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CITY

St. Johns

Illinois · 158 residents (2025 est.) · 0.725 sq mi
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The short version

St. Johns has lower-than-average household income, with a median household income of $62,500. Population has fallen 16% since 2000, a loss of 34 residents. 19% of adults hold a bachelor's degree or higher, below the national rate of 36%. Median home value has risen by half since 2000, reaching $80,000. With a median age of 46.4, the population is older than the US median of 38.9. Households here earn about 25% less than the Illinois median.

At a glance
Lower income
below the US median
US median: $82,259
Older
median age 46.4
US median: 38.9
Less educated
19% hold a bachelor's degree
US average: 36%
More affordable
home values down 5%, inflation adjusted
US median home: $376,019
Section 01

Population & growth

Total population
184
−16%since 2000
from 218 in 2000
1990 – 2025
Population density
254 / sq mi
−16%since 2000
from 301 / sq mi in 2000
US average: 281
Median age
46.4
+15%since 2000
from 40.2 in 2000
US average: 38.9

PEP 2025 EST:158 residents (Census Bureau Vintage 2025, released March 2026)

Population, 1990 – 2024
1221591962322691990201020202024St. Johns
2024184
1990201020202024
Section 02

Income & economy

Median household income
$62,500
−3%inflation adjusted, since 2000
from $35,455 in 2000
US average: $82,259
1990 – 2024
Per capita income
$33,474
+112%since 2000
from $15,802 in 2000
US average: $44,673
Households earning $100K+
38.0%
+32.2 ptssince 2009
from 5.9% in 2009
US average: 53.3%
Poverty rate
14.4%
+3.0 ptssince 2000
from 11.4% in 2000
US average: 12.5%
Income inequality (Gini)
0.327
−43%since 2010
from 0.571 in 2010
US average: 0.476
Workforce by industry, 2024
Retail trade19.6%
US avg: 9.9%
Information7.1%
US avg: 10.8%
Transportation & warehousing3.6%
US avg: 2.2%
Wholesale trade2.7%
US avg: 6.9%
Other services2.7%
US avg: 6.7%
Public administration2.7%
US avg: 4.8%
Finance & insurance0.9%
US avg: 5.9%
Professional, scientific, technical0.9%
US avg: 5.1%
Arts, entertainment, food0.9%
US avg: 1.9%
Agriculture, forestry, fishing0%
US avg: 1.6%
Construction0%
US avg: 1.2%
Manufacturing0%
US avg: 0.4%
Education & health services0%
US avg: 0.9%
BARS: THIS PLACE · TICKS: US AVERAGE
Section 03

Housing

Median home value
$80,000
−5%inflation adjusted, since 2000
from $46,300 in 2000
US average: $376,019
1990 – 2024
Median gross rent
$720
+1%inflation adjusted, since 2000
from $390 in 2000
US average: $1,442
Owner-occupied
58.7%
−14.2 ptssince 2000
from 72.9% in 2000
41.3% rent
Vacancy rate
13.2%
+5.9 ptssince 2009
from 7.3% in 2009
US average: 10.0%
Owner cost-burdened
11.1%
−1.2 ptssince 2009
from 12.3% in 2009
US average: 22.9%
Renter cost-burdened
21.1%
+15.6 ptssince 2009
from 5.4% in 2009
US average: 47.4%
Afford Score
1.3
−2%since 2000
from 1.3 in 2000
1990 – 2024
Gentrification Score
62
RELATED:See current rent listings in St. Johns on RentDataNow
Section 04

Race & ethnicity

2000
White, non-Hispanic92.7%(202)
Black2.8%(6)
Hispanic / Latino0.5%(1)
Asian0.9%(2)
Other0%
Diversity Score10.3%(22)
2024
White, non-Hispanic76.1%(140)
Black0%(0)
Hispanic / Latino3.8%(7)
Asian9.2%(17)
Other10.9%(20)
Diversity Score49.9%(92)
Diversity Score
50
+384%since 2000
from 10 in 2000
1990 – 2024
Section 05

