With 7,715 people, St. Johns is a city in Michigan. The median age is 44.3, about 5 years above the US median. The foreign-born share is 2%. The typical home is worth $192,400, having more than doubled since 2000. About 26% of adults have finished a four-year degree. There are 1,831 people per square mile.
At a glance
Lower income
median household income $68,728, below the US median
US median: $82,259
Older
median age 44.3
US median: 38.9
Less educated
26% hold a bachelor's degree
US average: 36%
Stable housing
home values roughly flat, inflation adjusted
US median home: $376,019
Unique to this place
What stands out about St. Johns
What changed most since 1990
Median age31.1 → 44.3(+13.2 years)US over the same years: +6.0 years
White share97.0% → 89.9%(−7.1 pts)US over the same years: −17.8 pts
Median home value (2024 dollars)$146,404 → $192,400(+31%)US over the same years: +67%
St. Johns's population equals 9.7% of Clinton County's. Its number of households without a car equals 26% of the county's. Its number of foreign-born residents equals 7.1% of the county's.
Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.
Section 09 · Service history
Veterans
Veterans by period of service, 2024
Gulf War (2001 or later)11.9%(49)
US avg: 26.4%
Gulf War (1990s)15%(62)
US avg: 24.3%
Vietnam era50%(206)
US avg: 33.1%
Korean War6.6%(27)
US avg: 4.5%
World War II1.5%(6)
US avg: 1%
Share of the 412 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Over time
St. Johns, decade by decade
St. Johns population, inflation-adjusted income and home value, education, and diversity by year
Year
Population
Median household income
Median home value
Bachelor's degree+
Diversity score
1990
7,284
$65,884
$146,404
14.4%
7.3
2000
7,485
$75,987
$179,980
19.9%
15.2
2010
7,865
$67,222
$199,961
25.9%
20.6
2020
7,698
$76,738
$157,201
23.8%
25.1
2024
7,715
$68,728
$192,400
26.5%
23.6
Census years come from the decennial census and the latest year from the American Community Survey, so part of any change between those two rows can reflect the different surveys. Dollar figures are adjusted for inflation to 2024 dollars; a figure ending in "+" was at the Census Bureau's reporting cap that year. The diversity score runs from 0 to 100; see how it's calculated.
