 | 5,940 | 2,934 | 251,960,433 |
| Pop. 2000 to Now | 86.3% | 107.0% | 15.6% |
| Pop. 1990 to Now | 287.8% | 391.1% | 30.8% |
| space4 | | | |
| Population Density | 1,590.9 | 675.2 | 93.4 |
| Land Area | 14.6 | 23.5 | 3,531,905.4 |
| Water Area | 0.3 | 0.8 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Farmington, MN | Richmond Hill, GA | United States |
| Age 0 to 4 | 8.3% | 8.7% | 5.9% |
| Age 5 to 9 | 7.9% | 9.4% | 6.1% |
| Age 10 to 14 | 8.7% | 9.4% | 6.6% |
| Age 15 to 17 | 6.7% | 5.7% | 3.9% |
| Age 18 to 20 | 2.5% | 2.4% | 4.0% |
| Age 21 to 24 | 3.8% | 3.9% | 5.2% |
| Age 25 to 34 | 13.2% | 13.1% | 13.8% |
| Age 35 to 44 | 15.6% | 19.7% | 12.9% |
| Age 45 to 54 | 14.7% | 11.8% | 12.6% |
| Age 55 to 59 | 5.6% | 5.4% | 6.7% |
| Age 60 to 64 | 5.1% | 3.6% | 6.3% |
| Age 65 to 74 | 4.4% | 3.2% | 9.6% |
| Age 75 to 84 | 2.3% | 2.7% | 4.5% |
| Age 85 and over | 1.3% | 0.9% | 1.9% |
| space1 | | | |
| Race | | | |
| | Farmington, MN | Richmond Hill, GA | United States |
| White | 85.7% | 63.7% | 59.4% |
| Black | 2.2% | 15.3% | 12.2% |
| Asian | 2.4% | 2.6% | 5.6% |
| Native American | 0.5% | 0.2% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.1% | 0.6% | 0.4% |
| Two or More Races | 3.1% | 4.0% | 3.2% |
| Hispanic | 5.9% | 13.7% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Farmington, MN | Richmond Hill, GA | United States |
| Married Population | 55.2% | 56.0% | 49.8% |
| Currently Married | 54.9% | 53.6% | 48.0% |
| Married but Separated | 0.3% | 2.4% | 1.8% |
| Single Population | 44.8% | 44.0% | 50.2% |
| Never Married | 30.1% | 25.7% | 33.8% |
| Divorced | 11.0% | 15.0% | 10.8% |
| Widowed | 3.7% | 3.4% | 5.6% |
| space5 | | | |
| Household Size | 2.92 | 2.81 | 2.60 |
| Households | 7,932 | 5,632 | 124,010,992 |
| Family Households | 6,026 | 4,107 | 80,755,759 |
| Married couple, w/children | 39.7% | 48.8% | 30.5% |
| Married couple, no children | 36.7% | 23.7% | 42.9% |
| Non Family Households | 1,906 | 1,525 | 43,255,233 |
| Single householder, w/children | 19.9% | 24.8% | 15.8% |
| Single householder, no children | 3.7% | 2.7% | 10.8% |