Factors Data available period Scale Source Climate factors Annual temperature 2011 and 2012 Division National Climate Data Center (NCDC) Annual precipitation 2011 and 2012 Division NCDC Annual relative humidity 2011 and 2012 Station NCDC Geographic factors Elevation 2012 County http://www.cohp.org/ Percentage forest coverage 2007 County United States Department of Agriculture (USDA) Percentage surface water coverage 2010 County U.S. Census Bureau Societal factors Population density 2010 County U.S. Census Bureau Median household income 2011 County U.S. Census Bureau Mosquito species Aedes aegypti 2008 County Moore, CG. [15] Aedes albopictus 2012 County Hynes NA [16] Aedes canadensis 2004 County RF Darsie, Jr. and RA Ward [17] Aedes sierrensis 2004 County RF Darsie, Jr. and RA Ward Aedes trivittatus 2004 County RF Darsie, Jr. and RA Ward Anopheles punctipennis 2004 County RF Darsie, Jr. and RA Ward Anopheles quadrimaculatus 2004 County RF Darsie, Jr. and RA Ward Culex quinquefasciatus 2004 County RF Darsie, Jr. and RA Ward