Altamont is a city located in Effingham County Illinois. With a 2020 population of 2,435, it is the 448th largest city in Illinois and the 6912th largest city in the United States . Altamont is currently growing at a rate of 2.01% annually and its population has increased by 5.00% since the most recent census, which recorded a population of 2,319 in 2010. Altamont reached it's highest population of in . Spanning over 1 miles, Altamont has a population density of 1,719 people per square mile.
The average household income in Altamont is $55,488 with a poverty rate of 9.34%. The median rental costs in recent years comes to $748 per month, and the median house value is $98,600. The median age in Altamont is 39.8 years, 35 years for males, and 51 years for females.