County outline
Where McIntosh County is located
Area breakdown
Land accounts for 75.2% of McIntosh County’s measured area and water for 24.8%. Its combined area converts to 1,486.4 square kilometers or approximately 367,288 acres.
Green: land · blue: water
| Measurement | Square miles | Square kilometers | Acres |
|---|---|---|---|
| Land | 431.347 | 1,117.184 | 276,062.1 |
| Water | 142.541 | 369.179 | 91,226.2 |
| Total | 573.888 | 1,486.363 | 367,288.3 |
How McIntosh County compares
By original Census land area, McIntosh County ranks #47 of 159 in Georgia and #2354 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.
Its land area is 1.259 times the Georgia county-equivalent median of 342.7 square miles. It accounts for 0.7% of the combined county land area in the state.
See the complete Georgia ranking · What counts as a county equivalent?
Population and density of McIntosh County
The Census Bureau estimates that 11,989 people lived in McIntosh County on July 1, 2025. That ranks #2,352 of 3,222 county equivalents nationally and #116 of 159 in Georgia. Since the April 1, 2020 estimates base of 10,970, the population has grown by 1,019 (+9.3%), compared with +5.5% for Georgia as a whole.
With 431.3 square miles of land, that is 28 people per square mile (11 per km²), placing McIntosh County #2,070 nationally for density and #128 in Georgia. The median county equivalent has 47 people per square mile; the Georgia median is 69. Put another way, there are about 23 acres of land per resident.
| July 1 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|
| Estimate | 10,981 | 11,069 | 11,194 | 11,569 | 11,817 | 11,989 |
| Change | — | +88 | +125 | +375 | +248 | +172 |
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 McIntosh County
1 incorporated place lies at least partly in McIntosh County. Together they are home to 1,807 people (15.1%); the other 10,182 (84.9%) live outside any incorporated place, in unincorporated communities and rural areas.
The largest is Darien city, with 1,807 residents in the county.
Metropolitan area
McIntosh 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; McIntosh County accounts for 33.3% of the land and 10.1% 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
4 ZIP Code Tabulation Areas have land in McIntosh County; 3 of them have most of their land inside the county, and the others mainly cover neighboring areas.
31305313233132731331
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 McIntosh County
McIntosh County shares a land border with 4 county equivalents. It has more land than 2 of them. The largest neighbor is Wayne County (641.8 mi²) and the smallest is Long County (400.4 mi²). Together with its neighbors, McIntosh County forms a block of 2,409.6 mi² of land, of which it holds 17.9%.
| Bordering county equivalent | Land mi² | Size vs. McIntosh | Compare |
|---|---|---|---|
| Wayne County | 641.8 | 1.5× larger | Compare |
| Liberty County | 516.5 | 1.2× larger | Compare |
| Glynn County | 419.6 | about the same | Compare |
| Long County | 400.4 | 1.1× smaller | Compare |
How big is McIntosh County compared with U.S. states?
McIntosh County has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 2.4 times as much. Georgia’s county land could hold about 134 areas the size of McIntosh County.
Another way to picture it: the same land area would fill a square about 20.8 miles (33.4 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 McIntosh County?
McIntosh County has more land than 868 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 McIntosh County at #1,892 nationally by total area, 462 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 24.8%, compared with a national county-equivalent median of 1.2% — 23.7 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 McIntosh County in the national ranking. They can be in different states and are not necessarily geographic neighbors.
| Land rank | County equivalent | Land mi² | Comparison |
|---|---|---|---|
| #2353 | Ida County, Iowa | 431.5 | Compare |
| #2354 | McIntosh County, Georgia | 431.3 | This county |
| #2355 | Atchison County, Kansas | 431.2 | 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 31.485220, -81.372075. 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: 1,117,184,385 m²; AWATER: 369,178,543 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 McIntosh County?
McIntosh County, Georgia has 431.3 square miles (1,117.2 km²) of land and 142.5 square miles of water, for a total area of 573.9 square miles. It ranks #2354 of 3,222 U.S. county equivalents by land area.
Is McIntosh County the largest county in Georgia?
No. McIntosh County ranks #47 of 159 in Georgia by land area. The largest is Ware County, with 899.4 square miles of land.
What counties border McIntosh County?
McIntosh County shares a land border with Glynn County, Liberty County, Long County, and Wayne County.
What is the population of McIntosh County?
The Census Bureau estimates McIntosh County had 11,989 residents on July 1, 2025, ranking #2,352 of 3,222 county equivalents. That is 28 people per square mile of land.
What is the county seat of McIntosh County?
The county seat of McIntosh County is Darien.
Is McIntosh 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 McIntosh County?
4 ZIP Code Tabulation Areas have land in McIntosh County, and 3 of them have most of their land inside the county. Census ZIP Code Tabulation Areas approximate USPS ZIP Code areas.
How does McIntosh County compare with U.S. states?
It has less land than every state. Rhode Island, the smallest, has 2.4 times as much land.
How many acres of land are in McIntosh County?
The land measurement converts to approximately 276,062 acres. Including water, total area is approximately 367,288 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.