Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Topics
Data & Maps
Surveys & Programs
Resource Library
2020 Census Memorandum Series
2020 Census Memorandum Series
The 2020 Census Memorandum Series documents significant decisions, actions, and accomplishments of the 2020 Census Program for the purpose of informing stakeholders, coordinating interdivisional efforts, and documenting important historical changes.
A memorandum generally will be added to this series for any decision or documentation that meets the following criteria:
1. A major program level decision that will affect the overall design or have significant effect on the 2020 Census operations or systems.
2. A major policy decision or change that will affect the overall design or significantly impact the 2020 Census operations or systems.
3. A report that documents the research and testing for the 2020 Census operations or systems.
Publication
Memorandum 2021.22: Documentation of Changes to the CRO
This memorandum documents updates that have been made to the Count Review Operation (CRO) since the release of the 2020 Census Detailed Operational Plan (DOP).
Publication
Memorandum 2021.21: Changes to the Count Question Resolution Operation
This memorandum documents changes to the Count Question Resolution (CQR) operation since the publication of the CQR Detailed Operational Plan in 2020.
Publication
Memorandum 2021.20: Updates to the Nonresponse Followup Operation
This memorandum documents updates made to the Nonresponse Followup (NRFU) operation since the release of 2020 Census DOP on July 15, 2019.
Publication
Memorandum 2021.19: Updates to the 2020 Redistricting Data Program DOP
This memorandum documents specific updates made to the plan for the Redistricting Data Program Operation (RDP).
Publication
Memorandum 2021.18: 2020 Census Count Imputation: High-Level Overview
This memorandum provides a high-level overview of the count imputation process for addresses in the housing unit universe of the 2020 Census.
Publication
Memorandum 2021.17: Updates to the EAE Operation
This memorandum documents changes to the Evaluations and Experiments operation (EAE) since the release of the EAE DOP on September 23, 2019.
Publication
Memorandum 2021.16: GQ Operation Detailed Operational Plan v2.0
This memorandum documents the version 2.0 Detailed Operational Plan for the Group Quarters (GQ) operation.
Publication
Memorandum 2021.15: Administrative Data Used in the 2020 Census
This memorandum describes how administrative data was used in the 2020 Census.
Publication
Memorandum 2021.14: Updates to the GEOP — Geographic Partnership
This memorandum documents specific updates that have been made to the plan for the Geographic Programs operation (GEOP)—Geographic Partnership component.
Publication
Memorandum 2021.13: Updates to the 2020 Archiving Operation
This memorandum documents specific updates that have been made to the plan for the Archiving Operation (ARC).
Publication
Memorandum 2021.12: Updates to the GEOP – Geographic Data Processing
This memorandum documents specific updates that have been made to the plan for the Geographic Programs Operation (GEOP) - Geographic Data Processing component.
Publication
Memorandum 2021.11: Changes to the IPC Operation
This memorandum documents changes to the Integrated Partnership and Communications (IPC) operation since the publication of the IPC Detailed Operational Plan.
Publication
Memorandum 2021.10: Administrative Record Modeling in the 2020 Census
This memorandum documents the release of the Administrative Record Modeling in the 2020 Census report.
Publication
Memorandum 2021.09: Updates to the Island Areas Censuses Operation
This memorandum documents specific updates that have been made to the IAC operation since the release of the IAC Detailed Operational Plan.
Publication
Memorandum 2021.08: Updates to the Enumeration at Transitory Locations Operation
This memorandum documents updates that have been made to the ETL operation since the release of the Enumeration at Transitory Locations DOP.
Publication
Memorandum 2021.07: Documentation of Updates for the FLDI and DLM Op.
This memorandum documents updates that have been made to the FLDI operation and DLM operation since the release of the Detailed Operational Plan (DOP).
Publication
Memorandum 2021.06: Updates to the 2020 Update Enumerate DOP
This memorandum documents specific updates that have been made to the plan for the UE operations since the release of the UE Detailed Operational Plan.
Publication
Memorandum 2021.05: Documentation of Updates to the Update Leave Operation
This memorandum documents specific updates that have been made to the plan for the UL operation since the release of the Update Leave DOP on June 25, 2018.
Publication
Memorandum 2021.04: Documentation of Updates to the Internet Self-Response Operation
This memorandum documents updates that have been made to the ISR operation since the release of the ISR Detailed Operational Plan (DOP) on August 22, 2018.
Publication
Memorandum 2021.03: Documentation of Updates to Non-ID Processing Op.
This memorandum documents changes to the Non-ID Processing (NID) operation since the release of v2.0, NID Detailed Operational Plan (DOP) on June 25, 2018.
Publication
Memorandum 2021.02: Updates to the Census Questionnaire Assistance Operation Scope
This memorandum documents the final updates to the Census Questionnaire Assistance (CQA) operation program scope since the release of Version 2.0.
Memorandum 2021.01: Assessment of 2020 Census Data Quality Processes
This memorandum releases the Assessment of 2020 Census Data Quality Processes report authored by the JASON group.
Page Last Revised - October 28, 2021
✕
Is this page helpful?
Yes
No
Yes
No✕
NO THANKS
255 characters maximum
255 characters maximum reached
255 characters maximum reached
✕
Thank you for your feedback.
Comments or suggestions?
Comments or suggestions?
