City Territory inside an urbanized area and inside a principal city. Territory inside an urbanized area and inside a principal city. uri://ed-fi.org/FederalLocaleCodeDescriptor Rural Census-defined rural territory. Census-defined rural territory. uri://ed-fi.org/FederalLocaleCodeDescriptor Suburb Territory outside a principal city and inside an urbanized area. Territory outside a principal city and inside an urbanized area. uri://ed-fi.org/FederalLocaleCodeDescriptor Town Territory inside an urban cluster. Territory inside an urban cluster. uri://ed-fi.org/FederalLocaleCodeDescriptor