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1:1,000,000-Scale Congressional Districts of the United States – 113th Congress

Metadata also available as [Parseable text] - [XML]

Frequently anticipated questions:


What does this data set describe?

Title:
1:1,000,000-Scale Congressional Districts of the United States - 113th Congress
Abstract:
This map layer portrays the Congressional districts of the United States, Puerto Rico, and the U.S. Virgin Islands, for the 113th Congress.
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>.
Many States have more detailed Congressional district information available online; links for most States are provided under the source information. For States where a link is not listed, please contact the State government for further information.
  1. How should this data set be cited?

    National Atlas of the United States, 201304, 1:1,000,000-Scale Congressional Districts of the United States - 113th Congress: National Atlas of the United States, Rolla, MO.

    Online Links:

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: 170
    East_Bounding_Coordinate: -64
    North_Bounding_Coordinate: 72
    South_Bounding_Coordinate: 17

  3. What does it look like?

  4. Does the data set describe conditions during a particular time period?

    Calendar_Date: Apr-2013
    Currentness_Reference: Publication date

  5. What is the general form of this data set?

    Geospatial_Data_Presentation_Form: Vector digital data

  6. How does the data set represent geographic features?

    1. How are geographic features stored in the data set?

      This is a Vector data set. It contains the following vector data types (SDTS terminology):

      • G-Polygon (447)

    2. What coordinate system is used to represent geographic features?

      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.000278. Longitudes are given to the nearest 0.000278. Latitude and longitude values are specified in Decimal degrees.

      The horizontal datum used is North American Datum of 1983.
      The ellipsoid used is GRS1980.
      The semi-major axis of the ellipsoid used is 6378137.
      The flattening of the ellipsoid used is 1/298.257222.

  7. How does the data set describe geographic features?

    Congressional district
    Legislatively defined subdivisions of a State for the purpose of electing representatives or delegates to the House of Representatives of the United States Congress. (Source: National Atlas of the United States)

    Shape
    The representation of the entity in the data. (Source: National Atlas of the United States)

    ValueDefinition
    Polygon2-dimensional element

    State
    The name of the State or State equivalent in which the Congressional district is located. (Source: National Atlas of the United States)

    Formal codeset
    Codeset Name:American National Standards Institute (ANSI) Codes for States, the District of Columbia, Puerto Rico, and the Insular Areas of the United States
    Codeset Source:U.S. Census Bureau

    State_fips
    The 2-digit FIPS code of the State or State equivalent. (Source: National Atlas of the United States)

    Formal codeset
    Codeset Name:American National Standards Institute (ANSI) Codes for States, the District of Columbia, Puerto Rico, and the Insular Areas of the United States
    Codeset Source:U.S. Census Bureau

    Cong_dist
    The 2-digit code of the Congressional district, identifying a district within a State. District numbers were taken from the source data; single-district States are given the number 01. (Source: National Atlas of the United States)

    ValueDefinition
    00The area is a district or territory which has a non-voting member in the House of Representatives.

    Range of values
    Minimum:01
    Maximum:53

    Cong_rep
    The name of the Congressional representative for the district. (Source: National Atlas of the United States)

    ValueDefinition
    VACANTThere is currently no representative for the district.

    There is no predefined set of valid Representatives' names.

    Party_aff
    The party affiliation of the Congressional representative for the district. (Source: National Atlas of the United States)

    ValueDefinition
    DemocratThe representative is affiliated with the Democratic party.
    RepublicanThe representative is affiliated with the Republican party.
    VacantThere is currently no representative for the district.

    Url
    The Uniform Resource Locator (URL) of the Congressional representative's Web site. (Source: National Atlas of the United States)

    ValueDefinition
    <blank>There is currently no representative for the district.

    There is no predefined set of valid URLs.

    Senator_1
    The name of one of the Senators representing the State in which the congressional district falls. (Source: National Atlas of the United States)

    ValueDefinition
    N/AThe area does not have a Senator. The District of Columbia, Puerto Rico, and the U.S. Virgin Islands have non-voting congressional representatives but do not have senators.

    There is no predefined set of valid Senators' names.

    Sen1_party
    The party affiliation of the senator. (Source: National Atlas of the United States)

    ValueDefinition
    DemocratThe senator is affiliated with the Democratic party.
    RepublicanThe senator is affiliated with the Republican party.
    N/AThe area does not have a senator.

