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The 192nd General Court of the Commonwealth of Massachusetts

Legislative District Sizes

Legislative District Sizes

The ideal district population is the total state population divided by the total number of districts. Below are tables that list the 2010 district sizes in Massachusetts used for the House, Senate, and Congress, and new ideal sizes based on the April 26, 2021 US Census Bureau release of State Resident Population data. State totals that include counts of overseas federal employees are only used to calculate Congressional apportionment. They are not included in any other census data products and are not used for redistricting.

2010 Census

MA POP6,547,629
Population per District
Rep.
Sen.
Congress
Districts 160 40 9
Ideal Population 40,923 163,691 727,514
Minimum Population 38,877 155,506 727,513
Maximum Population 42,969 171,875 727,515
Allowed Deviation 4,092 16,369 +/- 1

2020 Census

MA POP7,029,917
Population per District
Rep. Sen. Congress
Districts 160 40 9
Ideal Population 43,937 175,748 781,102
Minimum Population 41,740 166,961 781,101
Maximum Population 46,134 184,535 781,103
Allowed Deviation 4,394 17,575 +/- 1

To learn more please visit U.S. Census Bureau