Population Estimate, Total (5-year estimate) in Middlesex County, CT

Observations

2021: 164,568

Updated: Dec 8, 2022 11:47 AM CST

2021:	164,568
2020:	162,742
2019:	163,053
2018:	163,368
2017:	164,110

Units:

Persons,

Not Seasonally Adjusted

Frequency:

Annual

Notes

Title	Release Dates

Population Estimate, Total (5-year estimate) in Middlesex County, CT	2018-12-06	2022-12-08

Source

U.S. Census Bureau	2018-12-06	2022-12-08

Release

County Population Estimates By Race And Ethnicity	2018-12-06	2022-12-08

Units

Persons	2018-12-06	2022-12-08

Frequency

Annual	2018-12-06	2022-12-08

Seasonal Adjustment

Not Seasonally Adjusted	2018-12-06	2022-12-08

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 (https://www.census.gov/content/dam/Census/library/publications/2018/acs/acs_general_handbook_2018.pdf) for a more thorough clarification.	2018-12-06	2022-12-08