Metadata: Census 2020 Geography - Blocks, Block Groups, Tracts, Counties, and County Subdivisions

Census 2020 Geography - Blocks, Block Groups, Tracts, Counties, and County Subdivisions

This page last updated: 01/12/2023
Metadata created using Minnesota Geographic Metadata Guidelines


Go to Section:
  1. Overview
  2. Data Quality
  3. Data Organization
  4. Coordinate System
  5. Attributes
  6. Distribution - Get Data
  7. Metadata Reference

Section 1: Overview

Originator:U.S. Census Bureau and the Metropolitan Council

Title: Census 2020 Geography - Blocks, Block Groups, Tracts, Counties, and County Subdivisions

Abstract: This 'Redistricting' version of the census data is the first release of the data.

This 2020 census redistricting geography database of the 7 county metropolitan area and the additional 12 collar county area was developed from the U.S. Census Bureau's Redistricting Census 2020 TIGER/Line files.

The Metropolitan Council downloaded this data from the Census Bureau's FTP site and created block, block group, tract, county subdivision (city), and county datasets from the original data. The block dataset was updated on Jan. 12, 2023 to add new Census Bureau urban and rural designations.

Purpose: For mapping and analysis of data from the U. S. Census Bureau.

Time Period of Content Date: 01/01/2020

Currentness Reference: 2020 U.S. Census

Progress: Complete

Maintenance and Update Frequency: None Planned

Spatial Extent of Data: Seven County Twin Cities Metropolitan Area and its 12 collar counties.

Bounding Coordinates: -94.664
-92.117
45.736
44.183

Place Keywords: Twin Cities, Anoka County, Carver County, Dakota County, Hennepin County, Ramsey County, Scott County, Washington County, Chisago County, Isanti County, Sherburne County, Wright County, McLeod County, Sibley County, Le Sueur County, Rice County, Goodhue County, Pierce County, St. Croix County, Polk County

Theme Keywords: census, demographics, census boundaries, 2020 census, blocks, block boundaries, census blocks, census block groups, census tracts, counties, county subdivisions, FIPS Place, MCDs

Theme Keyword Thesaurus:

Access Constraints: None. This dataset is public domain under the Minnesota Government Data Practices Act (Minnesota Statutes Chapter 13). If the dataset is not available from the Online Linkage in Section 6, please contact the Distribution Contact Person.

Use Constraints: None. This dataset is public domain under the Minnesota Government Data Practices Act (Minnesota Statutes Chapter 13).

Contact Person Information: Laine McNamara, Business Systems Analyst 2
Metropolitan Council
390 Robert Street North
St. Paul, MN  55106
Phone: 651.602.1335
Email: laine.mcnamara@metc.state.mn.us

Browse Graphic: None available

Associated Data Sets: Decennial Census 2020

Section 2: Data Quality

Attribute Accuracy: Boundaries in TIGER files are close to but do not exactly follow natural borders like roads and rivers. In most cases, these discrepancies are small. However, the Census Bureau's county subdivision file has errors, particularly with the City of Carver and Dahlgren Township. For more information, see "How We Edited..." spreadsheet with more detail (https://metrocouncil.org/Data-and-Maps/Research-and-Data/Census-Data/How-we-edited-initial-2020-Census-Data.aspx). Users who need accurate county subdivision data should consult the Metropolitan Council's Counties, Cities, and Townships file.

Logical Consistency: Each county polygon file is topologically 'clean'.

Completeness: All counties are included.

Horizontal Positional Accuracy: Presumed to meet source material standards: for 1:100,000-scale mapping, National Map Accuracy Standards state a horizontal positional accuracy of not less than +/- 167 feet for 90% of points tested.

Vertical Positional Accuracy: Not applicable

Lineage: Data originated at the U.S. Bureau of the Census, as 2020 Census Redistricting TIGER/Line files (05/23/2021).

7-County FIPS
27-003 Anoka
27-019 Carver
27-037 Dakota
27-053 Hennepin
27-123 Ramsey
27-139 Scott
27-163 Washington

Collar County FIPS
27-025 Chisago
27-049 Goodhue
27-059 Isanti
27-079 LeSueur
27-085 McLeod
27-131 Rice
27-141 Sherburne
27-143 Sibley
27-171 Wright
55-093 Pierce
55-095 Polk
55-109 St. Croix

Statewide shape files were downloaded from the Census Bureau TIGER FTP site https://www.census.gov/geo/maps-data/data/tiger-line.html for the following 2020 boundaries: County, County Subdivisions, Tract, Block Group and Block. 7-county metro area was selected from each statewide shapefile and saved as a new shapefile. 9 MN collar counties and 3 WI collar counties were selected from each statewide shapefile and saved as a new shapefile - then Appended to 1-collar county shape file.

