Illinois Valley Times

36.6 percent of people 25 years or older had an associate's degree or higher in Mark in 2020, according to data obtained from the U.S. Census Bureau.

This was 7.1 percent lower than the state average of 43.7 percent. In 2020 the total municipality population reached 534.

96 percent of the population had at least a high school diploma or the equivalent.

Degree	Number of people	Percentage of population
No degree	16	4
Regular high school diploma	122	30.6
GED or alternative credential	18	4.5
Some college, less than 1 year	26	6.5
Some college, 1 or more years, no degree	71	17.8
Associate's degree	68	17
Bachelor's degree	61	15.3
Master's degree	11	2.8
Professional school degree	2	0.5
Doctorate degree	4	1

*All data is for residents who were at least 25 years old in 2020.