Population 2010

1,503,085

Population 2020

1,632,002

Registered Voters

1,038,360

Republicans

93,276

Democrat

360,454

Minor Party

11,730

No Party

572,900

Municipalities

City Names Population 
Cambridge118,403
Everett49,075
Framingham72,362
Lowell115,554
Malden66,263
Marlborough41,793
Medford59,659
Melrose29,817
Newton88,923
Somerville81,045
Waltham65,218 
Watertown35,329
Woburn40,876
Acton24,021
Ashby3,193
Ashland18,832
Ayer8,479
Bedford14,383
Billerica42,119
Boxborough5,506
Burlington26,377
Carlisle5,237
Chelmsford36,392
Concord18,491
Dracut32,617
Dunstable3,358
Groton11,315
Holliston14,996
Hudson20,092
Lexington34,454
Lincoln7,014
Littleton10,141
Maynard10,746
Natick37,006
North Reading15,554
Pepperell11,604
Reading25,518
Sherborn4,401

Superintendent of Schools

Treasurer / Tax Collector

County Commission

Director of the BoardRonald G. Rios
Deputy Director of the BoardShanti Narra
County Commissioner Claribel A. Azcona-Barber
County Commissioner Charles Kenny
County Commissioner Leslie Koppel
County CommissionerChanelle Scott McCullum
County Commissioner Charles E. Tomaro

School Board

Superintendent Dr. Tracy Seitz
Assistant SuperintendentDr. Byron Bishop
Chairperson Claudia Soucek
Assistant Chairperson Elliott Reed
Board Member Garland Harrow
Board Member Jenny McMurtrie
Board Member Dr. Dana Burnett

Brief Political History

Middlesex County is located in the Commonwealth of Massachusetts, in the United States. As of the 2020 census, the population was 1,632,002, making it the most populous county in both Massachusetts and New England and the 22nd most populous county in the United States.

Prior to 1960, Middlesex County was a Republican Party stronghold, backing only two Democratic Party presidential candidates from 1876 to 1956. The 1960 election started a reverse trend, with the county becoming a Democratic stronghold. This has been even more apparent in recent years, with George H. W. Bush in 1988 being the last Republican presidential candidate to manage forty percent of the county's votes and Mitt Romney in 2012 being the last Republican presidential candidate to manage even thirty percent of the vote. In 2020, Joe Biden won 71% of the vote, the highest percent for any presidential candidate since 1964.

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