* An update for this table was not available in the 2015 Edition released in December 2015. It will be updated once new data is released.

Years Available: 1970, 1980, 1993, 2003, 2013

Permanent Link: http://data.sagepub.com/sagestats/7046

General Notes: **Counties with a "1" are designated as a metro area. Counties marked with a "0" are designated as a nonmetro area. For 2013 metro areas include all counties containing one or more urbanized areas: high-density urban areas containing 50,000 people or more; metro areas also include outlying counties that are economically tied to the central counties, as measured by the share of workers commuting on a daily basis to the central counties. Nonmetro counties are outside the boundaries of metro areas and have no cities with 50,000 residents or more. For year 2004 data metro and nonmetro area definitions are based on the 2003 Metro Classification System. See documentation for more information: http://webarchives.cdlib.org/sw1wp9v27r/http:/ers.usda.gov/Briefing/Rurality/RuralUrbCon/ 1993 data uses the 1993 Rural-urban Continuum Codes. For more details see documentation: http://webarchives.cdlib.org/sw1wp9v27r/http:/www.ers.usda.gov/Briefing/Rurality/RuralUrbCon/priordescription.htm 1983 data uses the 1983 Rural-urban Continuum Codes. For more details see documentation: http://www.ers.usda.gov/data-products/rural-urban-continuum-codes.aspx 1974 data uses the 1974 Rural-urban Continuum Codes. For more details see documentation: http://www.ers.usda.gov/data-products/rural-urban-continuum-codes.aspx