Fairfield is a city located in Camas County Idaho. It is also the county seat of Camas County. With a 2020 population of 375, it is the 144th largest city in Idaho and the 14499th largest city in the United States . Fairfield is currently declining at a rate of -2.60% annually and its population has decreased by -9.86% since the most recent census, which recorded a population of 416 in 2010. Fairfield reached it's highest population of 416 in 2010. Spanning over 1 miles, Fairfield has a population density of 428 people per square mile.
The average household income in Fairfield is $69,720 with a poverty rate of 23.31%. The median rental costs in recent years comes to $921 per month, and the median house value is $113,900. The median age in Fairfield is 33.6 years, 27.9 years for males, and 34.3 years for females.