County profile

Middlesex County

Massachusetts · ACS 2020–2024

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Latest estimates

At a glance

U.S. Census Bureau American Community Survey 5-year estimates.

Total population
1,638,365
Median household income
$130,847
People below poverty
7.7%
Median home value
$727,800

Income

The median income of households in Middlesex County, Massachusetts was $130,847. An estimated 3.7% of households had income below $10,000 a year and 31.1% had income of $200,000 or more.

Household Income in Middlesex County, Massachusetts in 2020-2024

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Percent
Less than $10,000 3.7
$10,000 to $14,999 2.3
$15,000 to $24,999 4
$25,000 to $34,999 3.7
$35,000 to $49,999 5.7
$50,000 to $74,999 10.1
$75,000 to $99,999 9.3
$100,000 to $149,999 17.1
$150,000 to $199,999 12.9
$200,000 or more 31.1

Median Earnings for Full-Time Year-Round Workers by Sex in Middlesex County, Massachusetts in 2020-2024

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Dollars
Male 103299
Female 84957

An estimated 82.7% of households received earnings. An estimated 25.8% of households received Social Security and an estimated 20.9 % of households received retirement income other than Social Security. The average income from Social Security was $26,375. These income sources are not mutually exclusive; that is, some households received income from more than one source.

Proportion of Households with Various Income Sources in Middlesex County, Massachusetts in 2020-2024

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Percent
Earnings 82.7
Social Security 25.8
Retirement income 20.9
Supplemental Security Income (SSI) 3.9
Cash public assistance income 2.9

Poverty and Participation in Government Programs

In 2020-2024, 7.7 % of people were in poverty. An estimated 7.9% of children under 18 were below the poverty level, compared with 9.2% of people 65 years old and over. An estimated 7.3% of people 18 to 64 years were below the poverty level.

Poverty Rates in Middlesex County, Massachusetts in 2020-2024

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Percent
People in poverty 7.7
Children under 18 years below poverty 7.9
People 65 years old and over below poverty 9.2
People 18 to 64 years below poverty 7.3

In 2020-2024, 9.3 % of households received SNAP (the Supplemental Nutrition Assistance Program). An estimated 40.1% of households that received SNAP had children under 18, and 47.3% of households that received SNAP had one or more people 60 years and over. An estimated 28.1% of all households receiving SNAP were families with a female householder and no spouse present.


Among the civilian noninstitutionalized population in Middlesex County, Massachusetts in 2020-2024, 97.6% had health insurance coverage and 2.4% did not have health insurance coverage. Private coverage was 79.5% and public coverage was 30.3%, respectively. The percentage of children under the age of 19 with no health insurance coverage was 1.6%.


In 2020-2024, Middlesex County, Massachusetts had a total population of 1,638,365 - 829,266 (50.6%) females and 809,099 (49.4%) males. The median age was 38.9 years. An estimated 19.5% of the population was under 18 years, 36% was 19 to 44 years, 25.4% was 45 to 64 years, and 16.3 % was 65 years and older.

Population by Age and Sex for Middlesex County, Massachusetts in 2020-2024

Male Female
Under 5 42371 40165
5 to 9 45740 42239
10 to 14 45693 45111
15 to 19 53352 51151
20 to 24 56428 55995
25 to 29 63149 60557
30 to 34 62969 60588
35 to 39 60323 60618
40 to 44 54347 53645
45 to 49 50373 50685
50 to 54 52165 53062
55 to 59 55229 53586
60 to 64 48628 53189
65 to 69 40903 43906
70 to 74 31674 38141
75 to 79 20439 26875
80 to 84 13498 18455
85 and over 11818 21298

Hispanic Origin and Race

For people reporting one race alone, 66.8% were White; 4.9% were Black or African American; 4.2% were American Indian and Alaska Native; 13.6% were Asian; 2.2% were Native Hawaiian and Other Pacific Islander, and 0% were Some Other Race. An estimated 10% reported Two or More Races. An estimated 9.3% of the people in Middlesex County, Massachusetts were Hispanic or Latino. An estimated 65.1% of the people in Middlesex County, Massachusetts were White alone, non-Hispanic. People of Hispanic origin may be of any race.


Households and Families

In 2020-2024, there were 634,215 households in Middlesex County, Massachusetts. The average household size was 2.49 people.

