CensusEasy
CITY

St. Mary

Missouri · 312 residents (2025 est.) · 0.599 sq mi
Time machine
COMPARE TO
Compare
The short version

St. Mary has notably lower household income than the US average, with a median household income of $49,643. Population has fallen 24% since 2000, a loss of 92 residents. 11% of adults hold a bachelor's degree or higher, below the national rate of 36%. Median home value has roughly tripled since 2000, reaching $120,000. With a median age of 48.9, the population is older than the US median of 38.9. Households here earn about 30% less than the Missouri median.

At a glance
Lower income
below the US median
US median: $82,259
Older
median age 48.9
US median: 38.9
Less educated
11% hold a bachelor's degree
US average: 36%
Less affordable
home values up 71%, inflation adjusted
US median home: $376,019
Section 01

Population & growth

Total population
285
−24%since 2000
from 377 in 2000
1990 – 2025
Population density
476 / sq mi
−24%since 2000
from 629 / sq mi in 2000
US average: 281
Median age
48.9
+26%since 2000
from 38.9 in 2000
US average: 38.9

PEP 2025 EST:312 residents (Census Bureau Vintage 2025, released March 2026)

Population, 1990 – 2024
1342603855106361990201020202024St. Mary
2024285
1990201020202024
Section 02

Income & economy

Median household income
$49,643
+1%inflation adjusted, since 2000
from $27,000 in 2000
US average: $82,259
1990 – 2024
Per capita income
$25,123
+49%since 2000
from $16,825 in 2000
US average: $44,673
Households earning $100K+
40.7%
+29.0 ptssince 2009
from 11.8% in 2009
US average: 53.3%
Poverty rate
25.1%
+11.8 ptssince 2000
from 13.2% in 2000
US average: 12.5%
Income inequality (Gini)
0.374
+10%since 2010
from 0.340 in 2010
US average: 0.476
Workforce by industry, 2024
Finance & insurance15.7%
US avg: 5.9%
Professional, scientific, technical15.7%
US avg: 5.1%
Information12.7%
US avg: 10.8%
Retail trade10.8%
US avg: 9.9%
Wholesale trade8.8%
US avg: 6.9%
Transportation & warehousing3.9%
US avg: 2.2%
Other services3.9%
US avg: 6.7%
Public administration3.9%
US avg: 4.8%
Agriculture, forestry, fishing2%
US avg: 1.6%
Manufacturing2%
US avg: 0.4%
Construction0%
US avg: 1.2%
Education & health services0%
US avg: 0.9%
Arts, entertainment, food0%
US avg: 1.9%
BARS: THIS PLACE · TICKS: US AVERAGE
Section 03

Housing

Median home value
$120,000
+71%inflation adjusted, since 2000
from $38,600 in 2000
US average: $376,019
1990 – 2024
Median gross rent
$775
+78%inflation adjusted, since 2000
from $239 in 2000
US average: $1,442
Owner-occupied
66.7%
−16.6 ptssince 2000
from 83.2% in 2000
33.3% rent
Vacancy rate
23.4%
+14.1 ptssince 2009
from 9.3% in 2009
US average: 10.0%
Owner cost-burdened
16.7%
−8.0 ptssince 2009
from 24.6% in 2009
US average: 22.9%
Renter cost-burdened
33.3%
−23.3 ptssince 2009
from 56.7% in 2009
US average: 47.4%
Afford Score
2.4
+69%since 2000
from 1.4 in 2000
1990 – 2024
Gentrification Score
54
RELATED:See current rent listings in St. Mary on RentDataNow
Section 04

Race & ethnicity

2000
White, non-Hispanic92.3%(348)
Black3.2%(12)
Hispanic / Latino2.1%(8)
Asian0%(0)
Other0%
Diversity Score13%(49)
2024
White, non-Hispanic87.7%(250)
Black3.2%(9)
Hispanic / Latino0.4%(1)
Asian0%(0)
Other8.8%(25)
Diversity Score27.7%(79)
Diversity Score
28
+113%since 2000
from 13 in 2000
1990 – 2024
Section 05

Education

Bachelor's degree or higher
10.6%
+5.6 ptssince 2000
from 4.9% in 2000
US average: 35.6%
High school or higher
76.9%
+9.4 ptssince 2000
from 67.5% in 2000
US average: 89.6%
Graduate degree
4.8%
+2.7 ptssince 2000
from 2.1% in 2000
US average: 14.0%
Section 06

