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Census Blocks with Redistricting Data, Wisconsin 2020

Identification Information

Citation
Title
Census Blocks with Redistricting Data, Wisconsin 2020
Originator
Environmental Systems Research Institute, Inc. (Esri)
Creation Date
2021-08-12
Publication Date
2021-08-12
Revision Date
2021-08-12
Edition
2020
Geospatial Data Presentation Form
mapDigital
Other Citation Details
This is an archived dataset at UW-Madison.
Abstract
This layer contains block level 2020 Decennial Census redistricting data as reported by the U.S. Census Bureau for Wisconsin. The attributes come from the 2020 Public Law 94-171 (P.L. 94-171) tables.
Purpose
[This layer was created to provide a block level, statewide view of the 2020 Decennial Census redistricting data for Wisconsin.] This data is intended for reference and mapping purposes, and may be used for basic applications such as viewing, querying, and map output production, or to provide a basemap to support graphical overlays and analysis with other spatial data.
Supplemental Information
Each attribute maintains its specified name from Census, but also has a descriptive alias name and long description derived from the technical documentation provided by the Census. The following alterations have been made to the tabular data: Joined all tables to create one wide attribute table: P1 - Race P2 - Hispanic or Latino, and not Hispanic or Latino by Race P3 - Race for the Population 18 Years and Over P4 - Hispanic or Latino, and not Hispanic or Latino by Race for the Population 18 Years and Over H1 - Occupancy Status (Housing) P5 - Group Quarters Population by Group Quarters Type (correctional institutions, juvenile facilities, nursing facilities/skilled nursing, college/university student housing, military quarters, etc.) Header; After joining, dropped fields: FILEID, STUSAB, CHARITER, CIFSN, LOGRECNO, GEOVAR, GEOCOMP, LSADC; GEOCOMP was renamed to GEOID and moved be the first column in the table, the original GEOID was dropped; Placeholder fields for future legislative districts have been dropped: CD118, CD119, CD120, CD121, SLDU22, SLDU24, SLDU26, SLDU28, SLDL22, SLDL24 SLDL26, SLDL28; P0020001 was dropped, as it is duplicative of P0010001. Similarly, P0040001 was dropped, as it is duplicative of P0030001; In addition to calculated fields, County_Name and State_Name were added. The following calculated fields have been added: PCT_P0030001: Percent of Population 18 Years and Over PCT_P0020002: Percent Hispanic or Latino PCT_P0020005: Percent White alone, not Hispanic or Latino PCT_P0020006: Percent Black or African American alone, not Hispanic or Latino PCT_P0020007: Percent American Indian and Alaska Native alone, not Hispanic or Latino PCT_P0020008: Percent Asian alone, Not Hispanic or Latino PCT_P0020009: Percent Native Hawaiian and Other Pacific Islander alone, not Hispanic or Latino PCT_P0020010: Percent Some Other Race alone, not Hispanic or Latino PCT_P0020011: Percent Population of Two or More Races, not Hispanic or Latino PCT_H0010002: Percent of Housing Units that are Occupied PCT_H0010003: Percent of Housing Units that are Vacant Please note these percentages might look strange at the individual block level, since this data has been protected using differential privacy.* *To protect the privacy and confidentiality of respondents, data has been protected using differential privacy techniques by the U.S. Census Bureau. This means that some individual blocks will have values that are inconsistent or improbable. However, when aggregated up, these issues become minimized. The pop-up on this layer uses Arcade to display aggregated values for the surrounding area rather than values for the block itself. Esri published the layer online here: https://www.arcgis.com/home/item.html?id=a491650ec7e544fbb0ad41a8d7ba1e6f; the layer was downloaded county by county and appended to create a statewide layer.
Temporal Extent
Time Instant
2020-12-31T00:00:00
Bounding Box
West
-92.889441
East
-86.249554
North
47.309831
South
42.491728
ISO Topic Category
boundaries
society
Place Keyword
Wisconsin
Place Keyword Thesaurus
Theme Keyword
Census districts
Theme Keyword Thesaurus
Resource Constraints
Use Limitation
Although this data is being distributed by the University of Wisconsin-Madison, no warranty expressed or implied is made by the University as to the accuracy of the data and related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the University in the use of this data, or related materials.
Maintenance and Update Frequency
continual
Language
eng
Credit
Source data from U.S. Census Bureau with additional attributes added by Esri. Esri downloaded the data from the U.S. Census Bureau FTP site, imported into SAS format and joined to the 2020 TIGER boundaries. Boundaries are sourced from the 2020 TIGER/Line Geodatabases. Boundaries have been projected into Web Mercator and each attribute has been given a clear descriptive alias name. No alterations have been made to the vertices of the data.
Point of Contact
Contact
U.S. Census Bureau
Point of Contact
Contact
Howard Veregin
Position Name
State Cartographer
Delivery Point
550 N. Park St
City
Madison
Administrative Area
WI
Postal Code
53706
Country
US
Email
veregin@wisc.edu
Point of Contact
Contact
Environmental Systems Research Institute, Inc. (Esri)

Spatial Reference Information

Reference System Identifier
Code
3857
Code Space
EPSG
Version
8.8(9.3.1.2)

Data Quality Information

Quantitative Attribute Accuracy Report
Lineage
Statement
Archived dataset at UW-Madison.
Process Step
Description
Esri published the layer onlne here: https://www.arcgis.com/home/item.html?id=a491650ec7e544fbb0ad41a8d7ba1e6f
Process Date
2021-08-12T00:00:00
Process Step
Description
This layer was downloaded county by county and appended to create a statewide layer.
Process Date
2021-11-10T00:00:00

Distribution Information

Format Name
File Geodatabase Feature Class
Format Version
10.x
Distributor
University of Wisconsin-Madison
Online Access
https://gisdata.wisc.edu/public/WI_CensusBlocks_RedistrictingData_2020.zip
Protocol
WWW:DOWNLOAD-1.0-http--download
Name
GeoData@Wisconsin
Function
download

Spatial Representation Information

Vector
Topology Level
geometryOnly
Vector Object Type
composite
Vector Object Count
203059

Metadata Reference Information

Hierarchy Level
dataset
Metadata File Identifier
367B52FB-6AEC-47F9-978D-29D1876AF057
Metadata Date Stamp
2021-11-11
Metadata Standard Name
ISO 19139 Geographic Information - Metadata - Implementation Specification
Metadata Standard Version
2007
Character Set
utf8
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