County_2020 - from state-based file - selected
Cousub_2020 - from state-based file - selected (see Attribute Accuracy section for further details)
Tract_2020 - from state-based file - selected
Blkgrp_2020 - from state-based file - selected
Block_2020 - from state-based file - selected
Place_2020 - from state-based file - selected

Section 3: Spatial Data Organization (not used in this metadata)


Section 4: Coordinate System

Horizontal Coordinate Scheme: Universal Transverse Mercator

UTM Zone Number: 15

Horizontal Datum: NAD83

Horizontal Units: meters

Vertical Datum:

Vertical Units:

Depth Datum:

Depth Units:

Section 5: Attributes

Overview:
Block
State-based Shapefile Record Layout (2010 Geography)
File Name: tl_2020_<state FIPS>_tabblock20.shp

Field Name, Length, Type, Description
STATEFP20, 2, String, 2020 Census state FIPS code
COUNTYFP20, 3, String, 2020 Census county FIPS code
TRACTCE20, 6, String, 2020 Census census tract code
BLOCKCE20, 4, String, 2020 Census tabulation block number
GEOID20, 15, String, Block identifier; a concatenation of 2020 Census state FIPS code, county FIPS code, census tract code and tabulation block number.
NAME20, 10, String, 2020 Census tabulation block name; a concatenation of 'Block' and the current tabulation block number
MTFCC20, 5, String, MAF/TIGER feature class code (G5040)
UR20, 1, String, 2020 Census urban/rural indicator
UACE20, 5, String, 2020 Census urban area code
UATYPE20, 1, String, 2020 Census urban area type
FUNCSTAT20, 1, String, 2020 Census functional status
ALAND20, 14, Number, 2020 Census land area (square meters)
AWATER20, 14, Number, 2020 Census water area (square meters)
INTPTLAT20, 11, String, 2020 Census latitude of the internal point
INTPTLON20, 12, String, 2020 Census longitude of the internal point


Block Group
State-based Shapefile Record Layout (Current)
File Name: tl_2020_<state FIPS>_bg20.shp

Field Length Type Description
STATEFP20, 2, String, Current (2020) state FIPS code
COUNTYFP20, 3, String, Current (2020) county FIPS code
TRACTCE20, 6, String, Current (2020) census tract code
BLKGRPCE20, 1, String, Current (2020) block group number
GEOID20, 12, String, Block identifier; a concatenation of current (2020) state FIPS code, county FIPS code, census tract code and block group number.
NAMELSAD20, 13, String, Current (2020) translated legal/statistical area description and the block group number
MTFCC20, 5, String, MAF/TIGER feature class code (G5030)
FUNCSTAT20, 1, String, Current (2020) functional status
ALAND20, 14, Number, Current (2020) land area (square meters)
AWATER20, 14, Number, Current (2020) water area (square meters)
INTPTLAT20, 11, String, Current (2020) latitude of the internal point
INTPTLON20, 12, String, Current (2020) longitude of the internal point


Census Tract
State-based Shapefile Record Layout (Current)
File Name: tl_2020_<state FIPS>_tract20.shp

Field Length Type Description
STATEFP20, 2, String, Current (2020) state FIPS code
COUNTYFP20, 3, String, Current (2020) county FIPS code
TRACTCE20, 6, String, Current (2020) census tract code
GEOID20, 11, String, Census tract identifier; a concatenation of current (2020) state FIPS code, county FIPS code, and census tract code
NAME20, 7, String, Current (2020) census tract name, this is the census tract code converted to an integer or integer with 2-decimals if the last two characters of the code are not both zeros.
NAMELSAD20, 20, String, Current (2020) translated legal/statistical area description and the census tract name
MTFCC20, 5, String, MAF/TIGER feature class code (G5020)
FUNCSTAT20, 1, String, Current (2020) functional status
ALAND20, 14, Number, Current (2020) land area (square meters)
AWATER20, 14, Number, Current (2020) water area (square meters)
INTPTLAT20, 11, String, Current (2020) latitude of the internal point
INTPTLON20, 12, String, Current (2020) longitude of the internal point


County and Equivalent Entity
State-based Shapefile Record Layout (Current)
File Name: tl_2020_us_county.shp

