2017 Cartographic Boundary File, Current Census Tract for Minnesota, 1:500,000

This page last updated: 03/2018
Metadata created using Content Standard for Digital Geospatial Metadata


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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. Department of Commerce, U.S. Census Bureau, Geography Division, Cartographic Products and Services Branch
Title 2017 Cartographic Boundary File, Current Census Tract for Minnesota, 1:500,000
Abstract The 2017 cartographic boundary shapefiles are simplified representations of selected geographic areas from the U.S. Census Bureau's Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) Database (MTDB). These boundary files are specifically designed for small-scale thematic mapping. When possible, generalization is performed with the intent to maintain the hierarchical relationships among geographies and to maintain the alignment of geographies within a file set for a given year. Geographic areas may not align with the same areas from another year. Some geographies are available as nation-based files while others are available only as state-based files.

Census tracts are small, relatively permanent statistical subdivisions of a county or equivalent entity, and were defined by local participants as part of the 2010 Census Participant Statistical Areas Program. The Census Bureau delineated the census tracts in situations where no local participant existed or where all the potential participants declined to participate. The primary purpose of census tracts is to provide a stable set of geographic units for the presentation of census data and comparison back to previous decennial censuses. Census tracts generally have a population size between 1,200 and 8,000 people, with an optimum size of 4,000 people. When first delineated, census tracts were designed to be homogeneous with respect to population characteristics, economic status, and living conditions. The spatial size of census tracts varies widely depending on the density of settlement. Physical changes in street patterns caused by highway construction, new development, and so forth, may require boundary revisions. In addition, census tracts occasionally are split due to population growth, or combined as a result of substantial population decline. Census tract boundaries generally follow visible and identifiable features. They may follow legal boundaries such as minor civil division (MCD) or incorporated place boundaries in some states and situations to allow for census tract-to-governmental unit relationships where the governmental boundaries tend to remain unchanged between censuses. State and county boundaries always are census tract boundaries in the standard census geographic hierarchy. In a few rare instances, a census tract may consist of noncontiguous areas. These noncontiguous areas may occur where the census tracts are coextensive with all or parts of legal entities that are themselves noncontiguous. For the 2010 Census, the census tract code range of 9400 through 9499 was enforced for census tracts that include a majority American Indian population according to Census 2000 data and/or their area was primarily covered by federally recognized American Indian reservations and/or off-reservation trust lands; the code range 9800 through 9899 was enforced for those census tracts that contained little or no population and represented a relatively large special land use area such as a National Park, military installation, or a business/industrial park; and the code range 9900 through 9998 was enforced for those census tracts that contained only water area, no land area.
Purpose These files were specifically created to support small-scale thematic mapping. To improve the appearance of shapes at small scales, areas are represented with fewer vertices than detailed TIGER/Line Shapefiles. Cartographic boundary files take up less disk space than their ungeneralized counterparts. Cartographic boundary files take less time to render on screen than TIGER/Line Shapefiles. You can join this file with table data downloaded from American FactFinder by using the AFFGEOID field in the cartographic boundary file. If detailed boundaries are required, please use the TIGER/Line Shapefiles instead of the generalized cartographic boundary files.
Time Period of Content Date
Currentness Reference publication date
Progress Complete
Maintenance and Update Frequency None planned. No changes or updates will be made to this version of the cartographic boundary files. New versions of the cartographic boundary files will be produced on an annual release schedule. Types of geography released may vary from year to year.
Spatial Extent of Data
Bounding Coordinates -97.239209
-89.491739
49.384358
43.499356
Place Keywords Minnesota
Theme Keywords Boundaries
Theme Keyword Thesaurus ISO 19115 Topic Categories
Access Constraints None
Use Constraints The intended display scale for this file is 1:500,000. This file should not be displayed at scales larger than 1:500,000.

These products are free to use in a product or publication, however acknowledgement must be given to the U.S. Census Bureau as the source. The boundary information is for visual display at appropriate small scales only. Cartographic boundary files should not be used for geographic analysis including area or perimeter calculation. Files should not be used for geocoding addresses. Files should not be used for determining precise geographic area relationships.
Contact Person Information ,

4600 Silver Hill Road
Washington, DC  20233-7400
Phone: 301.763.1128
Fax: 301.763.4710
Email: geo.geography@census.gov
Browse Graphic None available
Associated Data Sets

Section 2 Data Quality
Attribute Accuracy Accurate against American National Standards Institute (ANSI) Publication INCITS 446-2008 (Geographic Names Information System (GNIS)) at the 100% level for the codes and base names present in the file. The remaining attribute information has been examined but has not been fully tested for accuracy.
Logical Consistency The Census Bureau performed automated tests to ensure logical consistency of the source database. Segments making up the outer and inner boundaries of a polygon tie end-to-end to completely enclose the area. All polygons were tested for closure. The Census Bureau uses its internally developed geographic update system to enhance and modify spatial and attribute data in the Census MAF/TIGER database. Standard geographic codes, such as INCITS (formerly FIPS) codes for states, counties, municipalities, county subdivisions, places, American Indian/Alaska Native/Native Hawaiian areas, and congressional districts are used when encoding spatial entities. The Census Bureau performed spatial data tests for logical consistency of the codes during the compilation of the original Census MAF/TIGER database files. Feature attribute information has been examined but has not been fully tested for consistency.

