A county is the largest geographic division of local government. According to the National association of Counties,
Traditionally, counties performed state-mandated duties, which included assessment of property, record keeping (e.g., property and vital statistics), maintenance of rural roads, administration of election and judicial functions, and poor relief. Today, counties rapidly are moving into other areas, undertaking programs relating to child welfare, consumer protection, economic development, employment/training, planning and zoning, and water quality, to name just a few.
Service delivery responsibilities, however, vary widely among counties. For most, construction/maintaining local roads is one of their prime duties. North Carolina counties, however, have no responsibilities in this area. Wide variations also exist in the social service responsibilities and the types of utility services (e.g., water supply) provided by county governments.
There are many reasons for wanting to determine the county of a particular address, including:
Our API can do that for you! We standardize the address and check it against USPS data to determine the official county to which the address is assigned. Check it out here.