County outline
Where Brantley County is located
Area breakdown
Land accounts for 99.1% of Brantley County’s measured area and water for 0.9%. Its combined area converts to 1,158.3 square kilometers or approximately 286,213 acres.
Green: land · blue: water
| Measurement | Square miles | Square kilometers | Acres |
|---|---|---|---|
| Land | 443.241 | 1,147.989 | 283,674.2 |
| Water | 3.967 | 10.274 | 2,538.9 |
| Total | 447.208 | 1,158.263 | 286,213.1 |
How Brantley County compares
By original Census land area, Brantley County ranks #41 of 159 in Georgia and #2292 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.
Its land area is 1.293 times the Georgia county-equivalent median of 342.7 square miles. It accounts for 0.8% of the combined county land area in the state.
See the complete Georgia ranking · What counts as a county equivalent?
Population and density of Brantley County
The Census Bureau estimates that 18,936 people lived in Brantley County on July 1, 2025. That ranks #1,941 of 3,222 county equivalents nationally and #99 of 159 in Georgia. Since the April 1, 2020 estimates base of 18,024, the population has grown by 912 (+5.1%), compared with +5.5% for Georgia as a whole.
With 443.2 square miles of land, that is 43 people per square mile (16 per km²), placing Brantley County #1,693 nationally for density and #102 in Georgia. The median county equivalent has 47 people per square mile; the Georgia median is 69. Put another way, there are about 15 acres of land per resident.
| July 1 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|
| Estimate | 18,046 | 18,119 | 18,173 | 18,391 | 18,694 | 18,936 |
| Change | — | +73 | +54 | +218 | +303 | +242 |
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 Brantley County
2 incorporated places lie at least partly in Brantley County. Together they are home to 1,569 people (8.3%); the other 17,367 (91.7%) live outside any incorporated place, in unincorporated communities and rural areas.
The largest is Nahunta city, with 1,059 residents in the county. By land, Hoboken city is the largest at 3.428 mi².
| Incorporated place | Population 2025 | Since 2020 | Land mi² |
|---|---|---|---|
| Nahunta cityCounty seat | 1,059 | +5.1% | 2.819 |
| Hoboken city | 510 | +5.6% | 3.428 |
Population: U.S. Census Bureau Vintage 2025 subcounty estimates, counting only the part of each place inside Brantley County. Land: 2026 Census Gazetteer, for the whole place even where it extends into other counties. How communities are listed.
Metropolitan area
Brantley County is an outlying 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; Brantley County accounts for 34.2% of the land and 16% of the residents. By combined land it ranks #242 of 393 metropolitan areas, and #340 by population.
| County equivalent | Population 2025 | Land mi² |
|---|---|---|
| Glynn County | 87,599 | 419.6 |
| Brantley County | 18,936 | 443.2 |
| McIntosh County | 11,989 | 431.3 |
ZIP codes
6 ZIP Code Tabulation Areas have land in Brantley County; 4 of them have most of their land inside the county, and the others mainly cover neighboring areas.
315033154231543315533155731566
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 Brantley County
Brantley County shares a land border with 6 county equivalents. It has more land than 2 of them. The largest neighbor is Ware County (899.4 mi²) and the smallest is Pierce County (340.5 mi²). Together with its neighbors, Brantley County forms a block of 4,154.9 mi² of land, of which it holds 10.7%.
| Bordering county equivalent | Land mi² | Size vs. Brantley | Compare |
|---|---|---|---|
| Ware County | 899.4 | 2× larger | Compare |
| Charlton County | 780.1 | 1.8× larger | Compare |
| Wayne County | 641.8 | 1.4× larger | Compare |
| Camden County | 630.3 | 1.4× larger | Compare |
| Glynn County | 419.6 | 1.1× smaller | Compare |
| Pierce County | 340.5 | 1.3× smaller | Compare |
How big is Brantley County compared with U.S. states?
Brantley County has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 2.3 times as much. Georgia’s county land could hold about 130 areas the size of Brantley County.
Another way to picture it: the same land area would fill a square about 21.1 miles (33.9 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 Brantley County?
Brantley County has more land than 930 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 Brantley County at #2,353 nationally by total area, 61 places farther from the top than its land rank. Other county equivalents gain more area when their water measurements are included.
Its water share is 0.9%, compared with a national county-equivalent median of 1.2% — 0.3 percentage points lower. 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 Brantley County in the national ranking. They can be in different states and are not necessarily geographic neighbors.
| Land rank | County equivalent | Land mi² | Comparison |
|---|---|---|---|
| #2291 | Marshall County, Indiana | 443.6 | Compare |
| #2292 | Brantley County, Georgia | 443.2 | This county |
| #2293 | Delaware County, Ohio | 443.1 | Compare |
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.
Representative coordinates
The Census internal point is 31.197334, -81.982978. It represents a location inside the geography; it is not necessarily the centroid or the address of a courthouse.
Source and precision
U.S. Census Bureau, 2026 Gazetteer Files, Counties. Original ALAND: 1,147,989,333 m²; AWATER: 10,274,470 m². Rankings use ALAND; exact ties use ascending GEOID. Tables preserve Census-published square miles to three decimals, with conversions based on those values.
Common questions
How big is Brantley County?
Brantley County, Georgia has 443.2 square miles (1,148 km²) of land and 3.967 square miles of water, for a total area of 447.2 square miles. It ranks #2292 of 3,222 U.S. county equivalents by land area.
Is Brantley County the largest county in Georgia?
No. Brantley County ranks #41 of 159 in Georgia by land area. The largest is Ware County, with 899.4 square miles of land.
What counties border Brantley County?
Brantley County shares a land border with Pierce County, Wayne County, Ware County, Charlton County, Camden County, and Glynn County.
What is the population of Brantley County?
The Census Bureau estimates Brantley County had 18,936 residents on July 1, 2025, ranking #1,941 of 3,222 county equivalents. That is 43 people per square mile of land.
What is the county seat of Brantley County?
The county seat of Brantley County is Nahunta.
What cities and towns are in Brantley County?
Brantley County has 2 incorporated places. The most populous are Nahunta city and Hoboken city; 17,367 residents live outside any incorporated place.
Is Brantley County part of a metropolitan area?
Yes. It is an outlying county of the Brunswick-St. Simons, GA Metropolitan Statistical Area, which has 3 county equivalents and 118,524 residents.
How many ZIP codes are in Brantley County?
6 ZIP Code Tabulation Areas have land in Brantley County, and 4 of them have most of their land inside the county. Census ZIP Code Tabulation Areas approximate USPS ZIP Code areas.
How does Brantley County compare with U.S. states?
It has less land than every state. Rhode Island, the smallest, has 2.3 times as much land.
How many acres of land are in Brantley County?
The land measurement converts to approximately 283,674 acres. Including water, total area is approximately 286,213 acres. One square mile equals 640 acres.
Why might another source show a different area?
Check whether it reports land or total area, its Census vintage, and its rounding. Our guide explains how to reconcile county area figures.
Can this establish a property boundary?
No. Statistical measurements and generalized maps do not establish property lines. Consult the relevant local surveying or land-records authority.