There is more than one place called Clayton: Australia Clayton (Victoria) - a suburb of Melbourne. United States of America Clayton (Alabama) - a town in Alabama. Clayton (California) - a town in California. Clayton (Indiana) - a town in Indiana. Clayton (Georgia) - a town in Georgia (state). Clayton (Missouri) - a town in Missouri. Clayton (New Mexico) - a town in New Mexico. Clayton (New York) - a town in northern New York. See Thousand Islands. Clayton (North Carolina) - a town in North Carolina.