| | Meriden, CT | Middletown, CT | United States |
| Population | 60,790 | 47,164 | 329,725,481 |
| Female Population | 52.1% | 51.5% | 50.5% |
| Male Population | 47.9% | 48.5% | 49.5% |
| Median Age | 40.2 | 39.5 | 38.4 |
| space3 | | | |
| Population - 2010 | 60,833 | 47,659 | 309,327,143 |
| Population - 2000 | 58,244 | 43,167 | 285,036,114 |
| Population - 1990 | 59,479 | 42,762 | 251,960,433 |
| Pop. 2000 to Now | 1.3% | 6.6% | 15.6% |
| Pop. 1990 to Now | -0.8% | 7.6% | 30.8% |
| space4 | | | |
| Population Density | 2,554.3 | 1,149.8 | 93.4 |
| Land Area | 23.8 | 41.0 | 3,531,905.4 |
| Water Area | 0.4 | 1.3 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Meriden, CT | Middletown, CT | United States |
| Age 0 to 4 | 5.6% | 3.9% | 5.9% |
| Age 5 to 9 | 6.4% | 4.5% | 6.1% |
| Age 10 to 14 | 5.3% | 4.4% | 6.6% |
| Age 15 to 17 | 3.1% | 2.7% | 3.9% |
| Age 18 to 20 | 3.8% | 7.2% | 4.0% |
| Age 21 to 24 | 5.2% | 6.9% | 5.2% |
| Age 25 to 34 | 14.2% | 15.7% | 13.8% |
| Age 35 to 44 | 13.2% | 11.1% | 12.9% |
| Age 45 to 54 | 12.4% | 12.4% | 12.6% |
| Age 55 to 59 | 7.7% | 7.8% | 6.7% |
| Age 60 to 64 | 8.1% | 7.1% | 6.3% |
| Age 65 to 74 | 8.7% | 9.1% | 9.6% |
| Age 75 to 84 | 3.8% | 4.8% | 4.5% |
| Age 85 and over | 2.5% | 2.3% | 1.9% |
| space1 | | | |
| Race | | | |
| | Meriden, CT | Middletown, CT | United States |
| White | 49.9% | 66.2% | 59.4% |
| Black | 8.6% | 13.3% | 12.2% |
| Asian | 2.6% | 5.6% | 5.6% |
| Native American | 0.4% | 0.1% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.0% | 0.2% |
| Other | 0.4% | 0.1% | 0.4% |
| Two or More Races | 2.6% | 3.9% | 3.2% |
| Hispanic | 35.6% | 10.9% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Meriden, CT | Middletown, CT | United States |
| Married Population | 40.7% | 39.5% | 49.8% |
| Currently Married | 38.9% | 38.8% | 48.0% |
| Married but Separated | 1.8% | 0.7% | 1.8% |
| Single Population | 59.3% | 60.5% | 50.2% |
| Never Married | 39.5% | 42.1% | 33.8% |
| Divorced | 13.2% | 12.9% | 10.8% |
| Widowed | 6.6% | 5.4% | 5.6% |
| space5 | | | |
| Household Size | 2.37 | 2.14 | 2.60 |
| Households | 25,191 | 20,089 | 124,010,992 |
| Family Households | 14,785 | 10,531 | 80,755,759 |
| Married couple, w/children | 21.7% | 22.8% | 30.5% |
| Married couple, no children | 37.4% | 46.7% | 42.9% |
| Non Family Households | 10,406 | 9,558 | 43,255,233 |
| Single householder, w/children | 21.2% | 18.1% | 15.8% |
| Single householder, no children | 19.8% | 12.4% | 10.8% |