Our goal for every census is to count everyone once, only once, and in the right place.
Ensuring the quality of the census results is built into every step of conducting the census. Once we release the results, we continue to do an even deeper dive to evaluate the quality of the census.
When we release numbers, we make sure they meet our quality standards.
Ensuring we conduct a complete and accurate count is part of every step of the census—from designing the census to collecting and processing the data.
We designed the census based on research and testing.
We conducted operations and outreach to get responses from everyone.
We have numerous quality checks built into data collection and data processing.
More information about the extensive planning and operations that go into conducting a quality census are available in the 2020 Census Operational Plan.
After the data are released, we continue to do an even deeper dive to evaluate the quality of the census. We’re also committed to sharing what we know, when we know it, so that data users can feel confident in the results too.
We use a variety of techniques to evaluate the quality of a census. These fall into two major categories:
We look at how well we conducted the census.
We compare the census results to other ways of measuring the population.
One way we evaluate the quality of a census is looking at operational quality metrics. For the first time, we plan to release a number of data quality indicators along with the first results from the 2020 Census.
These metrics will provide information on the status of addresses in the census and how we resolved addresses across each of the data collection modes.
Additional 2020 Census Operational Quality Metrics
Today the U.S. Census Bureau released additional operational quality metrics on the 2020 Census.
Census Bureau Releases Quality Indicators on 2020 Census
This is the first time that the Census Bureau has released detailed analyses and operational quality metrics on the same day as the first population counts.
On April 21, 2021, the Census Bureau held a technical webinar to preview the type and meaning behind the data quality metrics.
We are engaging respected members of the scientific and statistical community to conduct independent assessments of the 2020 Census.
Their reports will advise the Census Bureau on improving future censuses and will help the public to understand the quality of the 2020 Census data.
The experts are from three groups:
A coverage measurement program is essential for measuring the effectiveness of any census, including the 2020 Census, in terms of data quality. It is necessary to produce coverage measures to determine if the goals for 2020 were met and to determine how future censuses can be improved. Below are links to webpages for these two methods.
Census Bureau Hosts News Conference to Release 2020 Census Data Quality Results
U.S. Census Bureau released the first set of results from the 2020 PES along with additional results from the 2020 DA estimates.
Comparisons to Benchmarks as a Measure of Quality
Data quality is multidimensional and so approaching it from multiple angles produces a more insightful and holistic picture of a dataset.
The 2020 Census Evaluations and Experiments (EAE) was designed to document and evaluate the 2020 Census programs and operations, as well as test new methods that were suggested from previous evaluation work.
La Oficina del Censo de los EE. UU. publica las tasas de subcoteos y sobreconteos del 2020 por estado y en el Distrito de Columbia
Oficina del Censo publica tasas estimadas de subconteos y sobreconteos del 2020 por estado y en D. C., según la Encuesta de la Fase Posterior a la Enumeración.
U.S. Census Bureau Releases 2020 Undercount and Overcount Rates by State and the District of Columbia
The U.S. Census Bureau released the 2020 Census estimated undercount and overcount rates by state and the District of Columbia from the PES.
Our Commitment to Quality: A Revised ACS Estimation Methodology
We revised our estimation methodology to improve the 2020 portion of the 2016-2020 ACS 5-year data.
Upcoming 2020 Census Coverage Estimates
The U.S. Census Bureau released coverage estimates for the 2020 Census.
Disclosure Avoidance Modernization
All 2020 Census data products (with the exception of the apportionment data) will be protected with a new, modernized disclosure avoidance system.
2020 Census Operational Plan and Detailed Operational Plans
The U.S. Census Bureau’s 2020 Census Operational Plan documents the design for conducting the 2020 Census.
A Look Back at the 2020 Census
It all began on a January afternoon, in the remote Alaskan village of Toksook Bay…
View information about our quality standards and correction procedures for information that does not comply with the guidelines.
Information about the statistical safeguards in place to prevent identification.
The Census Bureau has several policies to ensure the data we collect is protected and your privacy is respected.