Field Length Type Description
STATEFP20, 2, String, Current (2020) state FIPS code
COUNTYFP20, 3, String, Current (2020) county FIPS code
COUNTYNS20, 8, String, Current (2020) county ANSI code
GEOID20, 5, String, County identifier; a concatenation of Current (2020) state FIPS code and county FIPS code
NAME20, 100, String, Current (2020) county name
NAMELSAD20, 100, String, Current (2020) name and the translated legal/statistical area description for county
LSAD20, 2, String, Current (2020) legal/statistical area description code for county
CLASSFP20, 2, String, Current (2020) FIPS class code
MTFCC20, 5, String, MAF/TIGER feature class code (G4020)
CSAFP20, 3, String, Current (2020) combined statistical area code
CBSAFP20, 5, String, Current (2020) metropolitan statistical area/micropolitan statistical area code
METDIVFP20, 5, String, Current (2020) metropolitan division code
FUNCSTAT20, 1, String, Current (2020) functional status
ALAND20, 14, Number, Current (2020) land area (square meters)
AWATER20, 14, Number, Current (2020) water area (square meters)
INTPTLAT20, 11, String, Current (2020) latitude of the internal point
INTPTLON20, 12, String, Current (2020) longitude of the internal point


County Subdivision
State-based Shapefile Record Layout (Current)
File Name: tl_2020_<state FIPS>_cousub20.shp

Field Length Type Description
STATEFP20 2 String Current (2020) state FIPS code
COUNTYFP20 3 String Current (2020) county FIPS code
COUSUBFP20 5 String Current (2020) county subdivision FIPS code
COUSUBNS20 8 String Current (2020) ANSI feature code for the county subdivision
GEOID20 10 String County subdivision identifier; a concatenation of current (2020) state FIPS code, county FIPS code, and county subdivision FIPS code.
NAME20 100 String Current (2020) county subdivision name
NAMELSAD20 100 String Current (2020) name and the translated legal/statistical area description code for county subdivision
LSAD20 2 String Current (2020) legal/statistical area description code for county subdivision
CLASSFP20 2 String Current (2020) FIPS class code
MTFCC20 5 String MAF/TIGER feature class code (G4040)
CNECTAFP20 3 String Current (2020) combined New England city and town area code
NECTAFP20 5 String Current (2020) New England city and town area code
NCTADVFP20 5 String Current (2020) New England city and town area division code
FUNCSTAT20 1 String Current (2020) functional status
ALAND20 14 Number Current (2020) land area (square meters)
AWATER20 14 Number Current (2020) water area (square meters)
INTPTLAT20 11 String Current (2020) latitude of the internal point
INTPTLON20 12 String Current (2020) longitude of the internal point

Detailed Citation: Redistricting Census 2020 TIGER/Line Files https://www.census.gov/geographies/mapping-files/time-series/geo/tiger-line-file.html

Redistricting Census 2020 TIGER/Line Technical Documentation and Metadata

Table Detail:

Section 6: Distribution

Publisher: Metropolitan Council

Publication Date: 05/23/2020

Contact Person Information: Laine McNamara, Business Systems Analyst 2
Metropolitan Council
390 Robert Street North
St. Paul, MN  55106
Phone: 651.602.1335
Email: laine.mcnamara@metc.state.mn.us

Distributor's Data Set Identifier: Census2020Tiger

Distribution Liability: NOTICE: The Geographic Information System (GIS) Data to which this notice is attached are made available pursuant to the Minnesota Government Data Practices Act (Minnesota Statutes Chapter 13). THE GIS DATA ARE PROVIDED TO YOU AS IS AND WITHOUT ANY WARRANTY AS TO THEIR PERFORMANCE, MERCHANTABILITY, OR FITNESS FOR ANY PARTICULAR PURPOSE. The GIS Data were developed by the Metropolitan Council for its own internal business purposes. The Metropolitan Council does not represent or warrant that the GIS Data or the data documentation are error-free, complete, current, or accurate. You are responsible for any consequences resulting from your use of the GIS Data or your reliance on the GIS Data. You should consult the data documentation for this particular GIS Data to determine the limitations of the GIS Data and the precision with which the GIS Data may depict distance, direction, location, or other geographic features. If you transmit or provide the GIS Data (or any portion of it) to another user, it is recommended that the GIS Data include a copy of this disclaimer and this metadata.

Ordering Instructions: See Online Linkage Below

Online Linkage:Download Page

Section 7: Metadata Reference

Metadata Date: 01/12/2023

Contact Person Information: Laine McNamara, Business Systems Analyst 2
Metropolitan Council
390 Robert Street North
St. Paul, MN  55106
Phone: 651.602.1335
Email: laine.mcnamara@metc.state.mn.us

Metadata Standard Name: Minnesota Geographic Metadata Guidelines

Metadata Standard Version: 1.2



This page last updated: 01/12/2023
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