The Town of Fairfield had a population of 123 as of July 1, 2015. Fairfield ranks in the lower quartile for Population Density when compared to the other cities, towns and Census Designated Places (CDPs) in Utah.

The primary coordinate point for Fairfield is located at latitude 40.236 and longitude -112.0752 in Utah County. The formal boundaries for the Town of Fairfield (see map below) encompass a land area of 26.71 sq. miles and a water area of 0.03 sq. miles. Utah County is in the Mountain time zone (GMT -7). The elevation is 4,879 feet.

The Town of Fairfield (GNIS ID: 2412611) has a C1 Census Class Code which indicates an active incorporated place that does not serve as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

Alternate Unofficial Names for Fairfield: Camp Floyd, Fort Crittenden.

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