St. Marys, PA
Demographics And Statistics

Demographics | Cost Of Living
Updated: 2025-10-25

Living In St. Marys, Pennsylvania Summary

Life in St. Marys research summary. HomeSnacks has been using Saturday Night Science to research the quality of life in St. Marys over the past nine years using Census, FBI, Zillow, and other primary data sources. Based on the most recently available data, we found the following about life in St. Marys:

  • The population in St. Marys is 12,612.

  • The median home value in St. Marys is $168,600.

  • The median income in St. Marys is $64,471.

  • The cost of living in St. Marys is 91 which is 0.9x lower than the national average.

  • The median rent in St. Marys is $756.

  • The unemployment rate in St. Marys is 8.5%.

  • The poverty rate in St. Marys is 8.4%.

  • The average high in St. Marys is 55.9° and the average low is 34.8°.

St. Marys SnackAbility

5
Overall SnackAbility
Jobs
6/10
Housing
5
Affordability
9
Diversity
3
Safety
N/A
Amenities
6
Education
8
Commute
10

St. Marys, PA Cost Of Living

Cost of living in St. Marys summary. We use data on the cost of living to determine how expensive it is to live in St. Marys. Real estate prices drive most of the variance in cost of living around Pennsylvania. Key points include:

  • The cost of living in St. Marys is 91 with 100 being average.

  • The cost of living in St. Marys is 0.9x lower than the national average.

  • The median home value in St. Marys is $168,600.

  • The median income in St. Marys is $64,471.

91
St. Marys's Overall Cost Of Living
0.9x
Lower Than The National Average

Cost Of Living In St. Marys Comparison Table

Living Expense St. Marys Pennsylvania National Average
Overall 91 100 100
Services 98 101 100
Groceries 99 101 100
Health 90 95 100
Housing 67 93 100
Transportation 115 108 100
Utilities 108 108 100

St. Marys, PA Weather

  • The average high in St. Marys is 55.9° and the average low is 34.8°.

  • There are 95.6 days of precipitation each year.

  • Expect an average of 44.7 inches of precipitation each year with 57.9 inches of snow.

StatSt. Marys
Average Annual High55.9
Average Annual Low34.8
Annual Precipitation Days95.6
Average Annual Precipitation44.7
Average Annual Snowfall57.9
55.9°
Average High
95.6
Days of Rain

St. Marys, PA Photos

St Marys City Hall Apr
Source: Public Domain

Rankings for St. Marys in Pennsylvania

Locations Around St. Marys

Map Of St. Marys, PA

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4

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Population 5,689

5

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Population 5,918

6

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7

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St. Marys Demographics And Statistics

Population over time in St. Marys

The current population in St. Marys is 12,612. The population has decreased -5.3% from 2010.

Year Population % Change
2023 12,612 -0.6%
2022 12,691 -0.6%
2021 12,771 3.6%
2020 12,333 -0.8%
2019 12,429 -0.8%
2018 12,535 -0.5%
2017 12,603 -1.1%
2016 12,748 -0.8%
2015 12,845 -0.7%
2014 12,940 -0.6%
2013 13,020 -0.6%
2012 13,095 -0.8%
2011 13,206 -0.8%
2010 13,318 -

Race / Ethnicity in St. Marys

White
93.2% (11,760)
African American
1.7% (218)
American Indian
0.0% (0)
Asian
0.3% (35)
Hawaiian
0.0% (0)
Other
0.0% (0)
Two Or More
3.1% (397)
Hispanic
1.6% (202)

St. Marys is:

  • 93.2% White with 11,760 White residents.

  • 1.7% African American with 218 African American residents.

  • 0.0% American Indian with 0 American Indian residents.

  • 0.3% Asian with 35 Asian residents.

  • 0.0% Hawaiian with 0 Hawaiian residents.

  • 0.0% Other with 0 Other residents.

  • 3.1% Two Or More with 397 Two Or More residents.

  • 1.6% Hispanic with 202 Hispanic residents.

