Population Estimate, Total (5-year estimate) in Washtenaw County, MI

Observations

2023: 368,394

Updated: Dec 12, 2024 1:56 PM CST

2023:	368,394
2022:	370,231
2021:	372,428
2020:	368,385
2019:	367,000

Units:

Persons,

Not Seasonally Adjusted

Frequency:

Annual

Notes

Title	Release Dates

Population Estimate, Total (5-year estimate) in Washtenaw County, MI	2018-12-06	2024-12-12

Source

U.S. Census Bureau	2018-12-06	2024-12-12

Release

County Population Estimates By Race And Ethnicity	2018-12-06	2024-12-12

Units

Persons	2018-12-06	2024-12-12

Frequency

Annual	2018-12-06	2024-12-12

Seasonal Adjustment

Not Seasonally Adjusted	2018-12-06	2024-12-12

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	2024-12-12