ACS 5-Year Estimates
Started in 2010, the Census Bureau releases 5-year averages estimates for all geographic areas, regardless of population size. These estimates are based on data collected over a 5-year period of time and therefore they describe the average characteristics for that 5-year time period. The geographic areas in 5-year averages estimates are available for every state, county, city, town, place, American Indian Area, Alaska Native Area, and Hawaiian Home Land, as well as for census tracts and block groups. The five-year estimates from the ACS replace estimates from the decennial census long form started in 2010.
5-Year ACS estimates can be also accessed via the Census Bureau’s American FactFinder web application. However, detailed ACS tables for block groups are not published in American FactFinder, they are only included in the Summary File product. Our center provides 5-Year ACS Summary File (also known as Detailed Tables) including block groups level data in SAS, SPSS and STATA formats. There are two types of data post on our website: the estimates data and the margins-of-error data in separate files. A file like “e20095wa_BlockGroup_King.sas7bdat” indicates all the tables of estimates data at block group level for King County. Please read the “READ ME”” document for instruction, e.g., how to extract variables from a complete data file.
See the following documents for more information:
The ACS Design and Methodology
2009 ACS 5-Year (2005–2009) Summary File for WA
Note: The 2009 ACS data are in the 2000 boundaries
2010 ACS 5-Year (2006–2010) Summary File for WA
Note: The 2010 ACS data are in the new 2010 boundaries
2011 ACS 5-Year (2007–2011) Summary File for WA
Started in 2010, ACS data is in the new 2010 boundaries
2011 ACS 5-Year (2007–2011) Summary File for US
Beginning in 2011, the Zip Code Tabulation Areas have been added as one of the geographic levels, and they are only in the US national level file.
2012 ACS 5-Year (2008–2012) Summary File for WA
2012 ACS 5-Year (2008–2012) Summary File for US
2013 ACS 5-Year (2009–2013) Summary File for WA
2013 ACS 5-Year (2009–2013) Summary File for US
2013 ACS 5-Year (2009–2013) PUMS for WA
2013 ACS 5-Year (2009–2013) PUMS for US
2014 ACS 5-Year (2010–2014) Summary File for WA
2014 ACS 5-Year (2010–2014) Summary File for US
2014 ACS 5-Year (2010–2014) PUMS for WA
2014 ACS 5-Year (2010–2014) PUMS for US
2010-2014 ACS 5-Year Estimates Variance Replicate Tables for US and WA
Variance replicate estimate tables include estimates, margins of error, and 80 variance replicates for selected American Community Survey 5-year detailed tables. The tables are intended for advanced users who are adding ACS data within a table or between geographies. Users can calculate margins of error for aggregated data by using the variance replicates. Unlike available approximation formulas, this method results in an exact margin of error by using the covariance term.
2015 ACS 5-Year (2011–2015) Summary File for WA
2015 ACS 5-Year (2011–2015) Summary File for US
2015 ACS 5-Year (2011–2015) PUMS for WA
2015 ACS 5-Year (2011–2015) PUMS for US
2016 ACS 5-Year (2012–2016) Summary File for WA
2016 ACS 5-Year (2012–2016) Summary File for US
2016 ACS 5-Year (2012–2016) PUMS for WA
2016 ACS 5-Year (2012–2016) PUMS for US
2017 ACS 5-Year (2013–2017) Summary File for WA
2017 ACS 5-Year (2013–2017) Summary File for US
2017 ACS 5-Year (2013–2017) PUMS for WA
2017 ACS 5-Year (2013–2017) PUMS for US
2018 ACS 5-Year (2014–2018) Summary File for WA
2018 ACS 5-Year (2014–2018) Summary File for US
2018 ACS 5-Year (2014–2018) PUMS for WA
2018 ACS 5-Year (2014–2018) PUMS for US
2019 ACS 5-Year (2015–2019) Summary File for WA
2019 ACS 5-Year (2015–2019) Summary File for US
2019 ACS 5-Year (2015–2019) PUMS for WA
2019 ACS 5-Year (2015–2019) PUMS for US
2020 ACS 5-Year (2016–2020) Summary File for WA
2020 ACS 5-Year (2016–2020) Summary File for US
The ACS data collection operations were significantly impacted during the COVID-19 pandemic. This resulted in substantial nonresponse bias in the 2020 ACS data, which means the characteristics of people who responded to the survey were significantly different from the people who did not respond. The Census Bureau revised its methodology to reduce the impact of the nonresponse bias on the estimates and to ensure the methodology performed appropriately at various levels of geography. Detailed documentations can be found at Our Commitment to Quality: A Revised American Community Survey Estimation Methodology in the Complexity of a Pandemic and Modification to the 5-Year Estimation Methodology Containing Data Collected in 2020.
2020 ACS 5-Year (2016–2020) PUMS for WA
2020 ACS 5-Year (2016–2020) PUMS for US
2021 ACS 5-Year (2017–2021) Summary File for WA
2021 ACS 5-Year (2017–2021) Summary File for US
2021 ACS 5-Year (2017–2021) PUMS for WA
2021 ACS 5-Year (2017–2021) PUMS for US
2022 ACS 5-Year (2018–2022) Summary File for WA
2022 ACS 5-Year (2018–2022) Summary File for US