Commute & transportation

Average commute
28.1 min
+56%since 2000
from 18.0 min in 2000
US average: 26.5
Drive alone to work
93.9%
+14.5 ptssince 2009
from 79.4% in 2009
US average: 68.9%
Carpooled to work
6.1%
−9.7 ptssince 2009
from 15.8% in 2009
US average: 8.5%
Public transit
0.0%
Unchangedsince 2009
from 0.0% in 2009
US average: 3.2%
Worked from home
0.0%
−0.7 ptssince 2009
from 0.7% in 2009
US average: 15.0%
Walked to work
0.0%
−4.0 ptssince 2009
from 4.0% in 2009
US average: 2.4%
Biked to work
0.0%
Unchangedsince 2009
from 0.0% in 2009
US average: 0.4%
No vehicle available
5.6%
+1.8 ptssince 2009
from 3.8% in 2009
US average: 8.3%
Section 07

Work & employment

Unemployment rate
7.3%
−4.6 ptssince 2011
from 11.9% in 2011
US average: 5.2%
Labor force participation
46.6%
−16.7 ptssince 2011
from 63.3% in 2011
US average: 63.5%
Self-employed
4.9%
−11.5 ptssince 2009
from 16.4% in 2009
US average: 13.1%
Management & professional
18.6%
−30.1 ptssince 2009
from 48.8% in 2009
US average: 42.5%
Section 08

People & community

Male
50.5%
−3.3 ptssince 2009
from 53.9% in 2009
Female
49.5%
+3.3 ptssince 2009
from 46.1% in 2009
Foreign born
0.0%
Unchangedsince 2009
from 0.0% in 2009
US average: 14.1%
Veterans
13.1%
−38.1 ptssince 2009
from 51.2% in 2009
US average: 6.2%
With a disability
37.5%
+18.3 ptssince 2012
from 19.2% in 2012
US average: 13.3%
Uninsured
9.8%
−76.9 ptssince 2013
from 86.7% in 2013
US average: 8.4%
Broadband at home
81.5%
+25.2 ptssince 2017
from 56.3% in 2017
US average: 91.0%
English only at home
98.8%
+0.6 ptssince 2016
from 98.2% in 2016
US average: 77.7%
Spanish at home
1.2%
+0.9 ptssince 2016
from 0.2% in 2016
US average: 13.6%
Drill deeper

Places similar to St. Mary

Meansville
Pop 288
Bronwood
Pop 317
Cobbtown
Pop 344
Munson
Pop 292
Places similar to St. Mary
Head to head

Compare St. Mary to nearby cities

ST. MARY VS
Perryville
Income$51,897+5%
Home value$179,700+50%
Population8,593+2654%
SEE FULL COMPARISON →
ST. MARY VS
Farmington
Income$53,729+8%
Home value$196,500+64%
Population19,226+6062%
SEE FULL COMPARISON →
ST. MARY VS
Park Hills
Income$52,563+6%
Home value$131,300+9%
Population8,753+2705%
SEE FULL COMPARISON →
ST. MARY VS
Waterloo
Income$98,711+99%
Home value$249,500+108%
Population11,132+3468%
SEE FULL COMPARISON →
Frequently asked

How many people live in St. Mary, Missouri?

St. Mary, Missouri has about 285 residents according to the 2024 American Community Survey.

What is the median household income in St. Mary, Missouri?

The typical household in St. Mary, Missouri earns about $49,643 a year. Half of households make more than that, and half make less.

Is St. Mary, Missouri expensive?

In St. Mary, Missouri, the median home is worth about $120,000, and the typical rent is about $775 a month.

How educated are people in St. Mary, Missouri?

About 10.6% of adults age 25 and over in St. Mary, Missouri hold a bachelor's degree or higher.

What is the poverty rate in St. Mary, Missouri?

About 25.1% of people in St. Mary, Missouri live below the federal poverty line.

Has St. Mary, Missouri grown since 1990?

Yes, St. Mary, Missouri has shrunk since 1990. The population has lost about 163 residents, a change of about -36 percent over that period.

Keep going

Explore from here

Up the hierarchy
Missouri
Rankings
Highest income citiesFastest growing citiesMost educated cities
Compare
Compare St. Mary with another place

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

How we source and harmonize this data →

St. Mary, Missouri: demographics, income & housing data · CensusEasy