US ZIP Code
31561

Sea Island, GA

Glynn County  ·  Georgia

● Active
👥 94 Population ↑ 100% since 2019
💰 $144,375 Median HH Income
▲ 89% above avg
🎂 72.1 Median Age ↑ 4% since 2019
🏠 $2,000,000+ Median Home Value
▲ 617% above avg
🎓 100.0% College Grads
▲ 158% above avg
📊 0.0% Unemployment
▼ 100% below avg
ZIP Code Details
ZIP Code31561
CitySea Island
StateGeorgia (GA)
CountyGlynn County
Area Code912
Elevation5 ft
Latitude31.209066
Longitude-81.309933
TimezoneNew York (DST)
FIPS13127
ZIP TypePO Box
StatusActive
People & Population (ACS 2023)
♂ Male 35.1% (33) Female 64.9% (61) ♀

Race & Ethnicity

White: 100%Race
White100.0%

Age Breakdown

65+
72%

Key Indicators

Median Age72.1 yrs ↑ 4% since 2019
Avg Household Size1.54
Below Poverty0.0% ▼ 100% below avg
College Grads100.0% ▲ 158% above avg
Unemployment0.0% ▼ 100% below avg
Graduate Degree68 (100%)

Education

Graduate: 100%Edu
Graduate100.0%
Housing & Income

Housing Tenure

Owner: 100%Tenure
Owner100.0%

Home Value Distribution

Over $500k
100%

Financials

Median HH Income$144,375 ▲ 89% above avg
Median Home Value$2,000,000+ ▲ 617% above avg
Home/Income Ratio13.9x (nat avg ~3.5x)
Total Units466
Vacant Units405
Avg HH Size1.54

Income Distribution

$75k–100k
18%
$100k–150k
43%
$150k–200k
20%
Over $200k
20%
Employment & Commute

How People Get to Work

Drove Alone
100%

Commute Time

15–30 min
100%
Housing Stock

Year Built

1940s–1950s
9%
1960s–1970s
31%
1980s–1990s
10%
2000+
50%

Summary

Total Units466
Vacant405
Owner Occupied100.0%
Renter Occupied0.0%
Avg HH Size1.54
Frequently Asked Questions
ZIP code 31561 is in Sea Island, GA, in Glynn County.
ZIP code 31561 is located in Georgia (GA).
ZIP code 31561 is in Glynn County, GA.
ZIP 31561 observes the New York timezone. Daylight Saving Time is observed.
The estimated population of ZIP code 31561 is 94 people (ACS 2023).
The median household income in ZIP code 31561 is $144,375 (ACS 2023).
The median home value in ZIP 31561 is $2,000,000+ (ACS 2023).
About ZIP Code 31561

ZIP code 31561 is located in Sea Island, Georgia, within Glynn County. With a population of 94, this is a sparsely populated ZIP code with an older community — the median age is 72.1 years. Economically, 31561 is a upper-middle-income ZIP code: the median household income of $144,375 is significantly above the national average.

Real estate in ZIP code 31561 represents among the most expensive housing markets in the country. The median home value of $2,000,000+ is more than double the national average.

The population of 31561 is primarily White (100.00%). Residents are highly educated — 100.0% hold a bachelor's degree or higher, which is more than double the national average.

Overall, ZIP code 31561 in Sea Island, GA is characterized as upper-middle-income, highly educated, an older community, and predominantly owner-occupied. With 94 residents, a median household income of $144,375, and a median home value of $2,000,000+, it offers a clear picture of life in this part of Georgia.