County outline
Where Carroll County is located
Area breakdown
Land accounts for 99% of Carroll County’s measured area and water for 1%. Its combined area converts to 1,643.6 square kilometers or approximately 406,134 acres.
Green: land · blue: water
| Measurement | Square miles | Square kilometers | Acres |
|---|---|---|---|
| Land | 628.388 | 1,627.517 | 402,168.3 |
| Water | 6.197 | 16.05 | 3,966.1 |
| Total | 634.585 | 1,643.568 | 406,134.4 |
How Carroll County compares
By original Census land area, Carroll County ranks #30 of 82 in Mississippi and #1530 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.
Its land area is 1.108 times the Mississippi county-equivalent median of 567 square miles. It accounts for 1.3% of the combined county land area in the state.
See the complete Mississippi ranking · What counts as a county equivalent?
Population and density of Carroll County
The Census Bureau estimates that 9,226 people lived in Carroll County on July 1, 2025. That ranks #2,545 of 3,222 county equivalents nationally and #70 of 82 in Mississippi. Since the April 1, 2020 estimates base of 10,003, the population has declined by 777 (−7.8%), compared with −0.2% for Mississippi as a whole.
With 628.4 square miles of land, that is 15 people per square mile (5.7 per km²), placing Carroll County #2,484 nationally for density and #74 in Mississippi. The median county equivalent has 47 people per square mile; the Mississippi median is 43. Put another way, there are about 44 acres of land per resident.
| July 1 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|
| Estimate | 9,937 | 9,829 | 9,744 | 9,518 | 9,385 | 9,226 |
| Change | — | −108 | −85 | −226 | −133 | −159 |
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 Carroll County
3 incorporated places lie at least partly in Carroll County. Together they are home to 1,644 people (17.8%); the other 7,582 (82.2%) live outside any incorporated place, in unincorporated communities and rural areas.
The largest is Vaiden town, with 872 residents in the county.
| Incorporated place | Population 2025 | Since 2020 | Land mi² |
|---|---|---|---|
| Vaiden townCounty seat | 872 | −3.3% | 2.145 |
| Carrollton townCounty seat | 406 | −7.1% | 0.813 |
| North Carrollton town | 366 | −9.4% | 0.315 |
Population: U.S. Census Bureau Vintage 2025 subcounty estimates, counting only the part of each place inside Carroll County. Land: 2026 Census Gazetteer, for the whole place even where it extends into other counties. How communities are listed.
Metropolitan area
Carroll County is an outlying county of the Greenwood, MS Micropolitan Statistical Area. Its 2 county equivalents have 34,912 residents on 1,222.5 square miles of land; Carroll County accounts for 51.4% of the land and 26.4% of the residents. By combined land it ranks #143 of 542 micropolitan areas, and #393 by population.
| County equivalent | Population 2025 | Land mi² |
|---|---|---|
| Leflore County | 25,686 | 594.1 |
| Carroll County | 9,226 | 628.4 |
ZIP codes
13 ZIP Code Tabulation Areas have land in Carroll County; 5 of them have most of their land inside the county, and the others mainly cover neighboring areas.
38901389173892338924389303894038943389473895438967390953917639192
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 Carroll County
Carroll County shares a land border with 5 county equivalents. It has more land than 3 of them. The largest neighbor is Holmes County (756.7 mi²) and the smallest is Montgomery County (407 mi²). Together with its neighbors, Carroll County forms a block of 3,543.2 mi² of land, of which it holds 17.7%.
| Bordering county equivalent | Land mi² | Size vs. Carroll | Compare |
|---|---|---|---|
| Holmes County | 756.7 | 1.2× larger | Compare |
| Attala County | 735 | 1.2× larger | Compare |
| Leflore County | 594.1 | 1.1× smaller | Compare |
| Grenada County | 422.1 | 1.5× smaller | Compare |
| Montgomery County | 407 | 1.5× smaller | Compare |
How big is Carroll County compared with U.S. states?
Carroll County has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 1.6 times as much. Mississippi’s county land could hold about 75 areas the size of Carroll County.
Another way to picture it: the same land area would fill a square about 25.1 miles (40.3 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 Carroll County?
Carroll County has more land than 1,692 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 Carroll County at #1,630 nationally by total area, 100 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%, compared with a national county-equivalent median of 1.2% — 0.2 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 Carroll County in the national ranking. They can be in different states and are not necessarily geographic neighbors.
| Land rank | County equivalent | Land mi² | Comparison |
|---|---|---|---|
| #1529 | Clark County, Washington | 628.5 | Compare |
| #1530 | Carroll County, Mississippi | 628.4 | This county |
| #1531 | Ocean County, New Jersey | 628.3 | 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 33.440795, -89.918887. 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: 1,627,517,134 m²; AWATER: 16,050,555 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 Carroll County?
Carroll County, Mississippi has 628.4 square miles (1,627.5 km²) of land and 6.197 square miles of water, for a total area of 634.6 square miles. It ranks #1530 of 3,222 U.S. county equivalents by land area.
Is Carroll County the largest county in Mississippi?
No. Carroll County ranks #30 of 82 in Mississippi by land area. The largest is Yazoo County, with 922.3 square miles of land.
What counties border Carroll County?
Carroll County shares a land border with Montgomery County, Holmes County, Leflore County, Grenada County, and Attala County.
What is the population of Carroll County?
The Census Bureau estimates Carroll County had 9,226 residents on July 1, 2025, ranking #2,545 of 3,222 county equivalents. That is 15 people per square mile of land.
What is the county seat of Carroll County?
Carroll County has two county seats: Carrollton and Vaiden.
What cities and towns are in Carroll County?
Carroll County has 3 incorporated places. The most populous are Vaiden town, Carrollton town, and North Carrollton town; 7,582 residents live outside any incorporated place.
Is Carroll County part of a metropolitan area?
Yes. It is an outlying county of the Greenwood, MS Micropolitan Statistical Area, which has 2 county equivalents and 34,912 residents.
How many ZIP codes are in Carroll County?
13 ZIP Code Tabulation Areas have land in Carroll County, and 5 of them have most of their land inside the county. Census ZIP Code Tabulation Areas approximate USPS ZIP Code areas.
How does Carroll County compare with U.S. states?
It has less land than every state. Rhode Island, the smallest, has 1.6 times as much land.
How many acres of land are in Carroll County?
The land measurement converts to approximately 402,168 acres. Including water, total area is approximately 406,134 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.