Description: Block Groups (BGs) are clusters of blocks within the same census tract. Each census tract contains at least one BG, and BGs are uniquely numbered within census tracts. BGs have a valid code range of 0 through 9. BGs have the same first digit of their 4-digit census block number from the same decennial census. For example, tabulation blocks numbered 3001, 3002, 3003,.., 3999 within census tract 1210.02 are also within BG 3 within that census tract. BGs coded 0 are intended to only include water area, no land area, and they are generally in territorial seas, coastal water, and Great Lakes water areas. Block groups generally contain between 600 and 3,000 people. A BG usually covers a contiguous area but never crosses county or census tract boundaries. They may, however, cross the boundaries of other geographic entities like county subdivisions, places, urban areas, voting districts, congressional districts, and American Indian / Alaska Native / Native Hawaiian areas. The BG boundaries in this release are those that were delineated as part of the Census Bureau's Participant Statistical Areas Program (PSAP) for the 2010 Census.Selected American Community Survey (ACS) 5-year estimate data has been added to these Block Groups for analysis.
Service Item Id: b52faf1d8f414a4a85772203ecda35a1
Copyright Text: Maricopa Association of Governments (MAG) and the MAG member agencies
Description: The Places file include both incorporated places (legal entities) and census designated places or CDPs (statistical entities). An incorporated place is established to provide governmental functions for a concentration of people as opposed to a minor civil division (MCD), which generally is created to provide services or administer an area without regard, necessarily, to population. Places always nest within a State, but may extend across county and county subdivision boundaries. An incorporated place usually is a city, town, village, or borough, but can have other legal descriptions. Census Designated Places CDPs are delineated for the decennial census as the statistical counterparts of incorporated places. CDPs are delineated to provide data for settled concentrations of population that are identifiable by name, but are not legally incorporated under the laws of the State in which they are located. The boundaries for CDPs often are defined in partnership with State, local, and/or tribal officials and usually coincide with visible features or the boundary of an adjacent incorporated place or another legal entity. CDP boundaries often change from one decennial census to the next with changes in the settlement pattern and development; a CDP with the same name as in an earlier census does not necessarily have the same boundary. The only population/housing size requirement for CDPs for the 2010 Census is that they must contain some housing and population. The boundaries of all 2010 Census incorporated places are as of January 1, 2010 as reported through the Census Bureau's Boundary and Annexation Survey (BAS). The boundaries of all 2010 Census CDPs were delineated as part of the Census Bureau's Participant Statistical Areas Program (PSAP).The American Indian / Alaska Native / Native Hawaiian (AIANNH) Areas includes the following legal entities: federally recognized American Indian reservations and off-reservation trust land areas, State-recognized American Indian reservations, and Hawaiian home lands (HHLs). The statistical entities included are Alaska Native village statistical areas (ANVSAs), Oklahoma tribal statistical areas (OTSAs), tribal designated statistical areas (TDSAs), and State designated tribal statistical areas (SDTSAs). Joint use areas are also included in this shapefile and mean that the area is administered jointly and/or claimed by two or more American Indian tribes. The Census Bureau designates both legal and statistical joint use areas as unique geographic entities for the purpose of presenting statistical data. Note that tribal subdivisions and Alaska Native Regional Corporations (ANRCs) are additional types of American Indian / Alaska Native areas stored by the Census Bureau, but are displayed in separate shapefiles because of how the fall within the Census Bureau's geographic hierarchy. The 2010 Census boundaries for federally recognized American Indian reservations and off-reservation trust lands are as of January 1, 2010, as reported by the federally recognized tribal governments through the Census Bureau's Boundary and Annexation Survey (BAS). The State of Hawaii's Office of Hawaiian Home Lands provided the legal boundaries used in Census 2000 for the HHLs, but provided no updates since and none for the 2010 Census although there is strong evidence of HHL land acquisitions and large housing and commercial development on most HHLs. The boundaries for ANVSAs, OTSAs, and TDSAs were delineated for the 2010 Census through the Tribal Statistical Areas Program (TSAP) by participants from the federally recognized tribal governments. The Bureau of Indian Affairs (BIA) within the U.S. Department of the Interior (DOI) provides the list of federally recognized Tribes and only provides legal boundary information when the Tribes need supporting records, if a boundary is based on treaty or another document that is historical or open to legal interpretation, or when another Tribal, State, or local government challenges the depiction of a reservation or off-reservation trust land. The boundaries for State recognized American Indian reservations and for SDTSAs were delineated State governor appointed liaisons for the 2010 Census through the State American Indian Reservation Program and TSAP respectively.Selected American Community Survey (ACS) 5-year estimate data has been added to Place Areas for analysis.
Service Item Id: b52faf1d8f414a4a85772203ecda35a1
Copyright Text: Maricopa Association of Governments (MAG) and the MAG member agencies
Description: 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 114th Congress is seated from January 2015 to 2017. The boundaries of all other congressional districts are provided to the Census Bureau through the Redistricting Data Program (RDP). The apportionment of seats in the House was based on the 2010 U.S. Census.Selected American Community Survey (ACS) 5-year estimate data has been added to these Congressional Districts for analysis.
Service Item Id: b52faf1d8f414a4a85772203ecda35a1
Copyright Text: Maricopa Association of Governments (MAG) and the MAG member agencies
Description: State Legislative Districts (SLDs) are the areas from which members are elected to State legislatures. The SLDs embody the upper (senate) and lower (house) chambers of the state legislature. A unique three-character census code, identified by State participants, is assigned to each SLD within a state. The boundaries of the 2014 State legislative districts were provided by state-level participants through the RDP and reflect the districts used to elect members in or prior to the November 2014 election.
Service Item Id: b52faf1d8f414a4a85772203ecda35a1
Copyright Text: Maricopa Association of Governments (MAG) and the MAG member agencies
Description: ZIP Code Tabulation Areas (ZCTAs) are generalized areal representations of United States Postal Service (USPS) ZIP Code service areas that the Census Bureau creates to present statistical data for each decennial census. The Census Bureau delineates ZCTA boundaries for the United States, Puerto Rico, American Samoa, Guam, the Commonwealth of the Northern Mariana Islands, and the U.S. Virgin Islands once each decade following the decennial census. Data users should not use ZCTAs to identify the official USPS ZIP Code for mail delivery. The USPS makes periodic changes to ZIP Codes to support more efficient mail delivery. The ZCTA boundaries in this release are those delineated following the 2010 Census.Selected American Community Survey (ACS) 5-year estimate data has been added to these ZIP Code Tabulation Areas for analysis.
Service Item Id: b52faf1d8f414a4a85772203ecda35a1
Copyright Text: Maricopa Association of Governments (MAG) and the MAG member agencies
Description: The primary legal divisions of most States are termed counties. The 2010 Census boundaries for counties and equivalent entities are as of January 1, 2010, primarily as reported through the Census Bureau's Boundary and Annexation Survey (BAS).Selected American Community Survey (ACS) 5-year estimate data has been added to these Counties for analysis.
Service Item Id: b52faf1d8f414a4a85772203ecda35a1
Copyright Text: Maricopa Association of Governments (MAG) and the MAG member agencies