Glynn County, Georgia · Brunswick
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With 17% of homes built before 1960 and about 0 hard-freeze nights a year, frozen and split pipes are a leading winter risk in the county.
Basements flood here mostly in September. Glynn County averages 9.3 days a year with an inch of rain or more.
17% of homes here predate 1960, when clay and cast iron sewer laterals were standard. Roots and cracks in those lines are a common cause of backups.
Glynn County's wettest day in the 2015–2024 record brought 5.53 inches.
3% of occupied homes in Glynn County heat mainly with wood or propane, below the Georgia county median of 7.1%.
Muggy summer nights, lows of 65°F or more, come about 156 times a year in Glynn County. Mold after a leak spreads fastest from June through August.
Local risk profile
About 85,447 people live in Glynn County, 420 square miles in southeast Georgia, in roughly 43,500 homes. The county seat is Brunswick, and St. Simons, Country Club Estates and Dock Junction round out the largest towns. Much of its housing is recent, with a median build year of 1988.
38/100 Water Damage Risk Index: Moderate Glynn County ranks 134 of 159 Georgia counties. See the statewide ranking and method.The three factors where Glynn County ranks highest compared with other Georgia counties.
Winters here are on the gentler end for Georgia, and pipes still freeze. It averaged 7 freezing nights a year over 2015–2024, 0 of them at 20°F or colder, cold enough for pipes in outside walls and crawl spaces to freeze. Among 159 Georgia counties that's 117th.
Hard freezes are uncommon here, about 7 nights a year at or below 32°F, and that's exactly why they do damage: pipes in attics, exterior walls and slab-edge plumbing are rarely insulated. The coldest night in the record was about 24°F on January 19, 2018.
Glynn gets fewer downpours than most Georgia counties, but they still fill basements. Of roughly 49.4 inches of yearly precipitation, the damage comes from the 9.3 days a year with an inch or more, ranked 155th of 159. June, August and September see the most. The single wettest day in the record: 5.53 inches, October 8, 2016. The worst three-day stretch dropped 6.9 inches, ending August 8, 2024, the kind of soaking that overwhelms sump pumps and storm sewers.
Housing
Georgia's 159 counties range widely in housing age; Glynn ranks 84th, with 37% of its homes built before 1980.
Housing age is mixed: 17% of homes are pre-1960 and 29% are 2000 or newer. Ask any plumber which era your house is from and you'll know which failures to watch for.
About 34% of homes went up between 1980 and 1999. Some houses from the late 1970s to the mid-1990s were plumbed with polybutylene, a gray plastic pipe known for failing at fittings. A plumber can tell you in a few minutes whether you have it.
Manufactured and mobile homes make up 10% of the housing here. Water lines in the underbelly depend on intact skirting and working heat tape, and they're usually the first to freeze in a cold snap.
With 18% of homes empty at survey time, landlords and seasonal owners should shut off the main or schedule checks in winter. An unheated vacant house is also where many policies limit freeze coverage.
Beyond water
About 156 nights a year in Glynn County stay at 65°F or warmer, a sign of muggy summer air (1st of 159 counties). August is the wettest month. Keep indoor humidity under 60%, as the EPA advises, and dry any leak within 24 to 48 hours; in a humid month a wet basement left alone won't dry by itself.
Mold remediation: what to expectBy main heating fuel, Glynn County homes break down as 10% utility gas, 86% electric, 2% propane and under 1% wood. Most homes here heat with gas or electricity, so cooking and electrical faults are the likelier fire sources. Even a contained kitchen fire can send soot through the ductwork to every room.
Fire and smoke cleanup: first stepsCoverage
Calls connect to restoration companies that work across Glynn County. The largest communities by population:
Population from ACS 2020-2024 5-year estimates. Townships and unincorporated areas are covered too.
Nearby
Glynn gets more pipe-freeze nights than any of its neighbors. All of its neighbors see more heavy-rain days. Its housing is the oldest in the area by share of homes built before 1980.
By the numbers
| Factor | Glynn | Georgia median | Rank |
|---|---|---|---|
| Homes built before 1960 | 17% | 15% | 63 of 159 |
| Homes built before 1980 | 37% | 38% | 84 of 159 |
| Homes built 2000 or later | 29% | 27% | 68 of 159 |
| Manufactured or mobile homes | 9.7% | 21% | 119 of 159 |
| Vacant homes | 18% | 14% | 45 of 159 |
| Wood or propane heat | 2.7% | 7.1% | 133 of 159 |
| Nights at 20°F or colder | 0/yr | 2/yr | 117 of 159 |
| Days with 1 inch+ of rain | 9.3/yr | 12/yr | 155 of 159 |
| Freeze-thaw days | 7/yr | 29/yr | 157 of 159 |
| Muggy nights (65°F+) | 156/yr | 112/yr | 1 of 159 |
Rank 1 is the highest value. Bars run from the lowest to the highest Georgia county; the tick marks the median; orange means higher water damage risk than the median, green means lower.
Questions
Peak risk months in Glynn County: freezing from midwinter, heavy rain in June, August and September.
Sources: U.S. Census Bureau, ACS 2024 5-year estimates (2020-2024); weather from NOAA nClimGrid-Daily county averages (EpiNOAA), 2015–2024, averaged across the county; county boundaries from Census TIGER. Reviewed 2026-10-21. Methodology