Glynn County area

Population and density of Glynn County

The Census Bureau estimates that 87,599 people lived in Glynn County on July 1, 2025. That ranks #688 of 3,222 county equivalents nationally and #31 of 159 in Georgia. Since the April 1, 2020 estimates base of 84,500, the population has grown by 3,099 (+3.7%), compared with +5.5% for Georgia as a whole.

With 419.6 square miles of land, that is 209 people per square mile (81 per km²), placing Glynn County #624 nationally for density and #34 in Georgia. The median county equivalent has 47 people per square mile; the Georgia median is 69. Put another way, there are about 3.1 acres of land per resident.

U.S. Census Bureau, Vintage 2025 population estimates. Estimates are revised each year and are not decennial census counts. Density divides the whole population by the whole county’s land area, so it describes an average, not how settlement is distributed within the county. Population sources and methods.

Cities and towns in Glynn County

1 incorporated place lies at least partly in Glynn County. Together they are home to 15,730 people (18%); the other 71,869 (82%) live outside any incorporated place, in unincorporated communities and rural areas.

The largest is Brunswick city, with 15,730 residents in the county.

Metropolitan area

Glynn County is a central county of the Brunswick-St. Simons, GA Metropolitan Statistical Area. Its 3 county equivalents have 118,524 residents on 1,294.2 square miles of land; Glynn County accounts for 32.4% of the land and 73.9% of the residents. By combined land it ranks #242 of 393 metropolitan areas, and #340 by population.

ZIP codes

9 ZIP Code Tabulation Areas have land in Glynn County; 7 of them have most of their land inside the county, and the others mainly cover neighboring areas.

315203152231523315243152531527315433156131566

ZIP Code Tabulation Areas are the Census Bureau’s approximations of USPS ZIP Code service areas, from the 2020 Census relationship files. Lighter codes have less than half of their land in this county. Post-office-box and single-address ZIP Codes have no tabulation area.

Counties bordering Glynn County

Glynn County shares a land border with 4 county equivalents. Each of them has more land than Glynn County. The largest neighbor is Wayne County (641.8 mi²) and the smallest is McIntosh County (431.3 mi²). Together with its neighbors, Glynn County forms a block of 2,566.3 mi² of land, of which it holds 16.4%.

How big is Glynn County compared with U.S. states?

Glynn County has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 2.5 times as much. Georgia’s county land could hold about 138 areas the size of Glynn County.

Another way to picture it: the same land area would fill a square about 20.5 miles (33 km) on each side. Real county shapes are rarely square, so this is a scale reference rather than a width or driving distance.

State figures are the sums of each state’s county-equivalent land measurements in the same Census release, so states and counties are compared on the same basis. Published state totals can differ slightly because of rounding. Compare all states · Counties bigger than entire states.

What stands out about Glynn County?

Glynn County has more land than 807 of the other 3,221 county equivalents in the dataset.

A median is the middle county-equivalent measurement, not the average of the largest and smallest. All three bars use the same linear scale. Very small areas may appear as a thin sliver; the labels retain their values.

Does including water change its rank?

Using land plus water places Glynn County at #1,803 nationally by total area, 612 places closer to the top than its land rank. The water assigned to this geography moves it ahead of some county equivalents with more land.

Its water share is 28.3%, compared with a national county-equivalent median of 1.2% — 27.1 percentage points higher. This describes the statistical geography’s land/water mix, not flood exposure or developable land.

Closest positions in the national land ranking

These entries sit immediately beside Glynn County in the national ranking. They can be in different states and are not necessarily geographic neighbors.

Calculated from the same Census release as the area table. Total-area order uses original ALAND + AWATER; water shares and chart labels use published square miles. Calculation details.