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Census 2020 of Population & Housing

January 2019. Decennial census data are important for many reasons. Among these reasons is the required role of these data in the House of Representatives reapportionment and redistricting. These data are widely used for reapportionment and redistricting for state legislatures, special districts, cities, school districts and other geographies.

This section is focused on Census 2020 oriented toward data access and use developed by Warren Glimpse/ProximityOne. ProximityOne has no affiliation with the Census Bureau. This section is not sponsored by any Federal agency. This section is updated from time-to-time as Census 2020 approaches (April 1, 2020) and then more frequently as data become available. Updates relating to this section are sent to members of the ProximityOne User Group (join now).

Congressional Districts & State Legislative Districts Data Analytics Group
- examining geodemographic patterns & characteristics
- a focus on Congressional Districts & State Legislative Districts
- more detail & different updates compared to the ProximityOne User Group
- Join here. There is no fee.

  1. In the News
  2. Data Access & Use
  3. Census 2020 Milestones
  4. Geographic Support Programs
  5. Redistricting
  6. Administration & Finance
  7. Congressional Oversight & Funding

Decennial census data are a critically important part of the data stream that goes far beyond its legal authorization and role -- as with the previous decennial censuses. Broader importance of these data include ...
  • serve as a basis for redistricting
  • "complete count" data; not based on a survey or model, providing the most accurate data available on the count and distribution of selected attributes of the population and housing.
  • the only demographic data tabulated at the census block level for the U.S. wall-to-wall.
  • enable visual and geospatial analysis with use of the related TIGER/Line geographic database, precise geographic boundaries are available for census block and higher level geography,
  • help us evaluate past estimates and projections and provide an important baseline for post-census estimates and projections.
While we can develop a list of important applications, it is this above set of features that make the Census 2020, and all decennial census, data essential to evaluation, program management, analysis and planning.

In March 2021, just 3 years from now, the first data from Census 2020 will become available. See about related first Census 2010 block level data.

1. In the News [goto top]

01.31.19. Census 2020 Providence, RI P.L. 94-171 Prototype
- becomes available in March 2019
- see more at

03.29.18. Census Releases Planned Questions for Census 2020
- view Questions Planned for the 2020 Census and American Community Survey (PDF)
- The Census Act requires that the questions to be included in the next census
    be submitted to Congress no later than 2 years before the census date.

03.26.18. Politically mandated question on citizenship to be added to Census 2020 questionnaire
- question allegedly to help with Voting Rights Act (VRA)
- CVAP data already updated annually at BG level via ACS; not needed for VRA
- adding question would adversely impact our ability to help the very people intended to be served by VRA.
- adding question adds no value/utility to Census 2020 results
- adding question would increase cost, reduce response rate, reduce data quality overall,
    add uncertainty/risk to entire program.
- adding question raises the question:
    would DOJ seek to use confidential Census data for use in enforcement programs?
02.15.18. Census releases Census Bureau Budget for Fiscal Year 2019
- see budget summary
- see detailed budget
02.08.18. Census releases Census 2020 residence rules
- to count deployed troops at home bases, prisoners at facilities
- see 2020 Census Residence Criteria and Residence Situations document
02.01.18. Census 2020 to keep racial, ethnic categories used In 2010
- see more aboutannouncement about the race and ethnicity questions
12.02.17. Decision on Race/Ethnicity Delayed
The later the decision is made, the more uncertainty as how data are collected and tabulated on race and ethnicity data for 2020. A later decision will potentially affect cost, data quality and usability.
11.21.17. Leading Trump Census pick causes alarm
11.14.17. Census 2020 VDP Project -- new section
11.01.17. Hearing on the 2020 Census -- Full House Committee on Oversight and Government Reform

2. Data Access & Use [goto top]
Other than evaluation, data access & use is about using the Census 2020 data/results. It is toward the top of the list because it also the most important part of Census 2020. The first data from Census 2020 (other than state counts) will be released in March 2021. The data will be released over a period of years. The largest and most extensive datasets
  • P.L. 94-171 -- "redistricting data" ... Census 2010 version
  • Summary File 1; SF1 -- data to census block level ... Census 2010 version
  • Summary File 2; SF2 -- data to census tract level, SF1 topics iterated by race/origin ... Census 2010 version

Geographic data resources will be available ahead of the demographic data. Details on these data to follow.

