County outline
Where Tattnall County is located
Area breakdown
Land accounts for 98.5% of Tattnall County’s measured area and water for 1.5%. Its combined area converts to 1,264.8 square kilometers or approximately 312,543 acres.
Green: land · blue: water
| Measurement | Square miles | Square kilometers | Acres |
|---|---|---|---|
| Land | 480.84 | 1,245.37 | 307,737.6 |
| Water | 7.509 | 19.448 | 4,805.8 |
| Total | 488.349 | 1,264.818 | 312,543.4 |
How Tattnall County compares
By original Census land area, Tattnall County ranks #30 of 159 in Georgia and #2153 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.
Its land area is 1.403 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 Tattnall County
The Census Bureau estimates that 24,376 people lived in Tattnall County on July 1, 2025. That ranks #1,689 of 3,222 county equivalents nationally and #80 of 159 in Georgia. Since the April 1, 2020 estimates base of 24,285, the population has grown by 91 (+0.4%), compared with +5.5% for Georgia as a whole.
With 480.8 square miles of land, that is 51 people per square mile (20 per km²), placing Tattnall County #1,535 nationally for density and #94 in Georgia. The median county equivalent has 47 people per square mile; the Georgia median is 69. Put another way, there are about 13 acres of land per resident.
| July 1 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|
| Estimate | 24,328 | 24,137 | 24,063 | 24,389 | 24,390 | 24,376 |
| Change | — | −191 | −74 | +326 | +1 | −14 |
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 Tattnall County
5 incorporated places lie at least partly in Tattnall County. Together they are home to 8,550 people (35.1%); the other 15,826 (64.9%) live outside any incorporated place, in unincorporated communities and rural areas.
The largest is Glennville city, with 5,023 residents in the county. The county seat, Reidsville city, has 2,576 residents. By land, Reidsville city is the largest at 7.572 mi². Among places with at least 1,000 residents in 2020, Reidsville city grew fastest since then (+2.5%).
| Incorporated place | Population 2025 | Since 2020 | Land mi² |
|---|---|---|---|
| Glennville city | 5,023 | −4.8% | 7.046 |
| Reidsville cityCounty seat | 2,576 | +2.5% | 7.572 |
| Collins city | 545 | +0.7% | 1.02 |
| Cobbtown city | 344 | 0% | 0.669 |
| Manassas city | 62 | +3.3% | 0.773 |
Population: U.S. Census Bureau Vintage 2025 subcounty estimates, counting only the part of each place inside Tattnall County. Land: 2026 Census Gazetteer, for the whole place even where it extends into other counties. How communities are listed.
Metropolitan area
Tattnall County is not part of any metropolitan or micropolitan statistical area in the Office of Management and Budget’s July 2023 delineation; 1,306 other county equivalents are also outside one. These areas are built around an urban core of at least 10,000 people plus the counties tied to it by commuting, so counties outside them are generally rural.
ZIP codes
6 ZIP Code Tabulation Areas have land in Tattnall County; 3 of them have most of their land inside the county, and the others mainly cover neighboring areas.
304173042030421304273043630453
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 Tattnall County
Tattnall County shares a land border with 7 county equivalents. It has more land than 4 of them. The largest neighbor is Wayne County (641.8 mi²) and the smallest is Evans County (182.9 mi²). Together with its neighbors, Tattnall County forms a block of 3,337.7 mi² of land, of which it holds 14.4%.
| Bordering county equivalent | Land mi² | Size vs. Tattnall | Compare |
|---|---|---|---|
| Wayne County | 641.8 | 1.3× larger | Compare |
| Liberty County | 516.5 | 1.1× larger | Compare |
| Appling County | 508.3 | 1.1× larger | Compare |
| Long County | 400.4 | 1.2× smaller | Compare |
| Toombs County | 364 | 1.3× smaller | Compare |
| Candler County | 243.1 | 2× smaller | Compare |
| Evans County | 182.9 | 2.6× smaller | Compare |
How big is Tattnall County compared with U.S. states?
Tattnall County has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 2.2 times as much. Georgia’s county land could hold about 120 areas the size of Tattnall County.
Another way to picture it: the same land area would fill a square about 21.9 miles (35.3 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 Tattnall County?
Tattnall County has more land than 1,069 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 Tattnall County at #2,220 nationally by total area, 67 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% — 0.4 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 Tattnall County in the national ranking. They can be in different states and are not necessarily geographic neighbors.
| Land rank | County equivalent | Land mi² | Comparison |
|---|---|---|---|
| #2152 | Bristol Bay Borough, Alaska | 481.4 | Compare |
| #2153 | Tattnall County, Georgia | 480.8 | This county |
| #2154 | Putnam County, Indiana | 480.5 | 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 32.043768, -82.059208. 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: 1,245,369,508 m²; AWATER: 19,447,407 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 Tattnall County?
Tattnall County, Georgia has 480.8 square miles (1,245.4 km²) of land and 7.509 square miles of water, for a total area of 488.3 square miles. It ranks #2153 of 3,222 U.S. county equivalents by land area.
Is Tattnall County the largest county in Georgia?
No. Tattnall County ranks #30 of 159 in Georgia by land area. The largest is Ware County, with 899.4 square miles of land.
What counties border Tattnall County?
Tattnall County shares a land border with Toombs County, Evans County, Long County, Candler County, Appling County, Wayne County, and Liberty County.
What is the population of Tattnall County?
The Census Bureau estimates Tattnall County had 24,376 residents on July 1, 2025, ranking #1,689 of 3,222 county equivalents. That is 51 people per square mile of land.
What is the county seat of Tattnall County?
The county seat of Tattnall County is Reidsville.
What cities and towns are in Tattnall County?
Tattnall County has 5 incorporated places. The most populous are Glennville city, Reidsville city, Collins city, Cobbtown city, and Manassas city; 15,826 residents live outside any incorporated place.
Is Tattnall County part of a metropolitan area?
No. Tattnall County is outside every metropolitan and micropolitan statistical area in the July 2023 OMB delineation.
How many ZIP codes are in Tattnall County?
6 ZIP Code Tabulation Areas have land in Tattnall 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 Tattnall County compare with U.S. states?
It has less land than every state. Rhode Island, the smallest, has 2.2 times as much land.
How many acres of land are in Tattnall County?
The land measurement converts to approximately 307,738 acres. Including water, total area is approximately 312,543 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.