 clayton is a town in johnston county, north carolina, and considered a satellite town of raleigh. a very small portion of the town extends into wake county. as of 2010, clayton's population was 16,116 people. much of that growth can be attributed to the town's close proximity to the research triangle area and access to major highways such as i-40, u.s. 70, and nc 42. 
Populated_places_established_in_1866 Towns_in_Johnston_County,_North_Carolina Towns_in_North_Carolina Towns_in_Wake_County,_North_Carolina