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CITY · 2010 ACS

St. Marys

Iowa · 127 residents · 0.141 sq mi
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The short version

St. Marys is significantly wealthier than the US average, with a median household income of $70,833. Population has declined 5% since 2000. Median home value is $116,100. Households here earn about 45% more than the Iowa median.

At a glance
Wealthier
above the US median
US median: $52,703
Mid-age
median age 37.6
US median: 37.2
Average education
26% hold a bachelor's degree
US average: 28%
Stable housing
home values roughly flat, inflation adjusted
US median home: $225,659
Section 01

Population & growth

Total population
127
−5%since 2000
from 134 in 2000
1990 – 2025
Population density
901 / sq mi
−5%since 2000
from 950 / sq mi in 2000
US average: 261
Median age
37.6
+4%since 2000
from 36.0 in 2000
US average: 37.2
Population, 1990 – 2024
821241672102521990201020202024St. Marys
202496
1990201020202024
Section 02

Income & economy

Median household income
$70,833
+44%inflation adjusted, since 2000
from $38,750 in 2000
US average: $52,703
1990 – 2024
Per capita income
$22,089
+32%since 2000
from $16,747 in 2000
US average: $27,286
Households earning $100K+
46.3%
+2.0 ptssince 2009
from 44.3% in 2009
US average: 33.3%
Poverty rate
11.9%
+11.9 ptssince 2000
from 0.0% in 2000
US average: 13.8%
Income inequality (Gini)
0.237
US average: 0.461
Workforce by industry, 2010
Transportation & warehousing11.8%
US avg: 3.1%
Retail trade8.8%
US avg: 10.9%
Wholesale trade5.9%
US avg: 7.2%
Information4.9%
US avg: 11.5%
Other services4.9%
US avg: 7%
Public administration4.9%
US avg: 4.9%
Finance & insurance2%
US avg: 5.1%
Professional, scientific, technical2%
US avg: 4.2%
Agriculture, forestry, fishing0%
US avg: 1.9%
Construction0%
US avg: 1.4%
Manufacturing0%
US avg: 0.5%
Education & health services0%
US avg: 0.9%
Arts, entertainment, food0%
US avg: 2.4%
BARS: THIS PLACE · TICKS: US AVERAGE
Section 03

Housing

Median home value
$116,100
+6%inflation adjusted, since 2000
from $86,300 in 2000
US average: $225,659
1990 – 2024
Owner-occupied
73.8%
−11.9 ptssince 2000
from 85.7% in 2000
19.0% rent
Vacancy rate
3.6%
+0.8 ptssince 2009
from 2.8% in 2009
US average: 12.1%
Owner cost-burdened
13.5%
+6.9 ptssince 2009
from 6.5% in 2009
US average: 30.9%
Renter cost-burdened
0.0%
Unchangedsince 2009
from 0.0% in 2009
US average: 46.8%
Afford Score
1.6
−26%since 2000
from 2.2 in 2000
1990 – 2024
RELATED:See current rent listings in St. Marys on RentDataNow
Section 04

Race & ethnicity

2000
White, non-Hispanic98.5%(132)
Black0%(0)
Hispanic / Latino1.5%(2)
Asian0%(0)
Other0%
Diversity Score3.7%(5)
2010
White, non-Hispanic98.4%(125)
Black0%(0)
Hispanic / Latino1.6%(2)
Asian0%(0)
Other0%(0)
Diversity Score3.9%(5)
Diversity Score
4
+5%since 2000
from 4 in 2000
1990 – 2024
Section 05

Education

Bachelor's degree or higher
26.4%
+9.0 ptssince 2000
from 17.3% in 2000
US average: 27.9%
High school or higher
96.4%
−3.6 ptssince 2000
from 100.0% in 2000
US average: 84.9%
Graduate degree
2.7%
−1.3 ptssince 2000
from 4.0% in 2000
US average: 10.2%
Section 06

Commute & transportation

Average commute
26.8 min
+20%since 2000
from 22.2 min in 2000
US average: 25.2
Drive alone to work
86.9%
+5.0 ptssince 2009
from 81.9% in 2009
US average: 76.2%
Carpooled to work
5.1%
−4.4 ptssince 2009
from 9.4% in 2009
US average: 10.4%
Public transit
0.0%
Unchangedsince 2009
from 0.0% in 2009
US average: 4.7%
Worked from home
0.0%
Unchangedsince 2009
from 0.0% in 2009
US average: 4.1%
Walked to work
8.1%
−0.6 ptssince 2009
from 8.7% in 2009
US average: 2.8%
Biked to work
0.0%
Unchangedsince 2009
from 0.0% in 2009
US average: 0.5%
No vehicle available
0.0%
−2.9 ptssince 2009
from 2.9% in 2009
US average: 8.7%
Section 07

Work & employment

Self-employed
14.7%
−5.4 ptssince 2009
from 20.2% in 2009
US average: 12.9%
Management & professional
46.1%
−12.8 ptssince 2009
from 58.9% in 2009
US average: 35.2%
Section 08

People & community

Male
46.6%
−5.2 ptssince 2009
from 51.8% in 2009
Female
53.4%
+5.2 ptssince 2009
from 48.2% in 2009
Foreign born
2.3%
−2.4 ptssince 2009
from 4.7% in 2009
US average: 12.8%
Veterans
13.5%
−34.2 ptssince 2009
from 47.7% in 2009
US average: 9.9%
Drill deeper

Places similar to St. Marys

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Pop 128
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Pop 123
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Pop 136
Acacia Villas
Pop 131
Places similar to St. Marys
Head to head

Compare St. Marys to nearby cities

ST. MARYS VS
Indianola
Income$75,453+7%
Home value$237,500+105%
Population16,829+13472%
SEE FULL COMPARISON →
ST. MARYS VS
Norwalk
Income$102,722+45%
Home value$303,100+161%
Population15,004+12000%
SEE FULL COMPARISON →
ST. MARYS VS
West Des Moines
Income$86,594+22%
Home value$309,000+166%
Population74,224+59758%
SEE FULL COMPARISON →
ST. MARYS VS
Des Moines
Income$65,932−7%
Home value$194,700+68%
Population212,086+170937%
SEE FULL COMPARISON →
Frequently asked

How many people live in St. Marys, Iowa?

St. Marys, Iowa has about 127 residents according to the 2010 American Community Survey.

What is the median household income in St. Marys, Iowa?

The typical household in St. Marys, Iowa earns about $70,833 a year. Half of households make more than that, and half make less.

Is St. Marys, Iowa expensive?

In St. Marys, Iowa, the median home is worth about $116,100.

How educated are people in St. Marys, Iowa?

About 26.4% of adults age 25 and over in St. Marys, Iowa hold a bachelor's degree or higher.

What is the poverty rate in St. Marys, Iowa?

About 11.9% of people in St. Marys, Iowa live below the federal poverty line.

Has St. Marys, Iowa grown since 1990?

Yes, St. Marys, Iowa has grown since 1990. The population has added about 27 residents, a change of about 27 percent over that period.

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

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