Wilmington Island is the stop between Savannah and Tybee, and it is a different kind of purchase from either. It is not a city, it is not downtown, and it is not a beach town. It is an unincorporated island of about 8 square miles where the county, not a city hall, sets the rules and provides the services. That one fact changes who you call, what your flood insurance costs and which permit desk you deal with.
Key Takeaways
– Wilmington Island is a census-designated place, meaning it is unincorporated and governed by Chatham County rather than a city.
– The typical home dates from 1984, and the median value is $404,900.
– Average commute is 28.3 minutes, and roughly 77 percent of occupied homes are owner-occupied.
– Unincorporated Chatham participates in FEMA’s Community Rating System, which discounts flood premiums.
Where is Wilmington Island and how big is it?
East of Savannah on the road toward Tybee. The Census Bureau records it as “Wilmington Island CDP” with 8.302 square miles of land and 1.345 square miles of water (U.S. Census Bureau 2024 Gazetteer). For scale, that is nearly three times the land area of Tybee Island city, which the same file puts at 2.881 square miles.
The population is 13,905 (American Community Survey 2020-2024). So it is a substantial community, larger than most people assume from driving through it.
What does “unincorporated” actually mean here?
It means there is no city government. A census-designated place is the Census Bureau’s unit for a community that is not incorporated, which is why Wilmington Island appears in the Gazetteer as a CDP rather than a city the way Tybee Island does.
The practical consequence is that Chatham County is your local government. The county’s own flood guidance is published for “Unincorporated Chatham County Residents,” and the county runs its building, zoning and flood programs for the island directly (Chatham County Department of Engineering). If you are used to calling a city hall about a permit, a tree or a short-term rental question, the answer here comes from the county instead.
What is the housing stock like?
Middle-aged and mostly owner-occupied. The median year a home was built is 1984 (American Community Survey), which puts the typical house squarely in the era before current wind and flood construction standards, and old enough that systems have usually been replaced at least once.
There are 6,429 housing units, of which 4,577 are owner-occupied and 1,369 renter-occupied, and the median value of an owner-occupied home is $404,900 (American Community Survey). That works out to roughly 77 percent of occupied units being owner-occupied, which matters mostly because a high ownership share tends to mean less turnover and fewer listings in a given year.
Treat the median value as orientation, not a price. It is a survey estimate across five years of data and every waterfront or marsh-front lot here deviates from it in one direction or the other.
How long is the commute?
Mean travel time to work is 28.3 minutes (American Community Survey). That is longer than most of the west-side suburbs and shorter than people expect from an island.
The number that average hides is the one that matters: there is essentially one road on and off, US 80, and the drive behaves very differently at 7:45 on a weekday than at noon. Beach traffic on a warm Saturday is its own category. Drive your actual route at your actual hour before you decide the average describes your life.
What should you know about flood zones and insurance?
More than anywhere inland, and the county gives you a real head start. Chatham County explains the trigger plainly: “The Federal Government passed a law making it mandatory for owners to obtain a Flood Insurance policy if the structure is in a Special Flood Hazard Area (SFHA) and the loan is Federally backed” (Chatham County).
There is good news attached. “Unincorporated Chatham County participates in FEMA’s Community Rating System (CRS),” a voluntary program that discounts premiums for properties in mandatory-insurance zones. The county reports the scale of it: “Unincorporated Chatham County saved 12,136 flood insurance policy holders in the SFHA a total of $2,455,756 on premiums last year, or an average of $202 per policy.”
One caution on the discount itself. The county’s page states the CRS discount as 20 percent in one paragraph and 25 percent in another, so do not rely on either figure. Ask your insurance agent for the county’s current CRS class and the discount that applies to the specific address.
The document that decides your premium is the elevation certificate. The county calls it “an important administrative tool used by the National Flood Insurance Program (NFIP) to properly rate homes for flood insurance policies.” Ask the seller whether one exists before you go under contract. On a 1984-median housing stock, many homes have one on file and some do not, and getting one after the fact is slower and more expensive than getting a copy.
What is nearby?
Fort Pulaski National Monument sits just east of the island at “41 Cockspur Island Road / Savannah, GA 31410” (National Park Service). Entry is “$10.00” and is “valid for seven consecutive days from the date of purchase,” or “$35.00” for an annual pass that “provides entry into Fort Pulaski National Monument for the pass holder and 3 other adults” (National Park Service).
Beyond that is Tybee. If the beach is a large part of why you are looking here, compare the two directly: our Tybee Island community page and the Tybee Island buying guide cover what changes when you buy on the island itself. For deep-water and dock questions, which come up constantly here, see our guide to waterfront and deep-water homes in coastal Georgia. Working in the city instead, the Savannah and Hunter Army Airfield community page gathers those links.
Frequently asked questions
Is Wilmington Island part of Savannah?
No. The Census Bureau records it as a census-designated place, its unit for an unincorporated community, so it has no city government of its own. Chatham County provides local government services and runs the building, zoning and flood programs there. Tybee Island, by contrast, is an incorporated city.
How much are homes on Wilmington Island?
The Census Bureau’s 2020-2024 estimates put the median value of an owner-occupied home at $404,900 across 6,429 housing units. That is a five-year survey estimate for the whole island rather than a current sale price, so use it for orientation and price any offer from recent comparable sales.
Is flood insurance required on Wilmington Island?
It depends on the specific address. Federal law makes flood insurance mandatory where a structure sits in a Special Flood Hazard Area and the loan is federally backed. Unincorporated Chatham County participates in FEMA’s Community Rating System, which discounts premiums in those zones. Check the flood zone and the elevation certificate per address.
How old are the houses?
The median year built is 1984 in the Census Bureau’s 2020-2024 estimates. That means the typical home predates current wind and flood construction standards, so roof age, elevation and whether an elevation certificate exists are worth confirming before you write an offer.
Before you make an offer here
Three things to check per address rather than per island: the flood zone and whether an elevation certificate exists, the actual commute at the hour you would drive it, and which county desk handles the permit you might need. None of them are expensive to check beforehand and all three are expensive to discover afterward.
When you want those pulled for a specific Wilmington Island address, get in touch.