Middlesex County, MA Demographics

The total population of Middlesex County is estimated to be 1.62 million with 802,270 males (49.43%) and 820,839 females (50.57%). There are 18,569 more females than males in Middlesex County.
The median household income in Middlesex County was $120,835 in 2021, which marked an an increase of 493(0.41%) from $120,342 in 2020. This income is 161.96% of the U.S. median household income of $74,606 (all incomes in 2022 inflation-adjusted dollars).
Per the latest American Community Survey by the Census Bureau, Middlesex County sees its highest median household income among householders in the age group of 45 to 64 years old, at $147,680. Overall, the median household income for the county of Middlesex County stands at $118,800.
In Middlesex County, the median income for all workers aged 15 years and older, regardless of work hours, was $67,553 for males and $46,104 for females. However, when specifically considering full-time, year-round workers within the same age group, the median income was $97,971 for males and $81,245 for females.
In Middlesex County, the demographic landscape is diverse, spanning 6 distinct racial categories among households. Among these, American Indian and Alaska Native households have the highest median household income at $152,731, while Some Other Race households represent the opposite end with the lowest median household income of $67,479.
In 2022, the population of Middlesex County was 1,617,105, a 0.00% increase year-by-year from 2021. Previously, in 2021, Middlesex County's population was 1,617,099, a decline of 0.71% compared to a population of 1,628,671 in 2020.
The median age in Middlesex County, MA is 38.5, as per 2021 ACS 5-Year Estimates. Of the total population, 16.35% were under the age of 15, 20.90% aged 15 to 29, 47.54% aged 30 to 64, 13.10% aged 65 to 84, and 2.11% were 85 years of age and older.
Racial distribution of Middlesex County population: 72.93% are White, 5.14% are Black or African American, 0.19% are American Indian and Alaska Native, 12.71% are Asian, 0.05% are Native Hawaiian and other Pacific Islander, 3.35% are some other race and 5.63% are multiracial.