Married-couple households made up 50% of the households in Middlesex County, Massachusetts while cohabiting couple households made up 7.5% of households. Female householders with no spouse or partner present were 25.5% of all households, while 17% of households had male householders with no spouse or partner present. Some households had one person, as 11.4% of households were male householders living alone, and 15.1% were female householders living alone, for a total of 26.5% of all households.

In Middlesex County, Massachusetts, 29.2% of all households had one or more people under the age of 18; 30.1% of all households had one or more people 65 years and over.

Types of Households in Middlesex County, Massachusetts in 2020-2024

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Percent
Married-couple households 50
Cohabiting Couples 7.5
Male Householder
No spouse/partner present
17
Female Householder
No spouse/partner present
25.5

Marital Status

Among persons 15 and older, 51.3% of males and 47.8% of females were currently married.

Population 15 years and over Percent
Males
Percent
Females
Never married 39.5 35
Now married, except separated 51.3 47.8
Separated 1 1.3
Widowed 2.1 6.8
Divorced 6.1 9.1

Grandparents and Grandchildren

In Middlesex County, Massachusetts, 25,038 grandparents lived with their grandchildren under 18 years old. Of those grandparents, 15.1% were responsible for the basic needs of their grandchildren.


Nativity and Foreign-Born

In 2020-2024, an estimated 76.9% of the people living in Middlesex County, Massachusetts were U.S. natives. 52.1% of the Middlesex County, Massachusetts population were living in the state where they were born.

Approximately 23.1% of Middlesex County, Massachusetts residents in 2020-2024 were foreign-born. 50.5% of foreign-born were naturalized U.S. citizens and an estimated 58.1 % entered the country before the year 2010.

Foreign-born residents of Middlesex County, Massachusetts come from different parts of the world. The bar graph below displays the percentage of foreign-born from each world region of birth in 2020-2024 for Middlesex County, Massachusetts.

Region of Birth for the Foreign-Born Population in Middlesex County, Massachusetts in 2020-2024

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Percent
Latin America 30.8
Asia 42.6
Europe 16.3
Africa 7.4
Northern America 2.4
Oceania 0.5

Language

Among people at least five years old living in Middlesex County, Massachusetts in 2020-2024, 29.1 % spoke a language other than English at home. Spanish was spoken by 6.6% of people at least five years old; 10.3% reported that they did not speak English "very well."

Percentage of the Population 5 years and over who Speak a Language other than English in Middlesex County, Massachusetts in 2020-2024

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Percent
Spanish 6.6
Other Indo-European languages 12.5
Asian and Pacific Islander languages 8
Other languages 2.1

Geographic Mobility

In 2020-2024, 87.2 % of the people at least one year old living in Middlesex County, Massachusetts were living in the same house one year earlier.

Geographic Mobility of Residents of Middlesex County, Massachusetts in 2020-2024

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Percent
Same house 87.2
Different house, same county 6.3
Different county, same state 2.7
Different state 2.7
Abroad 1.2

Education

In 2020-2024, 93.2 % of people 25 years and over had at least graduated from high school and 59.5% had a bachelor's degree or higher. An estimated 6.7% did not complete high school.

The total school enrollment in Middlesex County, Massachusetts was 403,939 in 2020-2024. Nursery school enrollment was 25,879 and kindergarten through 12th grade enrollment was 238,411. College or graduate school enrollment was 139,649.

Educational Attainment of People in Middlesex County, Massachusetts in 2020-2024

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Percent
Less than high school diploma 6.7
High school diploma or equivalency 17.2
Some college, no degree 10.9
Associate's degree 5.6
Bachelor's degree 29
Graduate or professional degree 30.5

Disability

In Middlesex County, Massachusetts, among the civilian noninstitutionalized population in 2020-2024, 9.9 % reported a disability. The likelihood of having a disability varied by age - from 4.1% of people under 18 years old, to 7.2% of people 18 to 64 years old, and to 27.7% of those 65 and over.


Employment Status and Type of Employer

In Middlesex County, Massachusetts, 66.7 % of the population 16 and over were employed; 30.1% were not currently in the labor force.

An estimated 83.7% of the people employed were private wage and salary workers; 10.8% were federal, state, or local government workers; and 5.4 % were self-employed in their own (not incorporated) business.

