St. Marys is a city in Camden County, Georgia, home to about 19,166 people across 23 square miles. Its ZIP code is 31558.
Homes sold for a median of $181 per square foot in the three months ending August 2026, a balanced market.
Mostly St. Marys; also Kings Bay Base
Each card is that ZIP code’s whole market, including any part outside St. Marys. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up St. Marys’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Jacksonville International Airport (JAX)18 miles away |
|---|---|
| Nearest city of 250,000+ | Jacksonville, FL28 miles away |
| Nearest city of 1 million+ | Philadelphia, PA735 miles away |
Straight-line distances from the center of St. Marys; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
St. Marys had 18,256 residents in the 2020 census, up 33% since 2000.
It’s the 61st largest of 669 towns in Georgia by population.
Camden County grew from 7,669 residents in 1900 to 54,768 in 2020.
Camden County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 91°F in summer, and winter lows average 45°F. About 50 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Fernandina Beach, FL weather station (7 miles away).
10,074 jobs at 947 businesses in Camden County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
180 doctors and other health care providers list an office in St. Marys.
Nearest hospitals
Providers with an office here
| Primary care doctors | 19 |
|---|---|
| Specialist doctors | 15 |
| Dentists | 11 |
| Nurse practitioners and physician assistants | 41 |
| Mental health providers | 52 |
| Physical and occupational therapists | 35 |
| Optometrists | 1 |
| Chiropractors | 6 |
| Pharmacies | 6 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Parks (6 nearby)
Grocery stores (1 nearby)
Pharmacies (2 nearby)
Libraries (1 nearby)
Museums (1 nearby)
Theaters and performance venues (2 nearby)
Counts are within about 3.5 miles of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Established in 1792.
Source: Wikidata (wikidata.org), the free knowledge base; people are listed by place of birth.
Public schools here are run by Camden County. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Crooked River Elementary SchoolSaint Marys | Pre-K–5 | 611 | Public | 5.3 mi |
| Mary Lee Clark Elementary SchoolSaint Marys | Pre-K–5 | 480 | Public | 3.8 mi |
| Saint Marys Elementary SchoolSaint Marys | Pre-K–5 | 623 | Public | 0.2 mi |
| Sugarmill ElementarySaint Marys | Pre-K–5 | 651 | Public | 5.7 mi |
| Saint Marys Middle SchoolSaint Marys | 6–8 | 1,077 | Public | 2.2 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| New Hope Christian AcademySaint Marys | Pre-K–12 | 70 | Baptist | 3.2 mi |
| Advance Learning CenterSaint Marys | 1–12 | 40 | Christian (no specific denomination) | 5.2 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools; Private School Universe Survey (2023-2024) for private schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with Kings Bay Base.
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.