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zipcodes.pro — CITY/GA/ST-MARYS

St. Marys ZIP code, Georgia

The ZIP code for St. Marys, GA is 31558, and its area code is 912.

USPS city name
1 ZIP code
Overlapping the city
1 more
Population
19,166
Area code
912
State
Georgia

Also written Saint Marys, the spelling the Postal Service uses.

Mail addressed to St. Marys uses the ZIP code above. 1 more ZIP code covers part of the city but is addressed as somewhere else; they are listed separately below.

St. Marys in numbers

About 19,166 people live in St. Marys, in 7,415 households. The median household income is $74,288 a year, 4% below the Georgia median of $77,353 (US: $80,734). The median owner-occupied home is valued at $312,300 (about the same as the Georgia median), and median gross rent is $1,183 a month. The median age is 33.8; 29.3% of adults 25 and over hold a bachelor's degree or higher (34.9% across Georgia); the average commute takes 26 minutes.

Population19,166St. Marys19,166
Households7,415St. Marys7,415
Median age33.8St. Marys33.8Georgia37.6US 38.9
Median household income$74,288St. Marys$74,288Georgia$77,353US $80,734
Median home value$312,300St. Marys$312,300Georgia$303,300US $332,700
Median gross rent$1,183St. Marys$1,183Georgia$1,393US $1,413
Bachelor's degree or higher29.3%St. Marys29.3%Georgia34.9%US 35.7%
Mean commute26.2 minSt. Marys26.2 minGeorgia28.3 minUS 26.4 min
Population density751 / sq miSt. Marys751 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place St. Marys city. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Saint Marys

ZIP codes with the USPS city name Saint Marys
ZIP City Type Population Median income Median home
31558 Saint Marys , GA Standard 22,591 $74,268 $297,000

Other ZIP codes overlapping St. Marys

These ZIP codes cover part of St. Marys but are addressed as somewhere else.

ZIP codes overlapping St. Marys
ZIP City Type Population Median income Median home
31548 Kingsland , GA Standard 24,070 $75,804 $250,600

Map of St. Marys ZIP codes

31558

The ZIP codes of St. Marys, GA, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near St. Marys

The nearest larger towns are Kingsland (19,627 people, 14 mi), Jacksonville, FL (977,670 people, 29 mi) and Jacksonville Beach, FL (23,654 people, 35 mi).

Towns near St. Marys
TownPopulationDistance
Yulee, FL 16,648 8.4 mi
Fernandina Beach, FL 13,420 10.2 mi
Kingsland 19,627 14.0 mi
Hilliard, FL 3,034 20.9 mi
Nassau Village-Ratliff, FL 4,737 21.8 mi
Folkston 4,631 26.1 mi
Brunswick 15,307 27.0 mi
Jacksonville, FL 977,670 29.4 mi

More nearby: every ZIP code in Camden County · Georgia ZIP codes

Cite this page

zipcodes.pro. “St. Marys, GA ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/ga/st-marys

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