Class of worker Number Percent
Private wage and salary workers 757,715 83.7
Federal, state, or local government workers 98,116 10.8
Self-employed workers in own not incorporated business 48,827 5.4

Industries

In 2020-2024, the civilian employed population 16 years and older in Middlesex County, Massachusetts worked in the following industries:

Percent by Industry in Middlesex County, Massachusetts in 2020-2024

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Percent
Agriculture, forestry, fishing and hunting, and mining 0.3
Construction 5.3
Manufacturing 10.3
Wholesale trade 1.4
Retail trade 8
Transportation and warehousing, and utilities 2.8
Information 2.7
Finance and insurance, and real estate and rental and leasing 6.8
Professional, scientific, and management, and administrative and waste management services 21.1
Educational services, and health care and social assistance 27.5
Arts, entertainment, and recreation, and accommodation, and food services 6.4
Other Services, except public administration 3.9
Public administration 3.3

Occupations

Occupations for the Civilian Employed Population 16 Years and over in Middlesex County, Massachusetts in 2020-2024

Civilian employed population 16 years and over Number Percent
Management, business, sciences, and arts occupations 553,211 61.1
Service occupations 114,359 12.6
Sales and office occupations 133,032 14.7
Natural resources, construction, and maintenance occupations 47,732 5.3
Production, transportation, and material moving occupations 57,451 6.3

Commuting to Work

An estimated 54.2% of Middlesex County, Massachusetts workers drove to work alone in 2020-2024, and 6.3% carpooled. Among those who commuted to work, it took them on average 29.9 minutes to get to work.

Percent of Workers 16 and over Commuting by Mode in Middlesex County, Massachusetts in 2020-2024

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Percent
Car, truck, van -- drove alone 54.2
Car, truck, van -- carpooled 6.3
Public transportation (excluding taxicab) 7.2
Walked 4.2
Other means 3.3
Worked from home 24.7

In 2020-2024, Middlesex County, Massachusetts had a total of 664,267 housing units. Of these housing units, 53.4% were single-family houses either not attached to any other structure or attached to one or more structures (commonly referred to as "townhouses" or "row houses"). 46.2% of the housing units were located in multi-unit structures, or those buildings that contained two or more apartments. 0.4% were mobile homes, while any remaining housing units were classified as "other," which included boats, recreational vehicles, vans, etc.

Types of Housing Units in Middlesex County, Massachusetts in 2020-2024

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Percent
Single-family houses 53.4
Apartments in multi-unit structures 46.2
Mobile homes 0.4
Boat, RV, van, etc 0.1

8.5% of the housing inventory was comprised of houses built since 2010, while 32.3% of the houses were first built in 1939 or earlier. The median number of rooms in all housing units in Middlesex County, Massachusetts was 5.7 rooms, and of these housing units 54.8% had three or more bedrooms.


In 2020-2024, Middlesex County, Massachusetts had 634,215 housing units that were occupied or had people living in them, while the remaining 30,052 were vacant. Of the occupied housing units, the percentage of these houses occupied by owners (also known as the homeownership rate) was 61.3% while renters occupied 38.7%. The average household size of owner-occupied houses was 2.7 and in renter-occupied houses it was 2.16.

4.7% of householders of these occupied houses had moved into their house since 2021, while 11.6% moved into their house in 1989 or earlier. Households without a vehicle available for personal use comprised 10.3% and another 15.2% had three or more vehicles available for use.

The following chart provides the primary fuel used to heat houses in Middlesex County, Massachusetts:

House Heating Fuel Used in Middlesex County, Massachusetts in 2020-2024

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Percent
Gas 62.6
Electricity 17.7
Fuel oil, kerosene, etc 17.9
All other fuels 1.2
No fuel used 0.6

In 2020-2024, the median property value for owner-occupied houses in Middlesex County, Massachusetts was $727,800.

Of the owner-occupied households, 66 % had a mortgage. 34% owned their houses "free and clear," that is without a primary mortgage or loan on the house. The median monthly housing costs for owners with a mortgage was $3,224 and for owners without a mortgage it was $1,211.

For renter-occupied houses, the median gross rent for Middlesex County, Massachusetts was $2,201. Gross rent includes the monthly contract rent and any monthly payments made for electricity, gas, water and sewer, and any other fuels to heat the house.