St. Martins is home to 1,228 people in Missouri. Owners hold 82% of the housing stock. 1% of people here were born outside the United States. That is roughly 26% ahead of the Missouri median. Renters pay $796 a month at the median. The poverty rate is 5.0%, under the national 12.5%.
At a glance
Wealthier
median household income $89,250, above the US median
US median: $82,259
Mid-age
median age 38.1
US median: 38.9
More educated
39% hold a bachelor's degree
US average: 36%
Less affordable
home values up 37%, inflation adjusted
US median home: $376,019
Unique to this place
What stands out about St. Martins
What changed most since 1990
Adults with a bachelor's degree7.5% → 39.3%(+31.8 pts)US over the same years: +15.3 pts
White share98.6% → 90.1%(−8.5 pts)US over the same years: −17.8 pts
Population698 → 1,228(+76%)US over the same years: +35%
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)23.5%(20)
US avg: 26.4%
Gulf War (1990s)31.8%(27)
US avg: 24.3%
Vietnam era45.9%(39)
US avg: 33.1%
Korean War3.5%(3)
US avg: 4.5%
World War II0%(0)
US avg: 1%
Share of the 85 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. Martins, decade by decade
St. Martins 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
698
$59,762
$137,524
7.5%
3.5
2000
1,023
$75,396
$177,065
16.6%
7.4
2010
1,140
$77,581
$221,108
26.9%
12.0
2020
1,191
$77,351
$223,379
31.0%
21.3
2024
1,228
$89,250
$242,400
39.3%
23.0
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.
