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1:1,000,000-Scale Core Based Statistical Areas, 2013

Identification Information

Citation
Title
1:1,000,000-Scale Core Based Statistical Areas, 2013
Originator
National Atlas of the United States
Publisher
National Atlas of the United States
Publication Date
2013-09-01
Identifier
http://purl.stanford.edu/bn076jc5300
Geospatial Data Presentation Form
mapDigital
Collection Title
National Atlas of the United States of America, 1997-2014
Other Citation Details
These data were downloaded from the National Atlas website (http://www.nationalatlas.gov/atlasftp.html) in August 2014.
Abstract
This polygon shapefile contains core based statistical areas in the United States and Puerto Rico. The map layer was created from the CENSUS 2010 TIGER/Line files produced by the U.S. Census Bureau. Core Based Statistical Areas (CBSAs) comprise both Metropolitan and Micropolitan Statistical Areas. CBSAs are defined by the Office of Management and Budget (OMB) and consist of the county, counties, or equivalent entities associated with at least one urban core (urbanized area or urban cluster) having a population of at least 10,000. Adjacent counties having a high degree of social and economic integration with the core as measured through commuting ties with the counties containing the core are included as part of a CBSA. There are two categories of CBSAs: Metropolitan Statistical Areas are CBSAs associated with at least one urbanized area that has a population of at least 50,000. The metropolitan statistical area comprises the central county or counties or equivalent entities containing the core, plus adjacent outlying counties having a high degree of social and economic integration with the central county or counties as measured through commuting. Micropolitan Statistical Areas are CBSAs associated with at least one urban cluster that has a population of at least 10,000 but less than 50,000. The micropolitan statistical area comprises the central county or counties or equivalent entities containing the core, plus adjacent outlying counties having a high degree of social and economic integration with the central county or counties as measured through commuting. The CBSAs for the 2010 Census are those defined by OMB and published in December 2009. This layer is part of the 1997-2014 edition of the National Atlas of the United States.
Purpose
These data are intended for geographic display and analysis at the national level, and for large regional areas. The data should be displayed and analyzed at scales appropriate for 1:1,000,000-scale data. No responsibility is assumed by the National Atlas of the United States in the use of these data.
Supplemental Information
Information about National Atlas Web services can be found on the Web Map and Web Feature Services page; see http://nationalatlas.gov/infodocs/webservices.html.
Scale Denominator
1000000
Temporal Extent
Currentness Reference
Publication date
Time Instant
2013-09-01T00:00:00
Bounding Box
West
-160.246559
East
-65.565668
North
65.454475
South
17.884026
ISO Topic Category
society
Place Keyword
United States
Alaska
Alabama
Arizona
Arkansas
Colorado
Connecticut
Delaware
Florida
Georgia
Hawaii
Idaho
Illinois
Indiana
Iowa
Kansas
Kentucky
Louisiana
Maine
Maryland
Massachusetts
Michigan
Minnesota
Mississippi
Missouri
Montana
Nebraska
Nevada
New Hampshire
New Jersey
New Mexico
New York (State)
North Carolina
North Dakota
Ohio
Oklahoma
Oregon
Pennsylvania
Rhode Island
South Carolina
South Dakota
Tennessee
Texas
Utah
Vermont
Virginia
Washington (D.C.)
Washington (State)
West Virginia
Wisconsin
Wyoming
Puerto Rico
Place Keyword Thesaurus
geonames
Theme Keyword
Metropolitan areas
Theme Keyword Thesaurus
lcsh
Resource Constraints
Use Limitation
None. Acknowledgment of The National Atlas of the United States of America would be appreciated in products derived from these data.
Legal Constraints
Use Limitation
Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made by the U.S. Geological Survey regarding the utility of the data on any other system, nor shall the act of distribution constitute any such warranty. No responsibility is assumed by the U.S. Geological Survey in the use of these data.
Status
completed
Maintenance and Update Frequency
irregular
Collection
Collection Title
National Atlas of the United States of America, 1997-2014
URL
http://purl.stanford.edu/cv275yx9215
Language
eng
Credit
National Atlas of the United States. (2013). 1:1,000,000-Scale Core Based Statistical Areas, 2013. National Atlas of the United States. Available at: http://purl.stanford.edu/bn076jc5300.
Point of Contact
Contact
National Atlas of the United States
Delivery Point
12201 Sunrise Valley Drive
City
Reston
Administrative Area
VA
Postal Code
20192
Email
atlasmail@usgs.gov
Phone
1-888-ASK-USGS (1-888-275-8747)

Spatial Reference Information

Reference System Identifier
Code
4269
Code Space
EPSG
Version
8.6.2

Data Quality Information

Lineage
Process Step
Description
The TIGER CBSA files were downloaded from the U.S. Census Bureau web site and loaded to ArcMap along with the National Atlas 1M Counties 2013 data. A point file was created containing centroids for all counties, and from that point file, all the points falling in CBSAs were selected and saved as a new file. The Census CBSA attributes were associated with the appropriate counties by joining the CBSA file to the selected county centroids; the resulting file was then joined to the county polygons. The dissolve tool was used to combine all the counties within each CBSA, by dissolving on the name and CBSA identification number, and the State. Some CBSAs cross State lines; these areas were merged across the State lines, population and square miles values were totaled, and the value for State was adjusted to include all appropriate State abbreviations. At the end of this step, all counties that are not part of a CBSA had been deleted from the data set. Extraneous fields were eliminated and the table was reordered. The data were converted to an Albers Equal Area projection. An attribute field for perimeter was added, and the values were calculated using ArcGIS. The data were then converted back to geographic coordinates. The attribute names and values were adjusted to meet National Atlas standards, and the map layer was saved in shapefile and in file geodatabase formats.
Process Date
2013-08-01T00:00:00
Source
Title
1:1,000,000-Scale County Boundaries of the United States
Publication Date
2013-05-01
Originator
National Atlas of the United States
Publisher
National Atlas of the United States
Description
Spatial and attribute information
Source
Title
2010 TIGER/Line Shapefiles - CBSA
Publication Date
2011-01-01
Originator
U.S. Census Bureau
Publisher
U.S. Census Bureau
Description
Spatial and attribute information

Distribution Information

Format Name
Shapefile
Distributor
Stanford Geospatial Center
Online Access
http://purl.stanford.edu/bn076jc5300
Protocol
http
Name
cbsareap010g.shp
Function
download

Content Information

Feature Catalog Description
Compliance Code
false
Language
eng
Included With Dataset
true
Feature Catalog Citation
Title
Feature catalog for 1:1,000,000-Scale Core Based Statistical Areas, 2013
Feature Catalog Identifier
7baa35f1-af39-4be5-a6ae-d468bfaa3466

Spatial Representation Information

Vector
Topology Level
geometryOnly
Vector Object Type
composite
Vector Object Count
955

Metadata Reference Information

Hierarchy Level
dataset
Metadata File Identifier
edu.stanford.purl:bn076jc5300
Parent Identifier
http://purl.stanford.edu/cv275yx9215.mods
Dataset URI
http://purl.stanford.edu/bn076jc5300
Metadata Date Stamp
2016-01-12
Metadata Standard Name
ISO 19139 Geographic Information - Metadata - Implementation Specification
Metadata Standard Version
2007
Character Set
utf8
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