| | Richmond, RI | Medford, MA | United States |
| Population | 8,064 | 60,708 | 329,725,481 |
| Female Population | 49.3% | 52.0% | 50.5% |
| Male Population | 50.7% | 48.0% | 49.5% |
| Median Age | 43.9 | 35.7 | 38.4 |
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| Population - 2010 | 7,707 | 56,401 | 309,327,143 |
| Population - 2000 | 7,222 | 55,765 | 285,036,114 |
| Population - 1990 | 5,351 | 57,407 | 251,960,433 |
| Pop. 2000 to Now | 9.2% | 9.1% | 15.6% |
| Pop. 1990 to Now | 47.4% | 6.0% | 30.8% |
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| Population Density | 200.1 | 7,495.7 | 93.4 |
| Land Area | 40.3 | 8.1 | 3,531,905.4 |
| Water Area | 0.4 | 0.6 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Richmond, RI | Medford, MA | United States |
| Age 0 to 4 | 5.6% | 4.2% | 5.9% |
| Age 5 to 9 | 6.5% | 3.4% | 6.1% |
| Age 10 to 14 | 7.4% | 3.8% | 6.6% |
| Age 15 to 17 | 3.9% | 2.8% | 3.9% |
| Age 18 to 20 | 2.2% | 4.6% | 4.0% |
| Age 21 to 24 | 3.2% | 8.4% | 5.2% |
| Age 25 to 34 | 13.2% | 21.4% | 13.8% |
| Age 35 to 44 | 8.6% | 12.7% | 12.9% |
| Age 45 to 54 | 17.1% | 11.6% | 12.6% |
| Age 55 to 59 | 9.1% | 6.6% | 6.7% |
| Age 60 to 64 | 9.9% | 5.7% | 6.3% |
| Age 65 to 74 | 9.7% | 9.1% | 9.6% |
| Age 75 to 84 | 2.6% | 3.3% | 4.5% |
| Age 85 and over | 1.1% | 2.5% | 1.9% |
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| Race | | | |
| | Richmond, RI | Medford, MA | United States |
| White | 93.7% | 68.4% | 59.4% |
| Black | 0.2% | 8.3% | 12.2% |
| Asian | 0.0% | 10.5% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.1% | 0.2% |
| Other | 0.0% | 0.9% | 0.4% |
| Two or More Races | 2.5% | 3.4% | 3.2% |
| Hispanic | 3.6% | 8.4% | 18.4% |
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| Marriage & Family | | | |
| | Richmond, RI | Medford, MA | United States |
| Married Population | 58.4% | 41.9% | 49.8% |
| Currently Married | 57.5% | 41.0% | 48.0% |
| Married but Separated | 0.8% | 0.9% | 1.8% |
| Single Population | 41.6% | 58.1% | 50.2% |
| Never Married | 25.0% | 45.9% | 33.8% |
| Divorced | 13.7% | 7.0% | 10.8% |
| Widowed | 3.0% | 5.3% | 5.6% |
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| Household Size | 2.71 | 2.36 | 2.60 |
| Households | 2,961 | 24,765 | 124,010,992 |
| Family Households | 2,284 | 13,710 | 80,755,759 |
| Married couple, w/children | 29.8% | 28.6% | 30.5% |
| Married couple, no children | 48.2% | 44.9% | 42.9% |
| Non Family Households | 677 | 11,055 | 43,255,233 |
| Single householder, w/children | 18.1% | 9.2% | 15.8% |
| Single householder, no children | 3.9% | 17.4% | 10.8% |