U.S. flag

An official website of the United States government

Skip Header


Timeline for Releasing Redistricting Data

Written by:

If this were a typical decade, we would be on the verge of delivering the first round of redistricting data from the 2020 Census. Our original plan was to deliver the data in state groupings starting Feb. 18, 2021 and finishing by March 31, 2021.  

However, COVID-19 delayed census operations significantly. Consistent with previous census, we are focusing first on our constitutional obligation to deliver the state population counts for apportionment to the President. As we announced last week, the deadline for this work is April 30, 2021. This focus on meeting our constitutional obligation has delayed some of the processing activities necessary to generate the redistricting counts.   We expect to deliver the redistricting data to the states and the public by Sept. 30, 2021. 

Now that we have finalized the schedule for completing the apportionment counts (by April 30), we have been able to finalize a schedule for the redistricting data.  

Delivering by September 30

This data delivery will be a single national delivery, rather than our originally-planned staggered delivery of redistricting data.  

This national delivery allows us to:

  • Ensure we are delivering the high-quality fit-for-use data products the states need for redistricting. 
  • Complete delivery to all states several weeks earlier than the last states would have otherwise received it.
  •  Better manage the production process.

We are acutely aware of the difficulties that this delayed delivery of the redistricting data will cause some states. Some states have statutory or even state constitutional deadlines and processes that they will have to address due to this delay.

The decision to have a single national delivery ensures that the Census Bureau can provide accurate, high quality, and fit-for-use data in the least total amount of time to all states.

Following our thorough and complete process provides the best assurance to the states that these data meet the quality standards they expect and require to underpin their important decisions. 

Support for the States

In the meantime, I am happy to say, we have delivered the 2020 Census Redistricting Data Geographic Support Products to all 50 states, the District of Columbia, and Puerto Rico. As of this morning, Feb. 12, 2021, we published the final sets of geographic data to census.gov for the public as well.

State and local governments use these products in their redistricting efforts. The products contain newly created 2020 Census blocks and updated block groups, census tracts, voting districts, and current boundaries for legal governments and school districts referenced to Jan. 1, 2020.

The law (Public Law 94-171) that governs our work on producing redistricting data directs us to allow the states the opportunity to identify the small area geography and tabulations they need to do their redistricting work.

Over the past few years, we worked through non-partisan liaisons in each state to identify these geographic areas by:

  •  Providing customized open source software for exchanging geographic data.
  • Allowing states to suggest updates to multiple types of geography.
  • Creating prototype census blocks to help them visualize how the 2020 Census blocks would appear if the geography for their state was left unchanged.
  • Providing an additional review period of several months in which they could finalize their geographic updates.

Using the information that each state provided, we have now delivered geographic information in formats that will help them plug in the actual 2020 Census data and do their work of redrawing district boundaries. And as we announced today, we will provide those quality data to the states by Sept. 30, 2021.

Related blogs


Random Samplings Blog
Upcoming 2020 Census Coverage Estimates 
The U.S. Census Bureau released coverage estimates for the 2020 Census.


Random Samplings Blog
The Post-Enumeration Survey: Measuring Coverage Error
Although we undertake extensive efforts to accurately count everyone in the decennial census, sometimes people are missed or duplicated.


Random Samplings Blog
Using Demographic Benchmarks to Help Evaluate 2020 Census Results
One of the primary methods of evaluating the quality of a census is comparing the results to other population benchmarks.


Random Samplings Blog
Programa de Evaluaciones y Experimentos del Censo del 2020
Este blog describe la serie de evaluaciones formales que miden diferentes aspectos de las operaciones del censo y los desafíos.


Random Samplings Blog
2020 Census Program for Evaluations, Experiments, and Assessments
This blog describes the series of formal evaluations and assessments that measure different aspects of census operations and specific challenges.


Random Samplings Blog
Improvements to the 2020 Census Race and Hispanic Origin Question Designs, Data Processing, and Coding Procedures
This blog discusses how we improved the census questions on race and Hispanic origin, also known as ethnicity, between 2010 and 2020.