For the cartographic boundary files, the Point and Vector Object Count for the G-polygon SDTS Point and Vector Object Type reflects the number of records in the file's data table. For multi-polygon features, only one attribute record exists for each multi-polygon rather than one attribute record per individual G-polygon component of the multi-polygon feature. Cartographic Boundary File multi-polygons are an exception to the G-polygon object type classification. Therefore, when multi-polygons exist in a file, the object count will be less than the actual number of G-polygons.
Completeness The cartographic boundary files are generalized representations of extracts taken from the MAF/TIGER Database. Generalized boundary files are clipped to a simplified version of the U.S. outline. As a result, some off-shore areas may be excluded from the generalized files. Some small geographic areas, holes, or discontiguous parts of areas may not be included in generalized files if they are not visible at the target scale.
Horizontal Positional Accuracy Data are not accurate. Data are generalized representations of geographic boundaries at 1:500,000.
Lineage Spatial data were extracted from the MAF/TIGER database and processed through a U.S. Census Bureau batch generalization system.

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

Section 4 Coordinate System
Horizontal Coordinate Scheme
Horizontal Datum North American Datum of 1983
Horizontal Units

Section 5 Attributes
Overview
Detailed Citation
Table Detail:
cb_2017_27_tract_500k.shp - Current Census Tract (state-based) (U.S. Census Bureau)
Field NameValid ValuesDefinitionDefinition Source
STATEFP
-
Current state Federal Information Processing Series (FIPS) codeU.S. Census Bureau
COUNTYFP
-
Current county Federal Information Processing Series (FIPS) codeU.S. Census Bureau
TRACTCEenumeratedCurrent census tract codeU.S. Census Bureau
000000Water tract in some coastal and Great Lakes water and territorial seaU.S. Census Bureau
000100 to 998999Census tract numberU.S. Census Bureau
AFFGEOID
-
American FactFinder summary level code + geovariant code + '00US' + GEOIDU.S. Census Bureau
GEOID
-
Census tract identifier; a concatenation of current state Federal Information Processing Series (FIPS) code, county FIPS code, and census tract codeU.S. Census Bureau
NAME
-
Current census tract name, this is the census tract code converted to an integer or integer plus two-digit decimal if the last two characters of the code are not both zeros.U.S. Census Bureau
LSADenumeratedCurrent legal/statistical area description code for Census tractU.S. Census Bureau
CTCensus Tract (prefix)U.S. Census Bureau
ALAND0 to 9,999,999,999,999Current land area (square meters)U.S. Census Bureau
AWATER0 to 9,999,999,999,999Current water area (square meters)U.S. Census Bureau


Section 6 Distribution
Publisher
Publication Date 03/2018
Contact Person Information ,

4600 Silver Hill Road
Washington, DC  20233-7400
Phone: 301.763.1128
Fax: 301.763.4710
Email: geo.geography@census.gov
Distributor's Data Set Identifier
Distribution Liability No warranty, expressed or implied is made with regard to the accuracy of these data, and no liability is assumed by the U.S. Government in general or the U.S. Census Bureau in specific as to the spatial or attribute accuracy of the data. The act of distribution shall not constitute any such warranty and no responsibility is assumed by the U.S. government in the use of these files. The boundary information is for small-scale mapping purposes only; boundary depiction and designation for small-scale mapping purposes do not constitute a determination of jurisdictional authority or rights of ownership or entitlement and they are not legal land descriptions.
Ordering Instructions To obtain more information about ordering Cartographic Boundary Files visit https://www.census.gov/geo/www/tiger.
Online Linkage I AGREE to the notice in "Distribution Liability" above. Clicking to agree will either begin the download process, link to a service, or provide more instructions. See "Ordering Instructions" above for details.

Section 7 Metadata Reference
Metadata Date 03/2018
Contact Person Information ,

4600 Silver Hill Road
Washington, DC  20233-7400
Phone: 301.763.1128
Fax: 301.763.4710
Email: geo.geography@census.gov
Metadata Standard Name Content Standard for Digital Geospatial Metadata
Metadata Standard Version FGDC-STD-001-1998
Metadata Standard Online Linkage


This page last updated: 03/2018
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