The 15 counties in Arizona are basic subdivisions of the state, with elected officials providing local accountability of state mandated functions. The basic principles of these municipal governments are found in Article 12 of the Arizona Constitution.
Current laws regarding Arizona counties are available from Title 11 of the Arizona Revised Statutes. More and more, counties are providing needed municipal-type services and addressing problems common to their geographic area.
For an excellent introduction to understanding local government in Arizona, Arizona Local Government located in Government Documents, is highly recommended.
For frequently requested data items from various Census Bureau programs for Arizona Counties, view Census Quick Facts.
For a detailed overall look at local governments in the United States, please refer to the Census of Governments.
Link to the official county web site by name (view more detailed information from the Arizona County drop down menu above). Browse the official county publications held in our collection via the corresponding Local Arizona Document Call Number link. All Arizona counties are actively collected by Government Documents Service; older publications are available in print on Level 3 of the Hayden Library, while recent publications may be linked electronically from our catalog.
Arizona Association of Counties - XGAC - The Arizona Association of Counties (AACo) is the only state organization that represents all county officials and the governments they serve in the State of Arizona. Founded in 1968, AACo provides essential services to the state's counties. AACo advances issues with the state and federal government, improves the public understanding of county government, assists counties in finding and sharing innovative solutions through education and research and provides value-added services to save counties and taxpayers money.