sentences:  A July 1, 2009 estimate placed the population at 80,380.The metropolitan area delineations published by the Office of Management and Budget in February 2013 no longer include Clay County as a micropolitan statistical area and they no longer treat the two counties as a combined statistical area.As of the census of 2000, there were 83,565 people, 31,001 households, and 22,290 families residing within the CSA.