 Marriott-Slaterville City was originally settled by several Mormon pioneer families, in 1852, including the Richard Slater family, and the Perry, Smout, Marriott and Field families.Many living descendants of these families, including relatives of J. Willard Marriott, pioneer hotelier of the 20th century and founder of Marriott International, still reside within Marriott-Slaterville.As of the census of 2000, there were 1,425 people, 458 households, and 381 families residing in the city.