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The 2026 Census Test: Overview and Recent

Developments



April   1, 2026

The U.S. Census Bureau begins planning for an upcoming decennial census of population and housing
more than a decade prior to the census year. Part ofthis planning includes field tests designed to assess
various operational features of the upcoming decennial census. For example, during the 2020 decennial
census cycle, the Census Bureau conducted several small-scale tests beginning in 2013, as well as the
major 2019 census test, which among other things addressed the effect of a proposed citizenship question
on self-response rates. For the 2030 decennial census cycle, the Census Bureau has ongoing small-scale
testing as well as a planned 2026 census test and 2028 dress rehearsal.
The Census Bureau began releasing initial plans for the 2026 census test in the spring of 2024 under the
Biden Administration. The initial test sites as well as testing objectives were announced in July 2024. The
Trump Administration released revised plans for the 2026 census test in February 2026, and released
additional details in March 2026.


2026 Census Test Plan

On February 3, 2026, the Census Bureau released a Federal Register (FR) notice announcing plans for the
2026 operational test. The test will be conducted using the American Community Survey (ACS) Methods
Panel, which will use the ACS questionnaire to help the Census Bureau prepare for the 2030 Census.
All questions from the ACS will be featured in the self-response portion of the test, according to
supporting material. According to the Census Bureau, the questions are expected to take around 40
minutes to complete and include name, race, sex, citizenship, and education.
The test will evaluate and assess the viability of using United States Postal Service (USPS) workers for
in-field enumeration operations to increase efficiency in various capacities typically performed by
temporary Census Bureau field workers. Other in-field enumeration operations featured in the test
include technical enhancements to mobile devices used by enumerators with the goal of streamlining data
collection, reducing time in the field, and improving data accuracy. The Census Bureau previously
considered a pilot for the 2018 end-to-end census test to use USPS letter carriers as Census Bureau
enumerators, but ultimately did not undertake the pilot due to concerns about conflicting administrative
processes within the two agencies.

                                                                 Congressional Research Service
                                                                   https://crsreports.congress.gov
                                                                                       IN12676

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