Random Samplings Blog
How We Complete the Census When Demographic and Housing Characteristics Are Missing
Although we strive to obtain all demographic and housing data from every individual in the census, missing data are part of every census process.


Random Samplings Blog
Censo del 2020: Métricas de calidad, Publicación 2
Este blog proporciona datos destacados del segundo grupo de métricas operacionales de calidad del Censo del 2020.


Random Samplings Blog
2020 Census Operational Quality Metrics: Release 2
Today we released the second round of 2020 Census operational quality metrics.


Random Samplings Blog
Examining Operational Quality Metrics
The Census Bureau is taking a multifaceted approach to studying the quality of the 2020 Census, so as to produce a more complete and informative picture.


Random Samplings Blog
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.


Random Samplings Blog
Revisión de los datos del Censo del 2020
En este blog hablamos sobre cómo estamos realizando una de las revisiones de datos más completas en la historia reciente del censo, para el Censo del 2020.


Random Samplings Blog
2020 Census Data Review
For the 2020 Census, we are conducting one of the most comprehensive reviews in recent census history.


Random Samplings Blog
Cómo completamos el censo cuando los hogares o alojamientos de grupo no responden
Mientras continuamos procesando las respuestas al Censo del 2020, las personas han preguntado qué sucede cuando no obtenemos una respuesta de una dirección.


Random Samplings Blog
How We Complete the Census When Households or Group Quarters Don’t Respond
As we continue to process 2020 Census responses, people have asked what happens when we don’t get a response from an address.


Random Samplings Blog
Administrative Records and the 2020 Census
Each decade we are asked, “Why don’t you just use the information the government already has about me for the census? Why ask me again?”


Random Samplings Blog
Los registros administrativos y el Censo del 2020
Este blog describe cómo el Censo del 2020 usó los registros administrativos para contar a las personas que no respondieron.


Random Samplings Blog
Introduction to Quality Indicators: Operational Metrics
In the coming weeks, the U.S. Census Bureau will release the first set of results from the 2020 Census. Our goal for every census is to count everyone once, only once, and in the right place.


Random Samplings Blog
2020 Census Group Quarters
As we continue processing 2020 Census results, we’d like to provide more information on how we count people living in group quarters (GQs).


Random Samplings Blog
Encontrar ‘anomalías’ demuestra que los controles de calidad del Censo del 2020 funcionan
El 9 de marzo de 2021, la Oficina del Censo de los EE. UU. publicó un blog (en inglés) sobre las “anomalías” que encontramos al procesar los datos del Censo del 2020.


Random Samplings Blog
Finding ‘Anomalies’ Illustrates 2020 Census Quality Checks Are Working
We’re in the midst of data processing for the 2020 Census. As Acting Census Bureau Director Ron Jarmin acknowledged in a recent blog, we’ve discovered some “anomalies” along the way that we’re looking into and resolving.


Random Samplings Blog
Adaptación de las operaciones de campo para enfrentar desafíos sin precedentes
La oficina del Censo de los EE. UU. compartió información en una publicación de blog el 1 de marzo de 2021, acerca de cómo la realización de un censo es una tarea enorme, incluso en circunstancias ideales.


Random Samplings Blog
Adapting Field Operations to Meet Unprecedented Challenges
As we process census responses and analyze the quality of the 2020 Census, it’s helpful to look back at some of the unprecedented challenges we faced during this census.


Random Samplings Blog
Ensuring a Robust and Accurate Data Quality Analysis in the 2020 Census
Asking outside experts to review our work is standard operating procedure at the U.S. Census Bureau. It underscores our commitment to quality and transparency.


Random Samplings Blog
Timeline for Releasing Redistricting Data
We expect to deliver the redistricting data to the states and the public by Sept. 30, 2021.


Random Samplings Blog
Census Data Processing 101
Michael Thieme describes how census data processing works to ensure the census is accurate.


Directors Blog
2020 Census Processing Updates
I’m writing to provide an update on data processing for the 2020 Census.


Random Samplings Blog
Update on 2020 Census Data Processing and Quality
The Census Bureau has begun processing the data collected for the 2020 Census. Data collection for the decennial census is always a herculean task and 2020 was no exception.

Top

Back to Header