The TIGER/Line shapefiles and related database files (.dbf) are an extract of selected geographic and cartographic information from the U.S. Census Bureau's Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) Database (MTDB). The MTDB represents a seamless national file with no overlaps or gaps between parts, however, each TIGER/Line shapefile is designed to stand alone as an independent data set, or they can be combined to cover the entire nation. Congressional Districts are the 435 areas from which people are elected to the U.S. House of Representatives. After the apportionment of congressional seats among the States based on census population counts, each State is responsible for establishing congressional districts for the purpose of electing representatives. Each congressional district is to be as equal in population to all other congressional districts in a State as practicable. The congressional districts for the 113th Congress (January 2013 to 2015) are the first Congressional Districts based on 2010 Census data. The TIGER/Line shapefiles for the District of Columbia, Puerto Rico, and the Island Areas (American Samoa, Guam, the Commonwealth of the Northern Mariana Islands, and the U.S. Virgin Islands) each contain a single record for the non-voting delegate district in these areas. The boundaries of all other congressional districts are provided to the Census Bureau through the Redistricting Data Program (RDP).
Purpose
In order for others to use the information in the Census MAF/TIGER database in a geographic information system (GIS) or for other geographic applications, the Census Bureau releases to the public extracts of the database in the form of TIGER/Line Shapefiles.
Temporal Extent
Currentness Reference
publication date
Time Instant
2013
Bounding Box
West
-179.147340
East
179.778470
North
71.352561
South
17.884813
Theme Keyword
boundaries
Theme Keyword Thesaurus
ISO 19115 Topic Categories
Place Keyword
United States
Place Keyword Thesaurus
Library of Congress Subject Headings
Temporal Keyword
2013
Temporal Keyword Thesaurus
None
Access Restrictions
None
Use Restrictions
None
Spatial Data Organization Information
Direct Spatial Reference Method
Vector
Point and Vector Object Information
SDTS Terms Description
SDTS Point and Vector Object Type
GT-polygon composed of chains
Point and Vector Object Count
437
Spatial Reference Information
Horizontal Coordinate System Definition
Geographic
Latitude Resolution
8.983152841195215e-009
Longitude Resolution
8.983152841195215e-009
Geographic Coordinate Units
Decimal Degrees
Geodetic Model
Horizontal Datum Name
D WGS 1984
Ellipsoid Name
WGS 1984
Semi-major Axis
6378137.0
Denominator of Flattening Ratio
298.257223563
Entity and Attribute Information
Entity Type
Entity Type Label
cd113
Entity Type Definition
113th Congressional District National
Entity Type Definition Source
U.S. Census Bureau
Attributes
FID
Internal feature number. (Sequential unique whole numbers that are automatically generated.)
Definition Source
Esri
Shape
Feature geometry. (Coordinates defining the features.)
Definition Source
Esri
DISTRICT
Congressional District Code
Definition Source
U.S. Bureau of the Census (BOC)
NAME
Name the congress person that represents the congressional district
Definition Source
Techpolitics
PARTY
The party affiliation
Definition Source
Techpolitics
STATE
US Postal Service State Abbreviation (Official US Postal Service State AbbreviationsUS Postal Service (USPS))
Definition Source
U.S. Bureau of the Census (BOC)
STFIPS
State FIPS code (Federal Information Processing StandardNational Institute of Standards and Technology (NIST))
Definition Source
RITA/BTS
Distribution Information
Distributor
Research and Innovative Technology Administration's Bureau of Transportaion Statistics (RITA/BTS)
Name
Metadata Reference Information
Metadata Date
20140925
Metadata Contact
Contact Information
Contact Organization Primary
Contact Organization
Research Data Services (RDS), Columbia University Libraries
Contact Person
GIS/Metadata Librarian
Contact Address
Address
420 W. 118th St., 215 IAB, MC 3301
City
New York
State or Province
NY
Postal Code
10027
Country
USA
Contact Voice Telephone
(212)854-6012
Contact Electronic Mail Address
data@library.columbia.edu
Metadata Standard Name
FGDC Content Standard for Digital Geospatial Metadata