    Sen_1_url
    The Uniform Resource Locator (URL) of the senator's Web site. (Source: National Atlas of the United States)

    ValueDefinition
    N/AThe area does not have a senator.

    There is no predefined set of valid URLs.

    Senator_2
    The name of the second of the Senators representing the State in which the congressional district falls. (Source: National Atlas of the United States)

    ValueDefinition
    N/AThe area does not have a Senator. The District of Columbia, Puerto Rico, and the U.S. Virgin Islands have non-voting congressional representatives but do not have senators.

    There is no predefined set of valid Senators' names.

    Sen2_party
    The party affiliation of the senator. (Source: National Atlas of the United States)

    ValueDefinition
    DemocratThe senator is affiliated with the Democratic party.
    IndependentThe senator is not affiliated with either the Democratic or the Republican party.
    RepublicanThe senator is affiliated with the Republican party.
    N/AThe area does not have a senator.

    Sen_2_url
    The Uniform Resource Locator (URL) of the senator's Web site. (Source: National Atlas of the United States)

    ValueDefinition
    N/AThe area does not have a senator.

    There is no predefined set of valid URLs.


Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)

    • National Atlas of the United States

  2. Who also contributed to the data set?

  3. To whom should users address questions about the data?

    National Atlas of the United States
    U.S. Geological Survey
    Reston, VA 20192

    1-888-ASK-USGS (1-888-275-8747) (voice)
    atlasmail@usgs.gov

    Contact_Instructions:
    For questions about this map layer or metadata, please contact the National Atlas using the information above, or through the U.S. Geological Survey contact page at <http://www.usgs.gov/ask/>. For distribution questions, please see the Distribution Information elsewhere in this metadata.


Why was the data set created?

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.


How was the data set created?

  1. From what previous works were the data drawn?

    State district data (source 1 of 7)
    Various, Unknown, State information on Congressional districts - see links below.

