On July 29, 1847, a group of Mormon pioneers (members of the Church of Jesus Christ of Latter-day Saints) known as the Mississippi Company, among them John Holladay of Alabama, entered the Salt Lake Valley.

He is a cousin to Ben Holladay, The Stagecoach King, who traded with the LDS and ran his Denver-San Francisco stage line through Salt Lake.

A year before the first LDS migration, in the spring of 1846, he departed west with his extended family joining other converts that made up the Mississippi Company led by John Brown.

They had been led to expect to meet the main party on the trail but after going as far as Laramie without a sign of them they went south and wintered at Pueblo, Colorado where they were later joined by the Mormon Battalion sick detachments.

Lunt, Sandy Thackeray, Steven Peterson, Jim Palmer, Grant Orton, Daniel Bay Gibbons, Jeffrey Fishman, Hugo Diederich, Lynn Pace and Patricia Pignanelli.

Known for its fine old homes, heavily wooded lots, the controlling of commercial development and the preservation of open space have been the chief political issues in Holladay's recent history.

The racial makeup of the county was 89.4% non-Hispanic White, 1.4% Black, 0.1% Native American, 2.0% Asian, 0.2% Pacific Islander, and 1.4% from two or more races.