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RUCA codes are a census tract-based classification that uses standard census measures of population density, levels of urbanization and journey-to-work commuting to characterize all U.S. census tracts with respect to their rural/urban status and commuting relationships to other census tracts.

The rural-urban commuting area (RUCA) codes classify U.S. census tracts using measures of population density, urbanization, and daily commuting.

If you want to geocode U.S. ZIP Code data, you can use the US Address 5-Digit ZIP address locator style for creating a ZIP Code address locator based on a ZIP Code point reference feature class. The address locator is the main tool for geocoding in ArcGIS.

Each ZIP Code is classified as predominately Rural, Urban, or Suburban based on three key factors: population density (people per square mile), distance from nearest city, and size of the nearest city (suburban areas for larger cities extend greater distances).

Any area that is not urban is rural. The Census defines urban as: Urbanized Areas (UAs) of 50,000 or more people. Urban Clusters (UCs) of 2,500 - 49,999 people.

There are three main parts of the 5-digit ZIP Codethe national area, the region or city, and the delivery area. The United States Postal Service (USPS) has segmented the country into 10 ZIP Code areas.

Description. U.S. ZIP Code Areas - Three-Digit provides ZIP Code (three-digit), population, and area for the three-digit ZIP Code areas in the United States. U.S. ZIP Code Areas - Three-Digit represents the first three digits of a ZIP Code.

Follow the steps below to shorten to five digits: Insert a new column to the right of your current zip code column. Type or copy and paste =LEFT(C2,5) , replacing C2 with your cell's identifier. Drag the formula down the rest of your column.

ZIP Codes are numbered with the first digit representing a certain group of U.S. states, the second and third digits together representing a region in that group (or perhaps a large city) and the fourth and fifth digits representing a group of delivery addresses within that region.

Starting in 1910, the current population threshold of 2,500 or more was adopted to define urban as any population, housing, or territory in an incorporated place. All other areas outside of incorporated places were considered rural.