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Arizona Gazetteer

Arizona - Basic Information

Became a State: February 14, 1912 - 48th State
Population: 6,392,017 (2010 Census) - Ranks 16th
Land Area: 113,594.1 square miles - Ranks 6th
Population Density: 56.3 persons per square mile - Ranks 33rd
Housing Units: 2,844,526 (2010 Census)
Housing Unit Density: 25.0 housing units per square mile
July 1, 2017 Estimates: Arizona Data and Demographics
State Capital: Phoenix
State Website: Official State of Arizona Website
Arizona State Flag
Arizona state flag

Arizona History

Arizona State Flower
Arizona State Flower - Saguaro Cactus Blossom

The United States acquired most of the area of Arizona from Mexico in 1848. The United States acquired additional area, comprising the southern part of Arizona, from Mexico in 1853 as part of the Gadsden Purchase. Arizona Territory was organized from the western part of New Mexico Territory on February 24, 1863. Part of Arizona Territory north and west of the Colorado River was added to the state of Nevada in 1866, resulting in generally the same boundary as the present state of Arizona.

Although the territory had not yet been legally established, census data are available for Arizona beginning with the 1860 census. For an explanation of the revision to the 1860 population of Arizona, see Richard L. Forstall, Population of States and Counties of the United States: 1790-1990, Washington, DC: U.S. Government Printing Office, 1996, page 14.

Data for the legally established state of Arizona are available beginning with the 1920 census.

Arizona Geographical Areas

See: Geographic Terms & Concepts

Counties & County Equivalents

Interactive Map of Arizona Counties | Static Overview Map of Arizona Counties

There are 15 counties in Arizona.  Each county is governed by a board of supervisors.

County Subdivisions

There are 80 county subdivisions in Arizona.  They are all census county divisions (CCDs), which are delineated for statistical purposes, have no legal function, and are not governmental units.

Places (Incorporated Cities, Towns & Census Designated Places (CDPs))

Arizona State Bird
Arizona State Bird - Cactus Wren

Arizona has 451 places; 90 incorporated places and 361 census designated places (CDPs).  The incorporated places consist of 45 cities and 45 towns.  The minimum population threshold required for incorporation is 1,500. 

Alphabetical List of Cities, Towns, CDPs and Other Populated Places
A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q, R | S | T | U, V | W, X, Y, Z

Neighborhood Data

Address Based Hyperlocal Data Input an address and get data & demographics for the pertinent census block group (CBG), a searchable map and a customized directory. The CBG is the smallest geographical unit used by the Census Bureau for reporting certain data.

Arizona Civil Features

Arizona Civil Features: Political Subdivisions, Native Areas, Land Grants, etc. - sorted by Census Class Codes.

Metropolitan and Micropolitan Statistical Areas

There are 7 Metropolitan and 4 Micropolitan Statistical Areas in Arizona. AZ Metopolitan & Micropolitan Areas

Arizona ZIP Code Tabulation Areas

There are 408 ZIP Code tabulation areas (ZCTAs) in Arizona. View Arizona ZIP Codes and ZIP Code Maps.

School Districts

Arizona has 104 elementary school districts, 15 secondary school districts, and 99 unified school districts. View Arizona Public and Private Schools.

Congressional Districts

Arizona has 9 congressional districts. An interactive map shows the contact information for each Representative as well as the boundaries for each Arizona district. View Map of Arizona Congressional Districts.

State Legislative Districts

There are 30 state senate districts and 30 state house districts in Arizona.

American Indian Areas

Arizona has 21 federally recognized American Indian reservations; 4 with associated off-reservation trust lands in the state.

Arizona Physical, Cultural and Historic Features

  1. Arizona Physical Features such as lakes, islands, streams, valleys, summits, etc.
  2. Arizona Cultural Features such as schools, churches, hospitals, parks, dams, reservoirs, etc.
  3. Arizona Historical Features and Arizona Historic Landmarks

Arizona Maps

  • To find a ZIP Code: input the address in the top-left search box of any ZIP Code Map.
  • To find the County: input the address in the top-left search box of the interactive AZ map.
  • To find the School Attendance Zone: input the address in the top-left search box of any AZ school map

Arizona Research Tools

Arizona Census Data Comparison Tool

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Puerto Rico’s Forgotten Island Vieques Needs Help

Puerto Rico’s Forgotten Island Vieques Needs Help

In the very early morning hours of September 20, 2017, the eyewall of Hurricane Maria passed over the tiny island of Vieques, Puerto Rico as a Category 5 hurricane, before moving westwards to mainland Puerto Rico. Maria ravaged the 60-square mile island with sustained winds of over 150 MPH and storm surges of over 12 feet, destroying homes, local businesses and causing widespread devastation.

Learn how you can help now!

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