St. Johns is a city located in Illinois. With a 2020 population of 151, it is the 1223rd largest city in Illinois and the 25336th largest city in the United States. St. Johns is currently declining at a rate of -3.82% annually and its population has decreased by -7.36% since the most recent census, which recorded a population of 163 in 2020. Spanning over 1 miles, St. Johns has a population density of 208 people per square mile.
The average household income in St. Johns is $45,485 with a poverty rate of 13.75%. The median rental costs in recent years comes to $575 per month, and the median house value is $68,800. The median age in St. Johns is 50.5 years, 50.3 years for males, and 53.3 years for females.
According to the most recent ACS, the racial composition of St. Johnswas:
Rate of Home Ownership
Average Family Size
Average Household Size
The highest rate of high school graduation is among black people with a rate of 100.00%.
The highest rate of bachelors degrees is among white people with a rate of 10.16%.
96.82% of St. Johns residents speak only English, while 3.18% speak other languages. The non-English language spoken by the largest group is Other Indo-European, which is spoken by 3.18% of the population.
Overall Poverty Rate
Male Poverty Rate
Female Poverty Rate
The race most likely to be in poverty in St. Johns is White, with 14.67% below the poverty level.
The race least likely to be in poverty in St. Johns is Other, with NaN% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 2.00%. Among those working part-time, it was 6.45%, and for those that did not work, the poverty rate was 19.40%.
Number of Veterans
Veteran Poverty Rate
Veteran Disability Rate
Labor Force Participation
Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.
Born in St. Johns
100.00% of St. Johns residents were born in the United States, with 81.25% having been born in Illinois. 0.00% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Europe.