Sea Island, GA demographics:
population, income, and more

Total population
96
2.1% year-over-year change
Median household income
$250,001/yr
73.2% year-over-year change
Housing units
373
-20.0% year-over-year change

Sea Island population

How many people live in Sea Island

Sea Island is home to 96 residents, according to the most recent Census data. Gender-wise, 51% of Sea Island locals are male, and 49% are female.

Total population
96
2.1% year-over-year change
Gender ratio
Male
51%
49
Female
49%
47
Value Percent YoY change
Male 49 51% 48.5%
Female 47 49% -22.9%
A higher population often means more rental variety and livelier areas. The gender balance—how many men live here compared to women—can reveal a lot about the community and the lifestyles of its residents. Use this info to get a sense of the area's pace and personality.

Age demographics

The median age in Sea Island is 70, with the population distributed as follows: about 10.4% are children under 15, then 9.4% are in the 15 to 24 age group. Finally, around 59.4% are 65 or older.

Median age
69.6
Age breakdown
Under 15
10.4%
15 to 24
9.4%
25 to 44
0%
45 to 64
20.8%
Over 65
59.4%
Value Percent YoY change
Under 15 10 10.4% N/A
15 to 24 9 9.4% N/A
45 to 64 20 20.8% N/A
Over 65 57 59.4% -39.4%
The age composition helps you get insight into who lives in the area. A younger population might mean a more active, fast-paced vibe, while an older one could suggest a quieter, slower lifestyle. If there's a balanced makeup, you’re likely to find a variety of services, housing types, and community spaces that cater to different life stages.

Racial makeup

Citizenship
U.S.-born citizens
100%
Non-U.S.-born citizens
0%
Non-citizens
0%
Value Percent YoY change
U.S.-born citizens 96 100% 2.1%
Racial breakdown
White
100%
Black or African American
0%
American Indian and Alaska Native
0%
Asian
0%
Native Hawaiian and other Pacific Islander
0%
Two or more races
0%
Other
0%
Value Percent
White 96 100%

Households in Sea Island

A peek inside Sea Island households

Sea Island has 40 households, with an average of 2 members in each.

Households stats

Total households
40
-34.4% year-over-year change
Average people per household
2
Non-family households
Family households
40
Value Percent YoY change
Family households 40 100% 14.3%
The mix between family and non-family households gives a glimpse into daily life. A higher percentage of families might mean more parks and schools, while more non-family setups can mean flexible housing and diverse living styles. For renters, this can signal what kinds of homes are common and can help you figure out if the area matches your lifestyle.

Housing in Sea Island

The housing landscape of Sea Island

Sea Island's housing consists of 373 units, with 67.8% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 32.2% and offer a more compact, shared living style.

Housing units
373
-20.0% year-over-year change
Housing types
Value Percent
1 unit, detached 253 67.8%
1 unit, attached 120 32.2%
Homes built since 2020
% year-over-year change

The age of buildings in Sea Island

In Sea Island, the median construction year is 1983. Most development happened in the second half of the 20th century.

Construction year breakdown by decade
Value Percent YoY change
Built between 1950 and 1959 128 34.3% -1.5%
Built between 1970 and 1979 52 13.9% -38.8%
Built between 1980 and 1989 19 5.1% 58.3%
Built between 1990 and 1999 10 2.7% -16.7%
Built between 2000 and 2009 95 25.5% -39.9%
Built between 2010 and 2019 69 18.5% 0.0%
As a renter, knowing when homes were built helps you understand the potential condition and design of rental units. Newer builds may have more contemporary layouts, while older homes can offer character or larger lots, depending on the area.

Sea Island occupancy rates

Meanwhile, 89.3% of all homes on the local market sit vacant.

Occupied housing units
40
-34.4% year-over-year change
Occupancy breakdown
Renter occupied
Owner occupied
40
Value Percent YoY
change
Owner occupied 40 100% -34.4%
Unoccupied housing units
89.3%
Unoccupied housing units refer to homes that are currently without residents—whether they're waiting for renters or owners, used seasonally, or simply unclaimed. A higher share of empty homes may mean more housing availability, while a low number can reflect a tighter market with more competition. This, along with the renter-vs.-owner mix, helps paint a clearer picture of what types of housing and services are likely to be available in the area.