3. Census 2020 Milestones [goto top]
The following summary of Census 2020 milestones is based partly on the Census 2020 Operational Plan. This section will be expanded with related notes over time.

Scroll section ...
11/11Begin 2020 Census
1/15 Launch 2020 Census Web site
10/15 Initial 2020 Census Operational Plan
6/16 Award Census Questionnaire Assistance Contract
8/16 Award Communications Contract
4/17 Census Topics to Congress
11/17 Start Local Update of Census Addresses (LUCA)
12/17 Deliver Final Residence Rules
12/17 Open Regional Census Centers
3/31/18 Census Questions to Congress
4/01/18 Census Day of April 1, 2018, Providence County, RI
  ... Census 2020 end-to-end test
1/19 Open Field Offices
3/31/19 Expected availability of Dress Rehearsal P.L. 94-171 data
  ... for use/integration with the Census 2020 redistricting program
2/20 Group Quarters Operations Begin
4/20 2020 Census Day
8/20 Nonresponse Followup (NRFU) Complete
- see about related 2016 test
10/20Expected availability of TIGER/Line Census 2020 shapefiles
  ... for use/integration with the Census 2020 redistricting program
11/20Count Review Complete
12/20 Deliver Counts to the President
3/21 Deliver Redistricting Counts to States
3/31/21 Availability of Final P.L. 94-171 data
  ... for use/integration with the Census 2020 redistricting program
9/21 Complete Local Update of Census Addresses (LUCA)
4/23 Release of Final 2020 Data Products Complete
9/23 Complete 2020 Census

4. Census 2020 Geographic Support Programs [goto top]
Scroll section ...
--Redistricting Block Boundary Suggestion Project (BBSP)
12/15 - Materials available to states in December 2015
12/16 - Verification in December 2016
--Redistricting Voting District Project (VTD)
12/17 - Materials available to states in December 2017
12/18 - Verification in December 2018
--Boundary and Annexation Survey (BAS)
.. - Annual response in December and January of each year
.. - Submit material through May
--Local Update of Census Addresses (LUCA) Program
11/17 - Invitation Fall of 2017
2/18 - Materials Available Winter 2018
7/19 - Feedback shipped Summer 2019
--School District Review Program (SDRP)
Biennial - Every two years with states
-- Participant Statistical Areas Program (PSAP) and Tribal Statistical Areas Program (TSAP)
12/18 - In planning materials available to December 2018
--Boundary Validation Program (BVP)
1/20 - Highest Elected Officials initial notification January 2020
6/20 - Final review of BAS 2020 May or June 2020

5. Census 2020 Redistricting [goto top]

Redistricting & Census 2020
- prepare now to engage in Census 2020 redistricting -- join in.
- use resources and processes outlined here updating as we move toward
  ... live Census 2020 redistricting data (March 2021) .. no cost

-- Phase 1 - Block Boundary Suggestion Project
12/15-5/16 - Initial Identification of Updates
12/16-5/17 - Verification of Updates
12/17-5/19 Phase 2 - Voting District Project
12/20+ Phase 3 - Delivery of the 2020 Census P.L. 94-171 Redistricting Data Files and Geographic Products
.. Phase 4 - Collection of Post-2020 Census Redistricting Plans
.. Phase 5 - Evaluation of 2020 Census Redistricting Program; Recommendations for 2030
partial source

6. Administration & Finance [goto top]

GAO Report -- Address Canvasing & Leveraging Information

7. Congress Oversight & Funding [goto top]

• House Committee on Appropriations:
    - Commerce, Justice, Science, and Related Agencies Subcommittee
      .. Members

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