Fairbury is a city located in Livingston County Illinois. With a 2020 population of 3,604, it is the 389th largest city in Illinois and the 5697th largest city in the United States . Fairbury is currently declining at a rate of -0.25% annually and its population has decreased by -4.07% since the most recent census, which recorded a population of 3,757 in 2010. Fairbury reached it's highest population of 3,968 in 2000. Spanning over 2 miles, Fairbury has a population density of 2,014 people per square mile.
The average household income in Fairbury is $65,557 with a poverty rate of 12.90%. The median rental costs in recent years comes to $698 per month, and the median house value is $105,600. The median age in Fairbury is 41.2 years, 40.1 years for males, and 44.8 years for females.