31558 ZIP Code — Saint Marys, GA

Camden County, Georgia

ZIP code 31558 is located in Saint Marys, Georgia, within Camden County. It covers approximately 71.75 square miles and serves a population of 22,179 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 912.

About ZIP code 31558

The housing stock consists of a mix of housing types. Most homes were built in the 1990s, giving the area an established character. Median home value is $234,500. Owner-occupancy sits near the national average at 56%.

Median household income is $68,360. Poverty affects 20% of residents, above the national average. 32% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 23 minutes is near the national average.

Educational attainment is near the national average, with 22% of residents holding a bachelor's degree or higher.

Notable community characteristics include a notable veteran presence at 17% of civilians, above the national average of 7%.

Overall, ZIP code 31558 reflects a community defined by economic challenges above the national average, a strong veteran community, and a significant Social Security-dependent population.

22,179

population

71.75

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

31558 ZIP code map

Cities in ZIP code 31558

Below are the cities the US Postal Service accepts for ZIP code 31558. Using any city not on this list may result in mail delivery delays.

City	Status
Saint Marys	Preferred

Nearby ZIP codes

31569 Woodbine (7.9 mi) 31548 Kingsland (12 mi) 32097 Yulee (15.1 mi) 32034 Fernandina Beach (15.4 mi) 31565 Waverly (16.2 mi) 31527 Jekyll Island (16.7 mi) 31568 White Oak (18.7 mi)

Demographics updated 06/2026

Population
Total population	22,179
Population density	309 / sq mi
State FIPS	13
County FIPS	039

Geography
Land area	71.75 sq mi
Water area	22.05 sq mi
Latitude	30.8427
Longitude	-81.5289
Timezone	Eastern (ET)
Area code	912

Total population by age

Gender

Race & ethnicity

Economics updated 06/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	41.5%	43.3%	41.5%
$50k – $100k	31.1%	31.3%	30.3%
$100k – $200k	24.1%	22.5%	21.2%
Over $200k	3.3%	3.0%	7.1%

Demographics & statistics

22,179

Population

309

People per sq mi

32.9

Median age

$68,360

Median household income

$33,481

Per capita income

$234,500

Median home value

$1,203

Median monthly rent

56.4%

Home ownership

20.2%

Poverty rate

5.7%

Unemployment

5,754

Housing units

22.2%

Bachelor's or higher

Age distribution

Male Female

872

Under 5

865

709

5–9

703

713

10–14

707

804

15–19

798

883

20–24

876

1,958

25–34

1,942

1,422

35–44

1,410

955

45–54

948

538

55–59

533

579

60–64

574

1,068

65–74

1,060

524

75–84

520

109

85+

109

← Male

Female →

Age summary

Group	Count	%
Under 18	5,562	25.1%
18 and over	16,617	74.9%
65 and over	3,390	15.3%
Median age	32.9 years

Race & ethnicity

White 69.9%

Black or African American 12.8%

Two or more races 8.7%

Hispanic or Latino 5.1%

Asian 1.8%

Other race 1.4%

Native Hawaiian / Pacific Islander 0.2%

American Indian / Alaska Native 0.1%

Group	Count	%
White	16,346	69.9%
Black or African American	2,998	12.8%
Two or more races	2,022	8.7%
Hispanic or Latino	1,194	5.1%
Asian	424	1.8%
Other race	330	1.4%
Native Hawaiian / Pacific Islander	38	0.2%
American Indian / Alaska Native	21	0.1%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	41.5%	43.3%	41.5%
$50k – $100k	31.1%	31.3%	30.3%
$100k – $200k	24.1%	22.5%	21.2%
Over $200k	3.3%	3.0%	7.1%

Under $10k 8.0%

$10k–$15k 3.2%

$15k–$25k 9.6%

$25k–$35k 7.3%

$35k–$50k 11.4%

$50k–$75k 15.6%

$75k–$100k 12.2%

$100k–$150k 19.6%

$150k–$200k 8.5%

$200k+ 4.7%

Range	% of households
Under $10k	8.0%
$10k–$15k	3.2%
$15k–$25k	9.6%
$25k–$35k	7.3%
$35k–$50k	11.4%
$50k–$75k	15.6%
$75k–$100k	12.2%
$100k–$150k	19.6%
$150k–$200k	8.5%
$200k+	4.7%
Median income	$68,360

Housing

Home values

Under $50k 4.9%

$50k–$100k 5.4%

$100k–$150k 11.7%

$150k–$200k 17.1%

$200k–$300k 27.3%

$300k–$500k 21.0%

$500k–$1M 11.4%

$1M+ 1.1%

Housing overview

Metric	Value
Median home value	$234,500
Median rent / month	$1,203
Owner occupied	56.4%
Renter occupied	43.6%
Vacant	9.1%
Single-family detached	67.3%
Large apartment buildings	4.1%
Mobile homes	6.7%
Median rooms	5.9
Avg household size (owned)	2.36

Year built

Era	%
2020 or later	1.0%
2010–2019	7.0%
2000–2009	21.4%
1990–1999	27.5%
1980–1989	21.6%
1970–1979	8.4%
1960–1969	8.1%
1950–1959	3.1%
1940–1949	0.4%
1939 or earlier	1.4%

Bedrooms

Size	% of units
No bedroom (studio)	0.9%
1 bedroom	3.6%
2 bedrooms	20.9%
3 bedrooms	53.8%
4 bedrooms	17.3%
5+ bedrooms	3.6%