Race St. Marys PA USA
White 93.2% 73.8% 58.2%
African American 1.7% 10.3% 12.0%
American Indian 0.0% 0.1% 0.5%
Asian 0.3% 3.7% 5.7%
Hawaiian 0.0% 0.0% 0.2%
Other 0.0% 0.4% 0.5%
Two Or More 3.1% 3.3% 3.9%
Hispanic 1.6% 8.4% 19.0%

Gender in St. Marys

Female
52.3% (6,598)
Male
47.7% (6,014)
  • St. Marys is 52.3% female with 6,598 female residents.

  • St. Marys is 47.7% male with 6,014 male residents.

Gender St. Marys PA USA
Female 52.3% 50.7% 50.5%
Male 47.7% 49.3% 49.5%

Highest level of educational attainment in St. Marys for adults over 25

  • 3.0% of adults in St. Marys completed < 9th grade.

  • 4.0% of adults in St. Marys completed 9-12th grade.

  • 51.0% of adults in St. Marys completed high school / ged.

  • 12.0% of adults in St. Marys completed some college.

  • 11.0% of adults in St. Marys completed associate's degree.

  • 14.0% of adults in St. Marys completed bachelor's degree.

  • 5.0% of adults in St. Marys completed master's degree.

  • 0.0% of adults in St. Marys completed professional degree.

  • 0.0% of adults in St. Marys completed doctorate degree.

< 9th Grade
3.0% (378)
9-12th Grade
4.0% (504)
High School / GED
51.0% (6,432)
Some College
12.0% (1,513)
Associate's Degree
11.0% (1,387)
Bachelor's Degree
14.0% (1,765)
Master's Degree
5.0% (630)
Professional Degree
0.0% (0)
Doctorate Degree
0.0% (0)
Education St. Marys PA USA
< 9th Grade 3.0% 3.0% 5.0%
9-12th Grade 4.0% 5.0% 6.0%
High School / GED 51.0% 33.0% 26.0%
Some College 12.0% 15.0% 19.0%
Associate's Degree 11.0% 9.0% 9.0%
Bachelor's Degree 14.0% 21.0% 21.0%
Master's Degree 5.0% 10.0% 10.0%
Professional Degree 0.0% 2.0% 2.0%
Doctorate Degree 0.0% 2.0% 2.0%

Household Income For St. Marys, Pennsylvania

  • 2.3% of households in St. Marys earn Less than $10,000.

  • 2.7% of households in St. Marys earn $10,000 to $14,999.

  • 11.8% of households in St. Marys earn $15,000 to $24,999.

  • 8.2% of households in St. Marys earn $25,000 to $34,999.

  • 12.9% of households in St. Marys earn $35,000 to $49,999.

  • 20.0% of households in St. Marys earn $50,000 to $74,999.

  • 17.0% of households in St. Marys earn $75,000 to $99,999.

  • 16.2% of households in St. Marys earn $100,000 to $149,999.

  • 4.9% of households in St. Marys earn $150,000 to $199,999.

  • 4.1% of households in St. Marys earn $200,000 or more.

Less than $10,000
2.3% (28,466)
$10,000 to $14,999
2.7% (34,471)
$15,000 to $24,999
11.8% (148,559)
$25,000 to $34,999
8.2% (103,191)
$35,000 to $49,999
12.9% (162,570)
$50,000 to $74,999
20.0% (251,750)
$75,000 to $99,999
17.0% (214,166)
$100,000 to $149,999
16.2% (204,825)
$150,000 to $199,999
4.9% (61,603)
$200,000 or more
4.1% (51,595)
Income St. Marys PA USA
Less than $10,000 2.3% 4.8% 4.9%
$10,000 to $14,999 2.7% 3.7% 3.6%
$15,000 to $24,999 11.8% 7.0% 6.6%
$25,000 to $34,999 8.2% 7.1% 6.8%
$35,000 to $49,999 12.9% 10.7% 10.4%
$50,000 to $74,999 20.0% 16.1% 15.7%
$75,000 to $99,999 17.0% 12.9% 12.7%
$100,000 to $149,999 16.2% 17.6% 17.4%
$150,000 to $199,999 4.9% 9.0% 9.3%
$200,000 or more 4.1% 11.1% 12.6%

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