Sea Island, GA (31561) housing scorecard.
20 homes for sale in 31561 right now, median $7,940,000 · all 19 homes for sale in Sea Island
As of 2026-09-24, the typical home in Sea Island, GA (31561) is worth $4,492,809, up about 7.2% a year over five years; the Momentum Market Score is 2/100 (expensive against incomes and tight for buyers). Data from Zillow, Realtor.com and the U.S. Census; score by Momentum Realty.
Home value, rent, cap rate, 5-year growth, price versus incomes and our 0 to 100 Momentum Market Score for ZIP 31561, free.
The typical home costs about 31.12 times the local median income, about 688.8% richer than the Georgia norm, so value is stretched here. Values are up roughly 7.2% a year over the last five years. Owning the typical home at today's 6.95% 30-year rate takes about 197.8% of a median income in principal and interest, the affordability squeeze in one number.
Typical home value, last 13 months
What drives the score
Each bar ranks this ZIP against every other Georgia ZIP (0 = lowest, 100 = highest) on that input, then weighted into the score. Full methodology.
Common questions
Is Sea Island, GA (31561) a buyer's or seller's market?
By the Momentum Market Score, Sea Island, GA (31561) reads frothy (2 out of 100), meaning it is expensive against incomes and tight for buyers. The score blends value versus incomes, price cuts, inventory growth, affordability and rent yield.
What is the typical home value in Sea Island?
About $4,492,809 (Zillow Home Value Index, 2026-09-24), up roughly 7.2% a year over five years.
Where does this data come from?
Zillow Research (home value, rent), Realtor.com (days on market, listings), U.S. Census (income, population), Freddie Mac via FRED (rate). Score and derived metrics by Momentum Realty, methodology here.
Data: Zillow Research, Realtor.com, U.S. Census Bureau ACS, and Freddie Mac 30-Year Fixed Rate Mortgage Average [MORTGAGE30US] via FRED. Score by Momentum Realty.
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