Rush is an unincorporated community in Boyd and Carter Counties in the U.S. state of Kentucky. As of the 2000 census, the community had a total population of 2,755 within its postal zip code. The Boyd County portion of Rush is a part of the Huntington-Ashland, WV-KY-OH, Metropolitan Statistical Area (MSA). As of the 2000 census, the MSA had a population of 288,649. The reason this community was given the name Rush is unknown. It is located along US 60 and also nearby I-64.