Rexburg is a city located in Madison County Idaho. It is also the county seat of Madison County. With a 2020 population of 30,868, it is the 12th largest city in Idaho and the 1262nd largest city in the United States . Rexburg is currently growing at a rate of 2.44% annually and its population has increased by 21.13% since the most recent census, which recorded a population of 25,484 in 2010. Rexburg reached it's highest population of 30,868 in 2021. Spanning over 10 miles, Rexburg has a population density of 3,084 people per square mile.
The average household income in Rexburg is $46,244 with a poverty rate of 39.33%. The median rental costs in recent years comes to $717 per month, and the median house value is $211,700. The median age in Rexburg is 23.2 years, 23.8 years for males, and 22.3 years for females.