Fairfield is a city located in Washington. With a 2020 population of 622, it is the 227th largest city in Washington and the 12388th largest city in the United States. Fairfield is currently growing at a rate of 0.16% annually and its population has increased by 1.63% since the most recent census, which recorded a population of 612 in 2010. Spanning over 1 miles, Fairfield has a population density of 1,010 people per square mile.
The average household income in Fairfield is $68,075 with a poverty rate of 10.42%. The median rental costs in recent years comes to $1,063 per month, and the median house value is $155,100. The median age in Fairfield is 43.6 years, 44.9 years for males, and 38.2 years for females. For every 100 females there are 116.4 males.