Census 2020 Data for Massachusetts
The U.S. Census Bureau released the first detailed dataset from the Census 2020 count on August 12, 2021. This “Decennial Census P.L. 94-171 Redistricting” dataset includes population counts by race and ethnicity in two age groups including under-18 and 18-plus as well as housing unit counts by occupancy status. The full PL-94 dataset encompasses Census count information for geographic levels including state, county, tract, block-group, block, and congressional-district. On this webpage UMDI has developed interactive data dashboards to display the Census 2020 population totals, population change, population by race and ethnicity, and housing unit information at the city and town level. Scroll below the dashboards to find a link to individualized municipal summaries and downloadable tables. For additional information on the Census Bureau’s Census 2020 data releases, visit the Bureau’s Census 2020 webpage.
Decennial Census P.L. 94-171 Redistricting Data
The 3-page summary report for each city and town includes information on population totals, population change, population by race and ethnicity, and housing unit information in historical and state context.Select your city or town here
Data Dash Releases
Donahue Data Dash: The Effects of Differential Privacy on Massachusetts PL-94 Census Data
This interactive dashboard shows the estimated effects of Differential Privacy on Massachusetts PL94 Census Data by geographic level, population size, race, and age group. In its Census 2020 data release, the U.S. Census Bureau has applied a technique called Differential Privacy in a new Disclosure Avoidance System that adds error to published data in order to protect individual respondent privacy. This analysis estimates the extent of this error by comparing the Census Bureau’s 2010 Demonstration Data (2021.06.08 Production Settings) against the Census 2010 Summary File 1 dataset for Massachusetts.
View the release.
For additional detail on the effects of differential privacy on Massachusetts Census data, please read the following: Summary Report: Differential Privacy in Massachusetts PL-94 Data
Massachusetts Census 2020: County Level Population
On August 12, 2021, the U.S. Census Bureau released its first wave of population data from the 2020 Census count – the PL-94.171 Redistricting Data. In terms of sheer population numbers, the largest gains in population since the 2010 Census were seen in Middlesex at 128,917 followed by Suffolk at 75,913 and Essex at 66,670. Only two Massachusetts counties, Franklin and Berkshire, lost population between Census 2010 and 2020, with a loss of 343 in Franklin and 2,193 in Berkshire.
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Census 2020 Count for Massachusetts
On April 26, 2021, the U.S. Census Bureau released the Census 2020 apportionment data, including the resident population, overseas population, and total population enumerated for each state in the 2020 decennial Census. State total population counts, including overseas population, are used to apportion congressional seats among the 50 U.S. States while resident population counts (excluding overseas) are used to determine the population in each sub-state legislative district. This state-level apportionment data represent the first official population numbers coming out of the 2020 Census count for Massachusetts.
View the release.
For more information, please contact Susan Strate or call (413) 577-0753.