St. Marys, Georgia Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of St. Marys, Georgia is 18,805 as of the 2023 American Community Survey, making it the 61st-largest city in Georgia. The median household income is $67,271, the median home value is $259,300, and the median age is 33.6.
The population has grown 16.5% since 2010 (17,272 → 20,119).
18,805
Population
737
People / sq mi
$67,271
Median Income
$259,300
Median Home Value
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St. Marys covers 25.5 sq mi of land at 737 people per square mile.
About St. Marys, GA
St. Marys is distinguished by its share of foreign-born residents, 64.6% of the population. St. Marys is a city in Georgia with a population of 18,805.
The typical household here earns about $67,271, below the US median of $78,538. Hardship is pronounced — at 19.7%, poverty is near the top of the range for US cities, above the national 12.4%. The typical home is valued at $259,300, with typical rent around $1,171.
27.2% of adults 25 and older hold a bachelor’s degree, below the national average of 35.0%. Around 12.0% of workers work from home, below the national 14.0%, and the average commute runs about 26 minutes each way.
The large foreign-born share is a defining thread in St. Marys, shaping language, household composition, and the labor force behind the economic figures above.
St. Marys city Population History (2010-2024)
The city of St. Marys city had a population of 17,272 in 2010 and 20,119 in 2024, a 16.5% growth over 14 years. The peak was 20,119 in 2024. Average annual growth rate: 1.10%.
20,119
Population (2024)
17,272
Population (2010)
20,119
Peak (2024)
1.10%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 17,272 |
| 2011 | 17,141 |
| 2012 | 17,485 |
| 2013 | 17,570 |
| 2014 | 17,752 |
| 2015 | 17,770 |
| 2016 | 17,868 |
| 2017 | 18,028 |
| 2018 | 18,170 |
| 2019 | 18,567 |
| 2020 | 18,534 |
| 2021 | 18,644 |
| 2022 | 19,008 |
| 2023 | 19,552 |
| 2024 | 20,119 |
Race & Ethnicity
| White | 72.9% |
| Black or African American | 15.5% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.4% |
| Two or More Races | 0.0% |
Economy & Income
$67,271
Median Household Income
$34,958
Per Capita Income
19.7%
Poverty Rate
4.6%
Unemployment Rate
Housing
$259,300
Median Home Value
$1,171
Median Rent
55.2%
Owner-Occupied
Education
93.3%
High School+
27.2%
Bachelor's+
Commute
0.1%
Drive Alone
75.1%
Public Transit
12.0%
Work From Home
26.3 min
Avg Commute
Community Profile
64.6%
Foreign Born
94.7%
Non-English at Home
17.4%
Veterans
18.5%
With Disability
92.4%
Health Insurance
98.2%
Internet Access
Employment by Industry
| Professional, Scientific & Management | 16.4% |
| Education, Health Care & Social Services | 15.3% |
| Manufacturing | 12.0% |
| Finance, Insurance & Real Estate | 11.1% |
| Retail Trade | 6.5% |
| Public Administration | 6.1% |
| Information | 4.5% |
| Construction | 4.2% |
| Arts, Entertainment & Food Services | 2.9% |
| Agriculture & Mining | 1.0% |
| Transportation & Warehousing | 0.6% |
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City rankings
Frequently Asked Questions
St. Marys, Georgia has a population of 18,805 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 61st-largest city in Georgia.
The median household income in St. Marys, Georgia is $67,271, with 19.7% of residents living below the federal poverty level.
The median home value in St. Marys, Georgia is $259,300, with median monthly rent at $1,171 and a homeownership rate of 55.2%.
The median age in St. Marys, Georgia is 33.6 years. The population is 50.4% male and 49.6% female.
The population has grown 16.5% since 2010 (17,272 → 20,119).
St. Marys city, GA Climate
St. Marys city, GA has an average annual temperature of 20.2°C (68°F) and receives about 1292 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
20.2°C
Avg Temp
1292
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | 12° / 53° | 97 mm |
| February | 13° / 55° | 87 mm |
| March | 16° / 62° | 105 mm |
| April | 20° / 67° | 74 mm |
| May | 23° / 74° | 79 mm |
| June | 26° / 79° | 139 mm |
| July | 28° / 82° | 145 mm |
| August | 27° / 81° | 158 mm |
| September | 26° / 78° | 176 mm |
| October | 21° / 71° | 97 mm |
| November | 17° / 62° | 63 mm |
| December | 13° / 56° | 72 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit St. Marys city, GA
The most comfortable months to visit St. Marys city, GA are typically April, October and May, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 32°C high). The coldest is January (near 6°C low). September is usually the wettest month.
Where to stay near St. Marys
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.