| | Newington, CT | Meriden, CT | United States |
| Population | 30,493 | 60,790 | 329,725,481 |
| Female Population | 51.8% | 52.1% | 50.5% |
| Male Population | 48.2% | 47.9% | 49.5% |
| Median Age | 46.1 | 40.2 | 38.4 |
| space3 | | | |
| Population - 2010 | 30,527 | 60,833 | 309,327,143 |
| Population - 2000 | 29,306 | 58,244 | 285,036,114 |
| Population - 1990 | 29,208 | 59,479 | 251,960,433 |
| Pop. 2000 to Now | 1.9% | 1.3% | 15.6% |
| Pop. 1990 to Now | 2.3% | -0.8% | 30.8% |
| space4 | | | |
| Population Density | 2,320.5 | 2,554.3 | 93.4 |
| Land Area | 13.1 | 23.8 | 3,531,905.4 |
| Water Area | 0.0 | 0.4 | 264,836.8 |
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| Est. Total Population By Age | | | |
| | Newington, CT | Meriden, CT | United States |
| Age 0 to 4 | 4.1% | 5.6% | 5.9% |
| Age 5 to 9 | 3.8% | 6.4% | 6.1% |
| Age 10 to 14 | 5.7% | 5.3% | 6.6% |
| Age 15 to 17 | 3.4% | 3.1% | 3.9% |
| Age 18 to 20 | 3.1% | 3.8% | 4.0% |
| Age 21 to 24 | 4.7% | 5.2% | 5.2% |
| Age 25 to 34 | 12.4% | 14.2% | 13.8% |
| Age 35 to 44 | 11.6% | 13.2% | 12.9% |
| Age 45 to 54 | 15.5% | 12.4% | 12.6% |
| Age 55 to 59 | 7.6% | 7.7% | 6.7% |
| Age 60 to 64 | 7.2% | 8.1% | 6.3% |
| Age 65 to 74 | 11.3% | 8.7% | 9.6% |
| Age 75 to 84 | 6.2% | 3.8% | 4.5% |
| Age 85 and over | 3.3% | 2.5% | 1.9% |
| space1 | | | |
| Race | | | |
| | Newington, CT | Meriden, CT | United States |
| White | 75.0% | 49.9% | 59.4% |
| Black | 3.6% | 8.6% | 12.2% |
| Asian | 6.7% | 2.6% | 5.6% |
| Native American | 0.0% | 0.4% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.7% | 0.4% | 0.4% |
| Two or More Races | 4.5% | 2.6% | 3.2% |
| Hispanic | 9.5% | 35.6% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Newington, CT | Meriden, CT | United States |
| Married Population | 49.3% | 40.7% | 49.8% |
| Currently Married | 48.8% | 38.9% | 48.0% |
| Married but Separated | 0.4% | 1.8% | 1.8% |
| Single Population | 50.7% | 59.3% | 50.2% |
| Never Married | 32.0% | 39.5% | 33.8% |
| Divorced | 11.9% | 13.2% | 10.8% |
| Widowed | 6.8% | 6.6% | 5.6% |
| space5 | | | |
| Household Size | 2.39 | 2.37 | 2.60 |
| Households | 12,575 | 25,191 | 124,010,992 |
| Family Households | 8,214 | 14,785 | 80,755,759 |
| Married couple, w/children | 26.6% | 21.7% | 30.5% |
| Married couple, no children | 45.6% | 37.4% | 42.9% |
| Non Family Households | 4,361 | 10,406 | 43,255,233 |
| Single householder, w/children | 9.4% | 21.2% | 15.8% |
| Single householder, no children | 18.5% | 19.8% | 10.8% |