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CITY · 2020 ACS

St. Marys

Pennsylvania · 12,738 residents · 99.316 sq mi
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The short version

St. Marys has lower-than-average household income, with a median household income of $54,950. Population has declined 12% since 2000. 20% of adults hold a bachelor's degree or higher, below the national rate of 33%. Median home value is $120,400. With a median age of 48.3, the population is older than the US median of 38.8.

At a glance
Lower income
below the US median
US median: $66,278
Older
median age 48.3
US median: 38.8
Less educated
20% hold a bachelor's degree
US average: 33%
More affordable
home values down 9%, inflation adjusted
US median home: $265,253
Section 01

Population & growth

Total population
12,738
−12%since 2000
from 14,502 in 2000
1990 – 2025
Population density
128 / sq mi
−12%since 2000
from 146 / sq mi in 2000
US average: 280
Median age
48.3
+23%since 2000
from 39.4 in 2000
US average: 38.8
Population, 1990 – 2024
5K7K10K13K15K1990201020202024St. Marys
202413K
1990201020202024
Section 02

Income & economy

Median household income
$54,950
−12%inflation adjusted, since 2000
from $41,593 in 2000
US average: $66,278
1990 – 2024
Per capita income
$32,627
+64%since 2000
from $19,885 in 2000
US average: $35,364
Households earning $100K+
35.5%
+10.4 ptssince 2009
from 25.1% in 2009
US average: 43.9%
Poverty rate
9.2%
+4.4 ptssince 2000
from 4.8% in 2000
US average: 12.8%
Workforce by industry, 2020
Retail trade41.3%
US avg: 10%
Information9.5%
US avg: 11.1%
Wholesale trade4.5%
US avg: 6.7%
Finance & insurance3.9%
US avg: 5.5%
Transportation & warehousing3%
US avg: 2.5%
Other services2.5%
US avg: 6.6%
Professional, scientific, technical2.4%
US avg: 4.7%
Education & health services1.5%
US avg: 0.8%
Public administration1.2%
US avg: 4.7%
Agriculture, forestry, fishing1.1%
US avg: 1.7%
Arts, entertainment, food1.1%
US avg: 2%
Construction0.9%
US avg: 1.2%
Manufacturing0.2%
US avg: 0.5%
BARS: THIS PLACE · TICKS: US AVERAGE
Section 03

Housing

Median home value
$120,400
−9%inflation adjusted, since 2000
from $87,900 in 2000
US average: $265,253
1990 – 2024
Median gross rent
$654
−4%inflation adjusted, since 2000
from $454 in 2000
US average: $1,124
Owner-occupied
75.9%
−1.6 ptssince 2000
from 77.4% in 2000
24.1% rent
Afford Score
2.2
+4%since 2000
from 2.1 in 2000
1990 – 2024
RELATED:See current rent listings in St. Marys on RentDataNow
Section 04

Race & ethnicity

2000
White, non-Hispanic98.6%(14,299)
Black0.2%(30)
Hispanic / Latino0.3%(44)
Asian0.4%(60)
Other0%
Diversity Score2.3%(334)
2020
White, non-Hispanic95.4%(12,146)
Black0.2%(25)
Hispanic / Latino1%(124)
Asian0.5%(58)
Other1.1%(136)
Diversity Score6.7%(860)
Diversity Score
7
+193%since 2000
from 2 in 2000
1990 – 2024
Section 05

Education

Bachelor's degree or higher
20.4%
+4.9 ptssince 2000
from 15.5% in 2000
US average: 32.9%
High school or higher
93.7%
+9.2 ptssince 2000
from 84.4% in 2000
US average: 88.5%
Graduate degree
6.1%
+1.2 ptssince 2000
from 4.9% in 2000
US average: 12.7%
Section 06

Commute & transportation

Average commute
13.4 min
+32%since 2000
from 10.2 min in 2000
US average: 26.9
Drive alone to work
81.6%
−5.5 ptssince 2009
from 87.1% in 2009
US average: 75.1%
No vehicle available
8.9%
+2.0 ptssince 2009
from 6.9% in 2009
US average: 8.4%
Section 07

Work & employment

Unemployment rate
6.4%
+0.7 ptssince 2011
from 5.7% in 2011
US average: 5.4%
Labor force participation
66.7%
+4.0 ptssince 2011
from 62.6% in 2011
US average: 63.4%
Management & professional
27.8%
−32.2 ptssince 2009
from 60.0% in 2009
US average: 39.3%
Section 08

People & community

Male
47.4%
−1.6 ptssince 2009
from 49.0% in 2009
Female
52.6%
+1.6 ptssince 2009
from 51.0% in 2009
Foreign born
0.8%
+0.5 ptssince 2009
from 0.4% in 2009
US average: 13.5%
Uninsured
2.1%
−91.8 ptssince 2013
from 93.9% in 2013
US average: 8.8%
Drill deeper

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Head to head

Compare St. Marys to nearby cities

ST. MARYS VS
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Income$53,815−2%
Home value$103,800−14%
Population9,046−26%
SEE FULL COMPARISON →
ST. MARYS VS
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Income$51,261−7%
Home value$86,100−28%
Population13,508+10%
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ST. MARYS VS
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Income$79,120+44%
Home value$389,600+224%
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ST. MARYS VS
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Income$45,424−17%
Home value$437,800+264%
Population40,844+233%
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Frequently asked

How many people live in St. Marys, Pennsylvania?

St. Marys, Pennsylvania has about 12,738 residents according to the 2020 American Community Survey.

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

The typical household in St. Marys, Pennsylvania earns about $54,950 a year. Half of households make more than that, and half make less.

Is St. Marys, Pennsylvania expensive?

In St. Marys, Pennsylvania, the median home is worth about $120,400, and the typical rent is about $654 a month.

How educated are people in St. Marys, Pennsylvania?

About 20.4% of adults age 25 and over in St. Marys, Pennsylvania hold a bachelor's degree or higher.

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

About 9.2% of people in St. Marys, Pennsylvania live below the federal poverty line.

Has St. Marys, Pennsylvania grown since 1990?

Yes, St. Marys, Pennsylvania has grown since 1990. The population has added about 7,227 residents, a change of about 131 percent over that period.

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

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