Federal Reserve Economic Data

Table Data - Population Estimate, Total, Not Hispanic or Latino, Black or African American Alone (5-year estimate) in Middlesex County, MA

Title Population Estimate, Total, Not Hispanic or Latino, Black or African American Alone (5-year estimate) in Middlesex County, MA
Series ID B03002004E025017
Source U.S. Census Bureau
Release County Population Estimates By Race And Ethnicity (Not a Press Release)
Seasonal Adjustment Not Seasonally Adjusted
Frequency Annual
Units Persons
Date Range 2009-01-01 to 2023-01-01
Last Updated 2024-12-12 1:52 PM CST
Notes Data obtained from ACS Demographic and Housing Estimates, table DP05.

Multiyear estimates from the American Community Survey (ACS) are "period" estimates derived from a data sample collected over a period of time, as opposed to "point-in-time" estimates such as those from past decennial censuses. ACS 5-year estimate includes data collected over a 60-month period. The date of the data is the end of the 5-year period. For example, a value dated 2014 represents data from 2010 to 2014. However, they do not describe any specific day, month, or year within that time period.

Multiyear estimates require some considerations that single-year estimates do not. For example, multiyear estimates released in consecutive years consist mostly of overlapping years and shared data. The 2010-2014 ACS 5-year estimates share sample data from 2011 through 2014 with the 2011-2015 ACS 5-year estimates. Because of this overlap, users should use extreme caution in making comparisons with consecutive years of multiyear estimates.

Please see "Section 3: Understanding and Using ACS Single-Year and Multiyear Estimates" on publication page 13 (file page 19) of the 2018 ACS General Handbook for a more thorough clarification.
DATE VALUE
2009-01-01 55935
2010-01-01 61545
2011-01-01 62698
2012-01-01 65529
2013-01-01 66499
2014-01-01 69466
2015-01-01 71251
2016-01-01 73972
2017-01-01 76708
2018-01-01 78649
2019-01-01 79953
2020-01-01 79412
2021-01-01 79354
2022-01-01 78817
2023-01-01 78074

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