In 2019, Middlesex County, MA had a population of 1.61M people with a median age of 38.8 and a median household income of $107,056. Between 2018 and 2019 the population of Middlesex County, MA declined from 1.61M to 1.61M, a −0.187% decrease and its median household income grew from $100,517 to $107,056, a 6.51% increase.
The 5 largest ethnic groups in Middlesex County, MA are White (Non-Hispanic) (70.4%), Asian (Non-Hispanic) (12.4%), Black or African American (Non-Hispanic) (5.16%), White (Hispanic) (4.88%), and Two+ (Non-Hispanic) (2.44%). 26.9% of the households in Middlesex County, MA speak a non-English language at home as their primary language.
89.4% of the residents in Middlesex County, MA are U.S. citizens.
The largest universities in Middlesex County, MA are Harvard University (9,947 degrees awarded in 2020), Boston College (4,890 degrees), and University of Massachusetts-Lowell (4,785 degrees).
In 2019, the median property value in Middlesex County, MA was $569,800, and the homeownership rate was 61.9%. Most people in Middlesex County, MA drove alone to work, and the average commute time was 30.1 minutes. The average car ownership in Middlesex County, MA was 2 cars per household.
Middlesex County, MA borders Essex County, MA, Norfolk County, MA, Suffolk County, MA, Worcester County, MA, and Hillsborough County, NH.