Several famous people are associated with these Hancock County historic places including John D. Rockefeller, John D. Rockefeller Jr. and William A.M. Burden.
Some of the country's most noteable architects helped create the Hancock County places including Edward Larrabee Barnes, US Army Corps of Engineers, Robert W. Patterson, Beatrix Farrand, Alexander Parris, James L. Leonard, Civilian Conservation Corps, Grosvenor Atterbury, Walter K. Harrison and Robert Day Andrews. Prominent architectural styles found in Hancock Country are Federal, Greek Revival and Colonial Revival.