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Memorandum 2018.10: Release of the 2020 Census Nonresponse Followup Operation (NRFU) Detailed Operational Plan

Memorandum 2018.10

This memorandum documents the release of the 2020 Census Detailed Operational Plan for the Nonresponse Followup Operation (NRFU). This document baselines the 2020 Census NRFU process and provides specific details for the NRFU operation. It will be updated over time to reflect changes in the strategies that result from census planning, research, and testing activities.

The primary purpose of NRFU is to determine the housing unit status of a nonresponding address and to enumerate the households at nonresponding housing units. The operation also includes the field verification of select addresses that responded without a Census ID and the enumeration of addresses that are identified by other census operations. The NRFU operation is an integral part of the 2020 Census program that ensures data accuracy and coverage.

The 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 2020 Census operations or systems.
  2. A major policy decision or change that will affect the overall design or significantly impact 2020 Census operations or systems.
  3. A report that documents the research and testing for 2020 Census operations or systems.


Visit 2020census.gov to access the Memorandum Series, the 2020 Census Operational Plan, and other information about preparations for the 2020 Census.

Page Last Revised - March 29, 2022
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