County outline
Where Montgomery County is located
Area breakdown
Land accounts for 98.5% of Montgomery County’s measured area and water for 1.5%. Its combined area converts to 633.8 square kilometers or approximately 156,604 acres.
Green: land · blue: water
| Measurement | Square miles | Square kilometers | Acres |
|---|---|---|---|
| Land | 241.145 | 624.563 | 154,332.8 |
| Water | 3.549 | 9.192 | 2,271.4 |
| Total | 244.694 | 633.755 | 156,604.2 |
How Montgomery County compares
By original Census land area, Montgomery County ranks #123 of 159 in Georgia and #2927 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.
Its land area is 0.704 times the Georgia county-equivalent median of 342.7 square miles. It accounts for 0.4% of the combined county land area in the state.
See the complete Georgia ranking · What counts as a county equivalent?
Population and density of Montgomery County
The Census Bureau estimates that 8,635 people lived in Montgomery County on July 1, 2025. That ranks #2,600 of 3,222 county equivalents nationally and #136 of 159 in Georgia. Since the April 1, 2020 estimates base of 8,600, the population has grown by 35 (+0.4%), compared with +5.5% for Georgia as a whole.
With 241.1 square miles of land, that is 36 people per square mile (14 per km²), placing Montgomery County #1,857 nationally for density and #115 in Georgia. The median county equivalent has 47 people per square mile; the Georgia median is 69. Put another way, there are about 18 acres of land per resident.
| July 1 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|
| Estimate | 8,565 | 8,635 | 8,647 | 8,765 | 8,597 | 8,635 |
| Change | — | +70 | +12 | +118 | −168 | +38 |
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 Montgomery County
7 incorporated places lie at least partly in Montgomery County. Together they are home to 3,560 people (41.2%); the other 5,075 (58.8%) live outside any incorporated place, in unincorporated communities and rural areas.
The largest is Mount Vernon city, with 1,925 residents in the county. By land, Vidalia city is the largest at 17.9 mi² across all its counties.
| Incorporated place | Population 2025 | Since 2020 | Land mi² |
|---|---|---|---|
| Mount Vernon cityCounty seat | 1,925 | −2.7% | 4.198 |
| Ailey city | 517 | +0.4% | 2.159 |
| Uvalda city | 438 | +0.2% | 1.893 |
| Higgston town | 305 | −2.9% | 3.145 |
| Alston town | 175 | +0.6% | 2.849 |
| Vidalia cityAlso in 1 other county | 136 | −0.7% | 17.9 |
| Tarrytown town | 64 | +3.2% | 0.857 |
Population: U.S. Census Bureau Vintage 2025 subcounty estimates, counting only the part of each place inside Montgomery County. Land: 2026 Census Gazetteer, for the whole place even where it extends into other counties. How communities are listed.
Metropolitan area
Montgomery County is an outlying county of the Vidalia, GA Micropolitan Statistical Area. Its 2 county equivalents have 36,180 residents on 605.2 square miles of land; Montgomery County accounts for 39.8% of the land and 23.9% of the residents. By combined land it ranks #351 of 542 micropolitan areas, and #381 by population.
| County equivalent | Population 2025 | Land mi² |
|---|---|---|
| Toombs County | 27,545 | 364 |
| Montgomery County | 8,635 | 241.1 |
ZIP codes
7 ZIP Code Tabulation Areas have land in Montgomery County; 4 of them have most of their land inside the county, and the others mainly cover neighboring areas.
30410304123044530457304703047330474
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 Montgomery County
Montgomery County shares a land border with 4 county equivalents. It has more land than 1 of them. The largest neighbor is Toombs County (364 mi²) and the smallest is Treutlen County (199.4 mi²). Together with its neighbors, Montgomery County forms a block of 1,431 mi² of land, of which it holds 16.9%.
| Bordering county equivalent | Land mi² | Size vs. Montgomery | Compare |
|---|---|---|---|
| Toombs County | 364 | 1.5× larger | Compare |
| Jeff Davis County | 330.9 | 1.4× larger | Compare |
| Wheeler County | 295.5 | 1.2× larger | Compare |
| Treutlen County | 199.4 | 1.2× smaller | Compare |
How big is Montgomery County compared with U.S. states?
Montgomery County has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 4.3 times as much. Georgia’s county land could hold about 239 areas the size of Montgomery County.
Another way to picture it: the same land area would fill a square about 15.5 miles (25 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 Montgomery County?
Montgomery County has more land than 295 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 Montgomery County at #2,964 nationally by total area, 37 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 1.5%, compared with a national county-equivalent median of 1.2% — 0.3 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 Montgomery County in the national ranking. They can be in different states and are not necessarily geographic neighbors.
| Land rank | County equivalent | Land mi² | Comparison |
|---|---|---|---|
| #2926 | Milwaukee County, Wisconsin | 241.5 | Compare |
| #2927 | Montgomery County, Georgia | 241.1 | This county |
| #2928 | White County, Georgia | 240.8 | 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 32.172108, -82.533349. 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: 624,563,055 m²; AWATER: 9,191,488 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 Montgomery County?
Montgomery County, Georgia has 241.1 square miles (624.6 km²) of land and 3.549 square miles of water, for a total area of 244.7 square miles. It ranks #2927 of 3,222 U.S. county equivalents by land area.
Is Montgomery County the largest county in Georgia?
No. Montgomery County ranks #123 of 159 in Georgia by land area. The largest is Ware County, with 899.4 square miles of land.
What counties border Montgomery County?
Montgomery County shares a land border with Toombs County, Wheeler County, Treutlen County, and Jeff Davis County.
What is the population of Montgomery County?
The Census Bureau estimates Montgomery County had 8,635 residents on July 1, 2025, ranking #2,600 of 3,222 county equivalents. That is 36 people per square mile of land.
What is the county seat of Montgomery County?
The county seat of Montgomery County is Mount Vernon.
What cities and towns are in Montgomery County?
Montgomery County has 7 incorporated places. The most populous five are Mount Vernon city, Ailey city, Uvalda city, Higgston town, and Alston town; 5,075 residents live outside any incorporated place.
Is Montgomery County part of a metropolitan area?
Yes. It is an outlying county of the Vidalia, GA Micropolitan Statistical Area, which has 2 county equivalents and 36,180 residents.
How many ZIP codes are in Montgomery County?
7 ZIP Code Tabulation Areas have land in Montgomery 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 Montgomery County compare with U.S. states?
It has less land than every state. Rhode Island, the smallest, has 4.3 times as much land.
How many acres of land are in Montgomery County?
The land measurement converts to approximately 154,333 acres. Including water, total area is approximately 156,604 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.