31328 ZIP Code — Tybee Island, GA

Chatham County, Georgia

ZIP code 31328 is located in Tybee Island, Georgia, within Chatham County. It covers approximately 9.24 square miles and serves a population of 3,369 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 912.

About ZIP code 31328

The housing stock consists of a mix of housing types. Most homes were built in the 2000s, giving the area an established character. Median home value is $567,400. Owner-occupancy is high at 91%, well above the national average.

Median household income is $99,729. The poverty rate of 4% is below the national average. 57% 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 28 minutes is near the national average.

Educational attainment is high — 50% of residents hold a bachelor's degree or higher, well above the national average of 33%.

Overall, ZIP code 31328 reflects a community defined by high homeownership and a significant Social Security-dependent population.

3,369

population

9.24

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

31328 ZIP code map

Cities in ZIP code 31328

Below are the cities the US Postal Service accepts for ZIP code 31328. Using any city not on this list may result in mail delivery delays.

City	Status
Tybee Island	Acceptable
Tybee Island	Preferred

Nearby ZIP codes

31410 Savannah (4.5 mi) 31411 Savannah (9.8 mi) 31404 Savannah (10.4 mi) 31406 Savannah (12.3 mi) 31401 Savannah (12.6 mi) 29928 Hilton Head Island (13.6 mi) 31421 Savannah (13.8 mi) 29910 Bluffton (15.2 mi) 31415 Savannah (16.2 mi) 29926 Hilton Head Island (16.5 mi) 31405 Savannah (17.2 mi) 29927 Hardeeville (18.9 mi)

Demographics updated 06/2026

Population
Total population	3,369
Population density	365 / sq mi
State FIPS	13
County FIPS	051

Geography
Land area	9.24 sq mi
Water area	1.13 sq mi
Latitude	32.0077
Longitude	-80.8767
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	26.5%	43.4%	41.5%
$50k – $100k	26.5%	30.8%	30.3%
$100k – $200k	36.9%	19.7%	21.2%
Over $200k	10.1%	6.0%	7.1%

Demographics & statistics

3,369

Population

365

People per sq mi

61.0

Median age

$99,729

Median household income

$51,191

Per capita income

$567,400

Median home value

$1,227

Median monthly rent

90.5%

Home ownership

4.1%

Poverty rate

4.2%

Unemployment

3,311

Housing units

49.9%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

25–34

144

35–44

162

180

45–54

202

183

55–59

207

153

60–64

172

392

65–74

443

141

75–84

159

119

85+

135

← Male

Female →

Age summary

Group	Count	%
Under 18	399	11.8%
18 and over	2,970	88.2%
65 and over	1,389	41.2%
Median age	61.0 years

Race & ethnicity

White 92.6%

Black or African American 3.2%

Two or more races 2.9%

Hispanic or Latino 0.9%

Other race 0.4%

Group	Count	%
White	3,147	92.6%
Black or African American	110	3.2%
Two or more races	99	2.9%
Hispanic or Latino	31	0.9%
Other race	13	0.4%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	26.5%	43.4%	41.5%
$50k – $100k	26.5%	30.8%	30.3%
$100k – $200k	36.9%	19.7%	21.2%
Over $200k	10.1%	6.0%	7.1%

Under $10k 4.6%

$10k–$15k 1.7%

$15k–$25k 3.0%

$25k–$35k 8.9%

$35k–$50k 7.5%

$50k–$75k 9.7%

$75k–$100k 15.1%

$100k–$150k 27.6%

$150k–$200k 10.3%

$200k+ 11.7%

Range	% of households
Under $10k	4.6%
$10k–$15k	1.7%
$15k–$25k	3.0%
$25k–$35k	8.9%
$35k–$50k	7.5%
$50k–$75k	9.7%
$75k–$100k	15.1%
$100k–$150k	27.6%
$150k–$200k	10.3%
$200k+	11.7%
Median income	$99,729

Housing

Home values

Under $50k 0.8%

$50k–$100k 0.5%

$100k–$150k 2.4%

$150k–$200k 1.3%

$200k–$300k 2.3%

$300k–$500k 32.7%

$500k–$1M 52.1%

$1M+ 7.9%

Housing overview

Metric	Value
Median home value	$567,400
Median rent / month	$1,227
Owner occupied	90.5%
Renter occupied	9.5%
Vacant	54.4%
Single-family detached	68.7%
Large apartment buildings	9.1%
Mobile homes	0.3%
Median rooms	5.5
Avg household size (owned)	2.02

Year built

Era	%
2020 or later	0.0%
2010–2019	4.4%
2000–2009	22.1%
1990–1999	14.8%
1980–1989	17.8%
1970–1979	7.9%
1960–1969	7.9%
1950–1959	12.8%
1940–1949	3.1%
1939 or earlier	9.3%

Bedrooms

Size	% of units
No bedroom (studio)	1.2%
1 bedroom	5.3%
2 bedrooms	23.0%
3 bedrooms	50.9%
4 bedrooms	13.8%
5+ bedrooms	5.8%

