Middlesex County's estimated 2025 population is 1,638,268 with a growth rate of 0.44% in the past year according to the most recent United States census data. Middlesex County is the 1st largest county in Massachusetts. The 2010 population was 1,507,694 and has seen a growth of 8.66% since that time.
Data after 2023 is projected based on recent change
The racial composition of Middlesex County includes 68.96% White, 13.18% Asian, 5.03% Black or African American, 4.19% other race, and smaller percentages for Native American, Native Hawaiian or Pacific Islander and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 1,119,143 | 68.96% |
| Asian | 213,947 | 13.18% |
| Two or more races | 136,496 | 8.41% |
| Black or African American | 81,701 | 5.03% |
| Other race | 67,932 | 4.19% |
| Native American | 3,038 | 0.19% |
| Native Hawaiian or Pacific Islander | 639 | 0.04% |
Married
Widowed
Divorced
Separated
Never Married
Middlesex County's average per capita income is $76,704. Household income levels show a median of $126,779. The poverty rate stands at 7.52%.
Name | Median | Mean |
|---|---|---|
| Married Families | $184,080 | $234,937 |
| Families | $160,640 | $208,189 |
| Households | $126,779 | $172,162 |
| Non Families | $76,523 | $103,968 |
Average Income
Median Household Income
Poverty Rate