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Population and Demography of Massachusetts

Massachusetts is a state in the northeastern region of the United States. It borders the Atlantic Ocean and the Gulf of Maine to the east, Connecticut to the southwest and Rhode Island to the southeast, New Hampshire to the northeast, Vermont to the northwest, and New York to the west. 

Massachusetts is the fifteen most populous state in the United States.  The total Land area is 7,840 square miles (20,306 square kilometers) and there is an average of 897 people for every square mile. This makes Massachusetts the 3rd most densely populated state in the US. As per the  United States Census Bureau, the population of Massachusetts in 2020 is 7,029,917 (7 million)

Population of Massachusetts in 2024 – 7,001,399 or 7 million 
Massachusetts Population (2010-2020)

Massachusetts has a population growth rate of 7.4% during 2010-2020. It has population increase of 482,288 since 2010. The median age is 39.4 years of age over the entire population of Massachusetts. The gender ratio is approximately 51.5% female and 48.5% male.

Massachusetts Census 2020
Total Population7,029,917 (7 million)
Median age39.4 years
Population Rank15th
Total Land Area7,840 sq. mi (20,306 km2)
Area Rank44th
Population Density897/sq. mi (346/km2)
Capital CityBoston

Source: US Census 2020 and Census Estimates

Massachusetts Historical Population

In the year 1910 Massachusetts’s population was 3.3 million and in 2020 it reached 7 million, an increase of almost 4.7 million. 

Let’s look at decade population & percentage change

YearPopulation% Change

Source: US Census  2020

Religion and affilations

Christianity is the majority religion in Massachusetts followed by 58% of the population.  The largest Christian denomination in Massachusetts is Roman Catholics (34%); Protestants (21%); Mormonism (1%);  Eastern Orthodoxy (1%);  and Jehovah’s Witnesses. Next comes the Unaffiliated population, 32% of the population doesn’t follow or adhere to any faith or religion.

Other non-Christian-based religions and faiths are followed by 9% of the population and include Hindus. Jewish, Buddhists, Sikhs, and Muslims are other faiths.

For more details read Religion in Massachusetts

Source: Pew research center

Race and Ethnicity

In 2020, the White alone (non-Hispanic) population was the largest racial or ethnic group in Massachusetts, comprising 67.55% of the total population. It was followed by the Hispanic or Latino population whose share was 112.63%. Asian was the third largest group at 7.18%. The African American population is at 6.50% &  Two or more races are at 3.57%.


As per Census Studies & estimate Irish, Italian, English, French, and Germans have made the five largest ancestry groups in Massachusetts.

For more details read Race and Ancestry in Massachusetts

Top Cities and Counties in Massachusetts

As of 2022, Massachusetts is divided into 14 counties. The most populous county in Massachusetts is  Middlesex County and the least populated is Nantucket County. The Largest county by Land Area in Massachusetts is Worcester County and the smallest by area is Nantucket county.

Boston is the largest city and approximately 2/3 of the total Massachusetts population lives in Greater Boston. It’s followed by  Worcester City (184,570) and Springfield (152,64).

read more about Counties and Cities in Massachusetts

Massachusetts Population 2024 | Massachusetts Demographics