Vehicles per household

Vehicles	% of households
No vehicle	1.6%
1 vehicle	29.8%
2 vehicles	46.5%
3 or more	22.1%

Heating fuel

Fuel type	%
Electricity	94.6%
Propane / LP gas	4.1%
Solar	0.6%
No fuel used	0.7%

Households & families

Household type	Count	%
Married-couple family	1,009	64.0%
Cohabiting couple	63	4.0%
Male householder, no spouse	182	11.5%
Female householder, no spouse	323	20.5%
Households with children under 18	257	16.3%
Households with seniors (65+)	832	52.8%
Average household size	2.06

Marital status

Status	Male	Female
Never married	17.1%	24.5%
Married	70.9%	61.2%
Separated	1.2%	1.2%
Widowed	1.5%	5.7%
Divorced	9.3%	7.5%

Education

Less than 9th grade 0.2%

Some HS, no diploma 2.4%

HS graduate 27.6%

Some college, no degree 16.3%

Associate's degree 3.5%

Bachelor's degree 26.2%

Graduate / professional 23.7%

Metric	%
HS diploma or higher	97.3%
Bachelor's or higher	49.9%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	74	16.8%
Kindergarten	51	11.6%
Elementary school	89	20.2%
High school	163	37.0%
College / grad school	63	14.3%

Employment

Industry of employment

Education & healthcare 26.1%

Arts, food & hospitality 18.4%

Professional & management 12.4%

Finance & real estate 11.5%

Manufacturing 8.9%

Transportation & utilities 7.0%

Public administration 4.5%

Construction 4.3%

Other services 2.8%

Retail trade 2.5%

Wholesale trade 1.6%

Occupation

Category	%
Management, business & arts	57.5%
Service	18.6%
Sales & office	12.1%
Natural resources & construction	0.7%
Production & transportation	11.1%

Employment type

Type	%
Private sector	79.8%
Government	13.2%
Self-employed	7.0%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	71.5%
Carpool	3.9%
Public transit	0.0%
Walk	3.6%
Work from home	17.7%
Other means	3.3%
Avg commute (minutes)	28.3

Poverty

All people 4.1%

Under 18 years 6.0%

18 and over 3.9%

Married-couple families 0.0%

Female-led households 0.0%

Income support

Source	% of households
Social Security	56.9%
Retirement income	46.4%
Supplemental Security	0.0%
Cash public assistance	0.8%
Food stamps / SNAP	0.8%

Health indicators

Condition	%
Obesity	29.6%
High blood pressure	36.9%
High cholesterol	38.5%
Diabetes	11.1%
Heart disease	7.4%
Stroke	3.1%
Asthma	8.5%
Arthritis	30.6%
Kidney disease	3.2%
Pulmonary disease	6.5%
Cancer	8.8%

Behavior / access	%
Smoking	12.3%
Binge drinking	14.3%
No physical activity	20.3%
Less than 7 hrs sleep	30.3%
Depression	18.3%
Fair or poor health	12.2%
Poor mental health	12.4%
Poor physical health	9.7%
No health insurance	12.4%
Visited doctor (checkup)	80.8%
Visited dentist	73.9%
Cholesterol screening	94.3%
Teeth loss	9.7%

Veterans & disability

Veterans	Count	%
Civilian veterans	312	10.5%

Disability	%
Any disability	16.5%
Under 18	4.8%
18–64 years	6.8%
65 and over	31.8%

Health insurance coverage

Type	%
Private insurance	58.8%
Public insurance	40.8%
No insurance	12.7%
Uninsured under 19	18.5%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	3,234	96.0%
Spanish	0	0.0%
Other Indo-European	0	0.0%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	3,259	96.7%
Born in same state	3,251	96.5%
Born in different state	1,664	49.4%
Foreign born	8	0.2%
Naturalized citizen	110	3.3%
Not a US citizen	85	77.3%

Ancestry

Ancestry	Count	%
French	428	12.7%
Italian	403	12%
Arab	200	5.9%

Ancestry	Count	%
Irish	51	1.5%
German	11	0.3%
Polish	11	0.3%

Technology access

Metric	% of households
Computer access	46.8%
Internet access	97.7%

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

Frequently asked questions about ZIP code 31328

What city is ZIP code 31328 in?

ZIP code 31328 is primarily assigned to Tybee Island, Georgia.

What county is ZIP code 31328 in?

ZIP code 31328 falls within Chatham County, Georgia.

Does ZIP code 31328 have an older population?

41% of residents in ZIP code 31328 are 65 or older, above the national average of ~17%.

Does ZIP code 31328 have a large retiree population?

57% of households in ZIP code 31328 receive Social Security income, suggesting a significant retiree or disability population.

Is ZIP code 31328 mostly owner-occupied?

91% of occupied units in ZIP code 31328 are owner-occupied, well above the national average.

How educated is the population of ZIP code 31328?

50% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.

What timezone is ZIP code 31328 in?

ZIP code 31328 observes the EST timezone.