    Other_Citation_Details:
    For States containing more than one Congressional District, information was obtained from the States wherever possible. The sources used for each State are listed below. States having only one congressional district are not included in this list.
    Alabama, Legislative Reapportionment Office:
      <http://www.legislature.state.al.us/reapportionment/reap.html>
    Arizona, Arizona Independent Redistricting Commission:
      <http://azredistricting.org/Maps/Tentative-Final-Maps/default.asp>
    Arkansas, GeoStor:
      <http://www.geostor.arkansas.gov/G6/Home.html?id=2cd98b30e1fb854b8b5a2c679276ff2d>
    California, California Citizens Redistricting Commission:
      <http://wedrawthelines.ca.gov/maps-final-draft-congressional-districts.html>
    Colorado, Proposed Congressional Maps:
      <http://go.usa.gov/TCUd>
    Connecticut, Connecticut General Assembly, Redistricting Project:
      <http://www.cga.ct.gov/red2011/maps.asp>
    Florida, The Florida Senate, Congressional Redistricting Plan:
      <http://www.flsenate.gov/Session/Redistricting/Plan/h000c9047>
    Georgia, Georgia General Assembly, Legislative and Congressional Reapportionment Office:
      <http://www.legis.ga.gov/Joint/reapportionment/en-US/default.aspx>
    Hawaii, Office of Elections, 2010 Census Redistricting Data for Hawaii:
      <http://hawaii.gov/elections/reapportionment/2011/maps/2010censusdata/>
    Idaho, Idaho Legislature, Adopted Redistricting Plans:
      <http://legislature.idaho.gov/redistricting/adopted_plans.htm>
    Illinois, Illinois Redistricting, 2011 Adopted Maps:
      <http://www.ilhousedems.com/redistricting/?page_id=554>
    Indiana
      Shapefile received via email from David S. Nail, GISP USGS Geospatial Liaison
    Iowa, The Iowa Legislature, Iowa Redistricting - 2011:
      <https://www.legis.iowa.gov/Resources/Redist/redistricting.aspx>
    Kansas, Kansas Legislative Research Dept., Kansas Redistricting 2012:
      <http://redistricting.ks.gov/_Plans/plans_current.html>
    Kentucky, Kentucky Legislature, GIS Data:
      <http://www.lrc.ky.gov/gis/gis_data.htm>
    Louisiana, Louisiana House of Representatives:
      <http://house.louisiana.gov/h_redistricting2011/default_Shapefiles.htm>
    Maine, Maine Geolibrary Geoportal:
      <http://geolibportal.usm.maine.edu/geonetwork/srv/en/main.home>
    Maryland, Department of Planning, Redistricting, Congressional and Legislative Districts:
      <http://www.mdp.state.md.us/redistricting/2010/dataDownload.shtml>
    Massachusetts, the 188th General Court of the Commonwealth of Massachusetts, New District
      Maps:
      <http://www.malegislature.gov/district/proposeddistrictmaps>
    Michigan, Michigan Department of Technology, Management and Budget:
      <http://www.mcgi.state.mi.us/mgdl/?action=thm>
    Minnesota, Legislative Coordinating Commission:
      <http://www.gis.leg.mn/redist2010/cong10.php?name=C2012&pltype=court>
    Mississippi, Mississippi Automated Resource Information System:
      <http://www.maris.state.ms.us/HTM/DownloadData/MS2010Redistricting.html>
    Missouri, Office of Administration, Division of Budget & Planning:
      <http://oa.mo.gov/bp/redistricting/newcongdistricts.htm>
    Nebraska, Nebraska Legislature, Congress - Maps Clearinghouse:
      <http://www.nebraskalegislature.gov/about/congress_map.php>
    Nevada, Nevada Legislature, Nevada Reapportionment and Redistricting 2011:
      <http://www.leg.state.nv.us/division/research/districts/reapp/2011/FinalPlans.cfm?>
    New Hampshire, NH Granit, New Hampshire Congressional District Boundaries - 2012:
      <http://www.granit.unh.edu/data/downloadfreedata/category/databycategory.html>
    New Jersey, New Jersey Redistricting Commission:
      <http://njredistrictingcommission.org/documents/shapefiles/NJCD_2011_SHAPE_FILE.zip>
    New Mexico, New Mexico Legislature:
      <http://www.nmlegis.gov/lcs/redcensus/red_datamaps.aspx?ID202=187963.2>
    New York, The New York State Legislative Task Force on Demographic Research and
      Reapportionment:
      <http://www.latfor.state.ny.us/maps/?sec=2012c>
    North Carolina, North Carolina General Assembly:
      <http://www.ncleg.net/representation/Content/BaseData/BD2011.aspx>
    Ohio, Ohio Secretary of State, Elections and Voting, District Maps:
      <http://www.sos.state.oh.us/SOS/elections/candidates/District%20Maps.aspx>
    Oklahoma
      Shapefile received via email from Darryl Williams, USGS State liaison
    Oregon, Oregon State Legislature, State of Oregon Redistricting Information:
      <http://www.leg.state.or.us/redistricting/>
    Pennsylvania, Pennsylvania Redistricting, District Maps:
      <http://www.redistricting.state.pa.us/Maps/index.cfm>
    Rhode Island, ESRI, ArcGIS Resources:
      <http://blogs.esri.com/esri/arcgis/2013/01/09/usa-113th-congressional-districts-now-available/>
    South Carolina, SC Budget and Control Board, Office of Research and Statistics:
      <http://ors.sc.gov/digital/gisdata.html>
    Tennessee, TNMap:
      <http://tnmap.state.tn.us/portal2/download.asp>
    Texas
      Shapefile received via email from Claire DeVaughan, Geospatial Liaison for Texas,
      U.S. Geological Survey
    Utah, Utah Lieutenant Governor, Elections:
      <http://elections.utah.gov/map/district-maps>
    Virginia, Division of Legislative Services, Redistricting 2010:
      <http://redistricting.dls.virginia.gov/2010/RedistrictingPlans.aspx#31>
    Washington, Washington State Redistricting Commission:
      <http://www.redistricting.wa.gov/maps.asp>
    West Virginia, West Virginia GID Technical Center:
      <http://wvgis.wvu.edu/data/dataset.php?ID=137>
    Wisconsin, Wisconsin State Legislature, Legislative Redistricting:
      <http://legis.wisconsin.gov/ltsb/redistricting/census2010.htm>
    
    Type_of_Source_Media: Various
    Source_Contribution: Spatial and attribute information

    States (source 2 of 7)
    National Atlas of the United States, 201304, 1:1,000,000-Scale State Boundaries of the United States: National Atlas of the United States, Rolla, MO.

