This repository includes a few convenience lookup tables for working with census data at the level of the state and the county.

1. A lookup for state name, state abbreviation, and state FIPS code. https://www.nrcs.usda.gov/wps/portal/nrcs/detail/?cid=nrcs143_013696
2. A county-level look-up containing the county's FIPS code, its corresponding Core-Based Statistical Areas, and its 2013 NCHS urban-rural classification: https://www.cdc.gov/nchs/data_access/urban_rural.htm
3. A look-up table for a state's corresponding Census Bureau-designated region (n=4) and division (n=9): https://en.wikipedia.org/wiki/List_of_regions_of_the_United_States#Census_Bureau-designated_regions_and_divisions