Sea Island housing costs

Median housing costs per month
$3,050/month
This figure sums up typical monthly housing costs for all households in the area. If you own, it includes mortgage payments in addition to property taxes, insurance and HOA fees. If you rent, it accounts for rent plus extras like utilities. It’s useful for seeing how local living expenses stack up compared to other places.

Education in Sea Island

Sea Island education at a glance

Meanwhile, 64.9% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
Bachelor's degree 27 35.1% 12.5%
Graduate degree 50 64.9% 13.6%
A community’s education mix can offer insights into the local economy and housing market. Higher levels of education often align with more job opportunities and stable incomes, which can increase demand for homes and influence both rent prices and rental availability.

Income in Sea Island

How much people earn in Sea Island

The average annual household income in Sea Island was $460,770 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +187.3% change from the previous year. At the same time, the median income stood at $250,001, reflecting a +73.2% shift over the same period.

Average household income in Sea Island
$460,770/year
187.3% year-over-year change
Median household income in Sea Island
$250,001/year
73.2% year-over-year change

Sea Island income by age

Overall, 100% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change

Employment in Sea Island

Workforce and job types in Sea Island

Workforce demographics

White collar
19
Blue collar
Value Percent YoY change
White collar 19 100% 72.7%
Employer type
Self employees
0%
Private companies
100%
Governmental workers
0%
Not for profit companies
0%
Value Percent YoY change
Private companies 19 100% 72.7%

Transportation in Sea Island

How people get around in Sea Island

Means of transportation
Value Percent YoY change
Car 19 100% 72.7%
Understanding how locals get to work can help you plan your own routine. High car usage might mean you’ll need a vehicle, while strong public transit or walkability could save you the hassle. Commute times also play a big role in quality of life—shorter trips can give you more time for the things you enjoy.

What is the median and average household income in Sea Island by zipcode?

Zipcode Population Number of households Median income Average income
31561 96 40 $250,001 $460,770

Explore more communities

FAQs about Sea Island demographics 

What is the total population of Sea Island?

Sea Island has a total population of 96 residents, according to the latest release from the U.S. Census Bureau: the 2019-2023 American Community Survey (ACS) 5-year estimates. This figure changed by +2.1% compared to a year ago.

What is the gender ratio in Sea Island?

The gender ratio in Sea Island is as follows:
  • 51% males (49 residents)
  • 49% females (47 residents)

What is the median age in Sea Island?

The median age in Sea Island is 69.6.

What is the age distribution of the population in Sea Island?

The age distribution in Sea Island is as follows:
  • Under 15: 10.4% (10 residents)
  • Ages 15-24: 9.4% (9 residents)
  • Ages 25-44: 0% ( residents)
  • Ages 45-64: 20.8% (20 residents)
  • Over 65: 59.4% (57 residents)

What is the racial and ethnic makeup of Sea Island?

The racial and ethnic makeup of Sea Island is as follows:
  • White: 100% (96 residents)
  • Black or African American: 0% ( residents)
  • American Indian and Alaska Native: 0% ( residents)
  • Asian: 0% ( residents)
  • Native Hawaiian and Other Pacific Islander: 0% ( residents)
  • Two or More Races: 0% ( residents)
  • Other: 0% ( residents)

What percentage of the population in Sea Island are U.S.-born citizens?

U.S.-born citizens represent 100% of the population in Sea Island.

How many housing units are there in Sea Island?

There are 373 housing units in Sea Island, reflecting a -20.0% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in Sea Island and what is the average household size?

Sea Island has a total of 40 households, with an average of 2 people in each.

What is the median household income in Sea Island?

Sea Island has a median household income of $250,001, representing a +73.2% shift from the previous year, according to the U.S. Census Bureau.

What is the job market overview for Sea Island?

Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 100% (19 residents)
  • Blue-collar workers: 0% ( residents)

Places of employment:
  • Self-employed: 0% ( residents)
  • Private companies: 100% (19 residents)
  • Governmental workers: 0% ( residents)
  • Not-for-profit companies: 0% ( residents)

Data source & methodology

The demographic data on this page was sourced from the latest U.S. Census Bureau release—the 2019–2023 American Community Survey (ACS) 5-year estimates.

The information, issued annually, is compiled and published by the Point2Homes Research Team as soon as new data becomes available.

No representation, guarantee, or warranty is made concerning the accuracy or completeness of modified or aggregated information for particular areas.

Page last updated: September 2025