Carlinville is a city located in Macoupin County Illinois. Carlinville has a 2020 population of 6,053. It is also the county seat of Macoupin County. Carlinville is currently declining at a rate of -1.09% annually and its population has decreased by -9.24% since the most recent census, which recorded a population of 6,669 in 2010. Carlinville reached it's highest population of 6,669 in 2010.
The average household income in Carlinville is $67,645 with a poverty rate of 20.46%. The median rental costs in recent years comes to $796 per month, and the median house value is $101,300. The median age in Carlinville is 36.4 years, 34.7 years for males, and 36.9 years for females.