    Online Links:

    Type_of_Source_Media: Online
    Source_Contribution: Spatial information

    Counties (source 3 of 7)
    National Atlas of the United States, 201304, 1:1,000,000-Scale County Boundaries of the United States: National Atlas of the United States, Rolla, MO.

    Online Links:

    Type_of_Source_Media: Online
    Source_Contribution: Spatial information

    Roads (source 4 of 7)
    National Atlas of the United States, 201304, 1:1,000,000-Scale Roads of the United States: National Atlas of the United States, Rolla, MO.

    Online Links:

    Type_of_Source_Media: Online
    Source_Contribution: Spatial information

    Streams (source 5 of 7)
    National Atlas of the United States, 201304, 1:1,000,000-Scale Streams of the United States: National Atlas of the United States, Rolla, MO.

    Online Links:

    Type_of_Source_Media: Online
    Source_Contribution: Spatial information

    Senate (source 6 of 7)
    Senate, United States , 2013, Senators of the 113th Congress: United States Senate, Washington, DC.

    Online Links:

    Type_of_Source_Media: Online
    Source_Contribution: Attribute information

    House (source 7 of 7)
    United States House of Representatives, 2013, Directory of Representatives: United States House of Representatives, Washington, DC.

    Online Links:

    Type_of_Source_Media: Online
    Source_Contribution: Attribute information

  2. How were the data generated, processed, and modified?

    Date: Apr-2013 (process 1 of 1)
    Working one State at a time, the State district data were downloaded and added to a geodatabase that also contained the State and county boundaries, roads, and streams. The State district data were compared to the other data sets. Most State district data sets are more detailed than the 1:1,000,000-scale National Atlas data.
    Where a county contained only one congressional district, the county boundaries were copied into a geodatabase feature class called Final_districts; they were then attributed with the appropriate district number and State.
    Where a county included multiple congressional districts, the district boundaries were checked against the Counties, Roads, and Streams; if a district boundary followed the county boundary, a road, or a stream (within 300 meters), the linework was extracted from the applicable layer and copied into the Partial feature class. If a district boundary was more than 300 meters from an existing 1:1,000,000-scale feature, the boundary was generalized as appropriate for the data scale and added to the Partial feature class. Features were not moved more than 500 meters from their position as provided in the State district data. The resulting polygons were copied into the Final_districts feature class and attributed with the district number and State.
    For States that only have one Congressional district, the State boundaries were extracted and added to the Final_districts feature class.
    Features were dissolved based on district number and state. Topology errors were corrected.
    Attribute information identifying representatives for each district was added from the Senate and House data sources.
    The map layer was saved in shapefile and in file geodatabase formats.

    Data sources used in this process:

    • State district data
    • States
    • Counties
    • Roads
    • Streams
    • Senate
    • House

  3. What similar or related data should the user be aware of?


How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?

  2. How accurate are the geographic locations?

  3. How accurate are the heights or depths?

  4. Where are the gaps in the data? What is missing?

    This map layer includes Congressional districts for the United States, Puerto Rico, and the U.S. Virgin Islands.

  5. How consistent are the relationships among the observations, including topology?

    The map layer was checked for topological consistency using ArcGIS. No other checks for logical consistency were performed on this map layer.


How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

Access_Constraints: None
Use_Constraints:
None. Acknowledgment of The National Atlas of the United States of America would be appreciated in products derived from these data.

  1. Who distributes the data set? (Distributor 1 of 1)

    Earth Explorer, U.S. Geological Survey
    U.S. Geological Survey
    Sioux Falls, SD 57198-0001

    605-594-6116 (voice)
    custserv@usgs.gov

  2. What's the catalog number I need to order this data set?

  3. What legal disclaimers am I supposed to read?

    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.

  4. How can I download or order the data?


Who wrote the metadata?

Dates:
Last modified: 17-Apr-2013
Metadata author:
National Atlas of the United States
U.S. Geological Survey
Reston, VA 20192

1-888-ASK-USGS (1-888-275-8747) (voice)
atlasmail@usgs.gov

Metadata standard:
FGDC Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)



 


Generated by mp version 2.9.14 on Wed Apr 17 17:40:52 2013