| | Riviera Beach, FL | Peabody, MA | United States |
| Population | 37,301 | 54,200 | 329,725,481 |
| Female Population | 51.8% | 52.2% | 50.5% |
| Male Population | 48.2% | 47.8% | 49.5% |
| Median Age | 37.4 | 46.5 | 38.4 |
| space3 | | | |
| Population - 2010 | 32,589 | 51,406 | 309,327,143 |
| Population - 2000 | 29,884 | 48,129 | 285,036,114 |
| Population - 1990 | 27,639 | 47,039 | 251,960,433 |
| Pop. 2000 to Now | 19.3% | 10.3% | 15.6% |
| Pop. 1990 to Now | 29.0% | 12.8% | 30.8% |
| space4 | | | |
| Population Density | 4,512.6 | 3,340.5 | 93.4 |
| Land Area | 8.3 | 16.2 | 3,531,905.4 |
| Water Area | 1.4 | 0.6 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Riviera Beach, FL | Peabody, MA | United States |
| Age 0 to 4 | 7.1% | 6.2% | 5.9% |
| Age 5 to 9 | 7.0% | 3.9% | 6.1% |
| Age 10 to 14 | 6.1% | 4.8% | 6.6% |
| Age 15 to 17 | 3.7% | 2.9% | 3.9% |
| Age 18 to 20 | 3.6% | 2.9% | 4.0% |
| Age 21 to 24 | 4.6% | 5.1% | 5.2% |
| Age 25 to 34 | 14.3% | 12.4% | 13.8% |
| Age 35 to 44 | 10.6% | 10.4% | 12.9% |
| Age 45 to 54 | 10.7% | 13.0% | 12.6% |
| Age 55 to 59 | 7.1% | 8.9% | 6.7% |
| Age 60 to 64 | 7.7% | 6.6% | 6.3% |
| Age 65 to 74 | 8.5% | 11.1% | 9.6% |
| Age 75 to 84 | 6.4% | 6.0% | 4.5% |
| Age 85 and over | 2.5% | 5.8% | 1.9% |
| space1 | | | |
| Race | | | |
| | Riviera Beach, FL | Peabody, MA | United States |
| White | 21.4% | 81.0% | 59.4% |
| Black | 65.3% | 3.0% | 12.2% |
| Asian | 2.5% | 1.3% | 5.6% |
| Native American | 0.1% | 0.2% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.2% | 0.2% | 0.4% |
| Two or More Races | 3.2% | 2.9% | 3.2% |
| Hispanic | 7.4% | 11.5% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Riviera Beach, FL | Peabody, MA | United States |
| Married Population | 35.5% | 51.7% | 49.8% |
| Currently Married | 33.0% | 50.4% | 48.0% |
| Married but Separated | 2.5% | 1.4% | 1.8% |
| Single Population | 64.5% | 48.3% | 50.2% |
| Never Married | 41.7% | 28.3% | 33.8% |
| Divorced | 14.3% | 10.8% | 10.8% |
| Widowed | 8.5% | 9.1% | 5.6% |
| space5 | | | |
| Household Size | 2.76 | 2.35 | 2.60 |
| Households | 13,377 | 22,808 | 124,010,992 |
| Family Households | 8,191 | 14,304 | 80,755,759 |
| Married couple, w/children | 22.0% | 27.5% | 30.5% |
| Married couple, no children | 30.8% | 47.9% | 42.9% |
| Non Family Households | 5,186 | 8,504 | 43,255,233 |
| Single householder, w/children | 25.9% | 10.9% | 15.8% |
| Single householder, no children | 21.2% | 13.7% | 10.8% |