With 2,788 people, St. Marys is a city in Kansas. This skews young, with a median age of 26.6. About 25% of adults have finished a four-year degree. Getting to work takes 16 minutes on average. The typical home is worth $206,900, having more than doubled since 2000. 4% of people here were born outside the United States.
At a glance
Lower income
median household income $76,771, below the US median
US median: $82,259
Younger
median age 26.6
US median: 38.9
Less educated
25% hold a bachelor's degree
US average: 36%
Less affordable
home values up 43%, inflation adjusted
US median home: $376,019
Unique to this place
What stands out about St. Marys
What changed most since 1990
Median age33.1 → 26.6(−6.5 years)US over the same years: +6.0 years
Homes owned by their occupants73.1% → 64.3%(−8.8 pts)US over the same years: +0.9 pts
Adults with a bachelor's degree14.4% → 24.7%(+10.3 pts)US over the same years: +15.3 pts
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)29.9%(53)
US avg: 26.4%
Gulf War (1990s)11.3%(20)
US avg: 24.3%
Vietnam era49.2%(87)
US avg: 33.1%
Korean War0%(0)
US avg: 4.5%
World War II0%(0)
US avg: 1%
Share of the 177 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. Marys, decade by decade
St. Marys 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
1,766
$60,779
$120,963
14.4%
11.8
2000
2,198
$69,374
$144,822
18.8%
18.4
2010
2,627
$71,202
$179,965
22.3%
31.4
2020
2,759
$75,184
$187,987
22.9%
42.4
2024
2,788
$76,771
$206,900
24.7%
44.4
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.
