Prehistoric cultural affiliation(s) include Nez Perce, Windust Phase, Cascade Phase, Nimipu Phase, Native American, Tucannon Phase, Chinese and Et Al. dating back to 10999 BC.
The famous person Henry C. Kettenbach is associated with one of more of the Nez Perce County historic places.
Some of the country's most noteable architects helped create the Nez Perce County places including Kirtland K. Cutter, James H. Nave, Ralph Loring, Taymond W. Hatch, Hirsch & Watson Helfensteller, Dubray Bros., James Nave, Tourtellotte & Hummel, J.H. Nave and C.B. Chaffee. Prominent architectural styles found in Nez Perce Country are Colonial Revival, Romanesque and Queen Anne.