Education

Bachelor's degree or higher
18.9%
+9.0 ptssince 2000
from 9.9% in 2000
US average: 35.6%
High school or higher
93.7%
+13.5 ptssince 2000
from 80.2% in 2000
US average: 89.6%
Graduate degree
12.6%
+9.5 ptssince 2000
from 3.1% in 2000
US average: 14.0%
Section 06

Commute & transportation

Average commute
26.2 min
+19%since 2000
from 21.9 min in 2000
US average: 26.5
Drive alone to work
92.0%
−8.0 ptssince 2009
from 100.0% in 2009
US average: 68.9%
Carpooled to work
0.0%
Unchangedsince 2009
from 0.0% in 2009
US average: 8.5%
Public transit
1.8%
+1.8 ptssince 2009
from 0.0% in 2009
US average: 3.2%
Worked from home
0.0%
Unchangedsince 2009
from 0.0% in 2009
US average: 15.0%
Walked to work
1.8%
+1.8 ptssince 2009
from 0.0% in 2009
US average: 2.4%
Biked to work
1.8%
+1.8 ptssince 2009
from 0.0% in 2009
US average: 0.4%
No vehicle available
0.0%
−2.9 ptssince 2009
from 2.9% in 2009
US average: 8.3%
Section 07

Work & employment

Unemployment rate
4.3%
−21.0 ptssince 2011
from 25.3% in 2011
US average: 5.2%
Labor force participation
71.3%
+5.9 ptssince 2011
from 65.4% in 2011
US average: 63.5%
Self-employed
21.4%
−4.6 ptssince 2009
from 26.0% in 2009
US average: 13.1%
Management & professional
42.0%
−12.2 ptssince 2009
from 54.2% in 2009
US average: 42.5%
Section 08

People & community

Male
50.5%
−2.2 ptssince 2009
from 52.7% in 2009
Female
49.5%
+2.2 ptssince 2009
from 47.3% in 2009
Foreign born
4.9%
+4.9 ptssince 2009
from 0.0% in 2009
US average: 14.1%
Veterans
5.1%
−43.5 ptssince 2009
from 48.6% in 2009
US average: 6.2%
With a disability
22.3%
−4.5 ptssince 2012
from 26.8% in 2012
US average: 13.3%
Uninsured
10.3%
−71.5 ptssince 2013
from 81.8% in 2013
US average: 8.4%
Broadband at home
77.2%
+2.7 ptssince 2017
from 74.5% in 2017
US average: 91.0%
English only at home
100.0%
Unchangedsince 2016
from 100.0% in 2016
US average: 77.7%
Spanish at home
0.0%
Unchangedsince 2016
from 0.0% in 2016
US average: 13.6%
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Head to head

Compare St. Johns to nearby cities

ST. JOHNS VS
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Income$59,975−4%
Home value$113,300+42%
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ST. JOHNS VS
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Income$32,128−49%
Home value$127,900+60%
Population21,811+13704%
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ST. JOHNS VS
Mount Vernon
Income$55,357−11%
Home value$99,800+25%
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ST. JOHNS VS
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Income$56,912−9%
Home value$158,300+98%
Population17,148+10753%
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Frequently asked

How many people live in St. Johns, Illinois?

St. Johns, Illinois has about 184 residents according to the 2024 American Community Survey.

What is the median household income in St. Johns, Illinois?

The typical household in St. Johns, Illinois earns about $62,500 a year. Half of households make more than that, and half make less.

Is St. Johns, Illinois expensive?

In St. Johns, Illinois, the median home is worth about $80,000, and the typical rent is about $720 a month.

How educated are people in St. Johns, Illinois?

About 18.9% of adults age 25 and over in St. Johns, Illinois hold a bachelor's degree or higher.

What is the poverty rate in St. Johns, Illinois?

About 14.4% of people in St. Johns, Illinois live below the federal poverty line.

Has St. Johns, Illinois grown since 1990?

Yes, St. Johns, Illinois has shrunk since 1990. The population has lost about 59 residents, a change of about -24 percent over that period.

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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

How we source and harmonize this data →

St. Johns, Illinois: demographics, income & housing data · CensusEasy