Vehicles per household

Vehicles	% of households
No vehicle	5.7%
1 vehicle	34.8%
2 vehicles	42.3%
3 or more	17.2%

Heating fuel

Fuel type	%
Utility gas	5.9%
Electricity	91.8%
Propane / LP gas	0.6%
Fuel oil	0.1%
Wood	0.1%
No fuel used	1.6%

Households & families

Household type	Count	%
Married-couple family	4,005	46.2%
Cohabiting couple	578	6.7%
Male householder, no spouse	1,359	15.7%
Female householder, no spouse	2,725	31.4%
Households with children under 18	3,107	35.8%
Households with seniors (65+)	2,537	29.3%
Average household size	2.54

Marital status

Status	Male	Female
Never married	33.4%	26.6%
Married	49.1%	47.5%
Separated	4.6%	1.9%
Widowed	0.9%	9.5%
Divorced	12.0%	14.5%

Education

Less than 9th grade 2.1%

Some HS, no diploma 4.1%

HS graduate 29.9%

Some college, no degree 32.4%

Associate's degree 9.2%

Bachelor's degree 14.4%

Graduate / professional 7.8%

Metric	%
HS diploma or higher	93.7%
Bachelor's or higher	22.2%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	360	6.5%
Kindergarten	347	6.2%
Elementary school	2,274	40.8%
High school	1,506	27.0%
College / grad school	1,083	19.4%

Employment

Industry of employment

Education & healthcare 18.2%

Retail trade 15.9%

Arts, food & hospitality 14.2%

Manufacturing 13.3%

Professional & management 10.2%

Transportation & utilities 6.2%

Public administration 6.2%

Construction 5.6%

Finance & real estate 3.4%

Other services 3.2%

Wholesale trade 2.1%

Agriculture & mining 0.9%

Information 0.5%

Occupation

Category	%
Management, business & arts	35.4%
Service	20.3%
Sales & office	18.3%
Natural resources & construction	5.9%
Production & transportation	20.1%

Employment type

Type	%
Private sector	73.7%
Government	21.6%
Self-employed	4.7%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	75.1%
Carpool	10.4%
Public transit	0.0%
Walk	2.0%
Work from home	10.8%
Other means	1.8%
Avg commute (minutes)	23.1

Poverty

All people 20.2%

Under 18 years 34.9%

18 and over 15.4%

Married-couple families 4.2%

Female-led households 61.5%

Income support

Source	% of households
Social Security	32.2%
Retirement income	28.2%
Supplemental Security	4.6%
Cash public assistance	3.2%
Food stamps / SNAP	11.2%

Health indicators

Condition	%
Obesity	36.2%
High blood pressure	30.0%
High cholesterol	29.0%
Diabetes	9.6%
Heart disease	5.5%
Stroke	2.6%
Asthma	9.7%
Arthritis	23.1%
Kidney disease	2.6%
Pulmonary disease	6.1%
Cancer	5.1%

Behavior / access	%
Smoking	18.7%
Binge drinking	17.0%
No physical activity	24.8%
Less than 7 hrs sleep	37.0%
Depression	21.4%
Fair or poor health	14.3%
Poor mental health	16.5%
Poor physical health	10.0%
No health insurance	19.5%
Visited doctor (checkup)	75.8%
Visited dentist	59.3%
Cholesterol screening	87.3%
Teeth loss	14.5%

Veterans & disability

Veterans	Count	%
Civilian veterans	2,572	16.7%

Disability	%
Any disability	17.4%
Under 18	8.0%
18–64 years	18.0%
65 and over	30.9%

Health insurance coverage

Type	%
Private insurance	70.5%
Public insurance	38.6%
No insurance	8.1%
Uninsured under 19	1.6%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	20,442	92.2%
Spanish	451	2.2%
Other Indo-European	306	1.5%
Asian & Pacific Islander	94	0.5%
Other languages	39	0.2%

Place of birth & citizenship

Origin	Count	%
Native born (US)	21,409	96.5%
Born in same state	20,954	94.5%
Born in different state	6,505	29.3%
Foreign born	455	2.1%
Naturalized citizen	770	3.5%
Not a US citizen	442	57.4%

Ancestry

Ancestry	Count	%
Italian	4,254	19.2%
French	2,227	10%
Arab	1,773	8%
English	240	1.1%
Polish	176	0.8%

Ancestry	Count	%
Irish	67	0.3%
Dutch	24	0.1%
German	13	0.1%
Norwegian	5	0%

Technology access

Metric	% of households
Computer access	39.1%
Internet access	98.0%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions about ZIP code 31558

What city is ZIP code 31558 in?

ZIP code 31558 is primarily assigned to Saint Marys, Georgia.

What county is ZIP code 31558 in?

ZIP code 31558 falls within Camden County, Georgia.

What is the poverty rate in ZIP code 31558?

20% of residents in ZIP code 31558 live below the poverty line, above the national average.

Does ZIP code 31558 have a large veteran population?

17% of civilians in ZIP code 31558 are veterans, above the national average of ~7%.

What is the population of ZIP code 31558?

ZIP code 31558 has an estimated population of 22,179 residents, with a density of 309 people per square mile.

What is the typical home value in ZIP code 31558?

The median home value in ZIP code 31558 is $234,500.

What timezone is ZIP code 31558 in?

ZIP code 31558 observes the EST timezone.