The famous person Eli Slifer is associated with one of more of the Union County historic places.
Some of the country's most noteable architects helped create the Union County places including Civilian Conservation Corps, Joseph Boop, Groton Bridge & Manufacturing Co., George W. Rockwell, Lewis Palmer, James B. Long, Samuel Sloan, Benjamin Griffey and Ackerman & Partridge. Prominent architectural styles found in Union Country are Late Victorian, Greek Revival and Italianate.