With 12,811 people, St. Ann is a city in Missouri. 20% of adults hold a bachelor's degree, below the 36% national rate. Home values have more than doubled since 2000, reaching $126,600. Density works out to 4,061 people per square mile. The median age is 34.8, younger than the US median of 38.9. That trails the Missouri median by roughly 26%.
At a glance
Lower income
median household income $52,323, below the US median
US median: $82,259
Younger
median age 34.8
US median: 38.9
Less educated
20% 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. Ann
What changed most since 1990
White share91.3% → 55.1%(−36.2 pts)US over the same years: −17.8 pts
Black share6.5% → 24.5%(+18.0 pts)US over the same years: +0.2 pts
Population14,489 → 12,811(−12%)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)15%(55)
US avg: 26.4%
Gulf War (1990s)28.9%(106)
US avg: 24.3%
Vietnam era48.2%(177)
US avg: 33.1%
Korean War0%(0)
US avg: 4.5%
World War II0%(0)
US avg: 1%
Share of the 367 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. Ann, decade by decade
St. Ann 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
14,489
$65,589
$136,084
9.0%
20.2
2000
13,607
$58,932
$117,132
12.6%
41.8
2010
13,020
$58,052
$154,359
16.9%
61.8
2020
13,019
$58,171
$111,508
18.2%
77.1
2024
12,811
$52,323
$126,600
20.4%
77.0
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.
