Claiborne County area

Claiborne County, Mississippi covers 501.2 square miles: 487.4 square miles of land and 13.8 square miles of water. Its county seat is Port Gibson. An estimated 8,058 people lived there in 2025.

Official Census measurements · GEOID 280212026 Gazetteer · retrieved September 27, 2026
Land area487.4 mi²
Water area13.8 mi²
Population (2025)8,058
People per mi²17

County outline

Generalized outline of Claiborne County, Mississippi
2025 Census cartographic boundary, fitted to this frame. County maps are not at a common scale. The 2026 area measurements below come from the separate Gazetteer release. Map source and limitations.

Where Claiborne County is located

Claiborne County highlighted on a map of all U.S. county equivalents. About the maps

Area breakdown

Land accounts for 97.2% of Claiborne County’s measured area and water for 2.8%. Its combined area converts to 1,298.1 square kilometers or approximately 320,770 acres.

Green: land · blue: water

MeasurementSquare milesSquare kilometersAcres
Land487.4151,262.399311,945.6
Water13.78835.7118,824.3
Total501.2031,298.11320,769.9

How Claiborne County compares

By original Census land area, Claiborne County ranks #51 of 82 in Mississippi and #2132 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.

Its land area is 0.86 times the Mississippi county-equivalent median of 567 square miles. It accounts for 1% of the combined county land area in the state.

See the complete Mississippi ranking · What counts as a county equivalent?

Population and density of Claiborne County

The Census Bureau estimates that 8,058 people lived in Claiborne County on July 1, 2025. That ranks #2,641 of 3,222 county equivalents nationally and #73 of 82 in Mississippi. Since the April 1, 2020 estimates base of 9,134, the population has declined by 1,076 (−11.8%), compared with −0.2% for Mississippi as a whole.

With 487.4 square miles of land, that is 17 people per square mile (6.4 per km²), placing Claiborne County #2,429 nationally for density and #73 in Mississippi. The median county equivalent has 47 people per square mile; the Mississippi median is 43. Put another way, there are about 39 acres of land per resident.

Estimated population, 2020–2025 · line scaled to this county’s own range
July 1202020212022202320242025
Estimate9,0938,6678,5768,3858,0928,058
Change—−426−91−191−293−34

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 Claiborne County

1 incorporated place lies at least partly in Claiborne County. Together they are home to 1,155 people (14.3%); the other 6,903 (85.7%) live outside any incorporated place, in unincorporated communities and rural areas.

The largest is Port Gibson city, with 1,155 residents in the county.

Metropolitan area

Claiborne 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

5 ZIP Code Tabulation Areas have land in Claiborne County; 3 of them have most of their land inside the county, and the others mainly cover neighboring areas.

3908639096391443915039175

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 Claiborne County

Claiborne County shares a land border with 5 county equivalents, including 1 in Louisiana. Each of them has more land than Claiborne County. The largest neighbor is Hinds County (869.8 mi²) and the smallest is Jefferson County (519.9 mi²). Together with its neighbors, Claiborne County forms a block of 3,846.3 mi² of land, of which it holds 12.7%.

Map of Claiborne County and the 5 county equivalents that border it Jefferson County, Mississippi: 519.9 mi² landTensas Parish, Louisiana: 603.3 mi² landWarren County, Mississippi: 588.5 mi² landCopiah County, Mississippi: 777.3 mi² landHinds County, Mississippi: 869.8 mi² land
Claiborne County (dark) and its bordering county equivalents. Select a neighbor to open its profile. Drawn from the 2025 Census cartographic boundaries in an equal-area projection. How borders are determined.
Bordering county equivalentLand mi²Size vs. ClaiborneCompare
Hinds County869.81.8× largerCompare
Copiah County777.31.6× largerCompare
Tensas ParishLouisiana603.31.2× largerCompare
Warren County588.51.2× largerCompare
Jefferson County519.91.1× largerCompare

How big is Claiborne County compared with U.S. states?

Claiborne County has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 2.1 times as much. Mississippi’s county land could hold about 96 areas the size of Claiborne County.

Land area: Claiborne County and the closest-sized states
Claiborne County487.4 mi²
Rhode Island1,033.9 mi²

Another way to picture it: the same land area would fill a square about 22.1 miles (35.5 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 Claiborne County?

Claiborne County has more land than 1,090 of the other 3,221 county equivalents in the dataset.

Land area compared with the typical county equivalent
Claiborne County487.4 mi²
Mississippi median567 mi²
National median604.5 mi²

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 Claiborne County at #2,179 nationally by total area, 47 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 2.8%, compared with a national county-equivalent median of 1.2% — 1.6 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 Claiborne County in the national ranking. They can be in different states and are not necessarily geographic neighbors.

Land rankCounty equivalentLand mi²Comparison
#2131Portage County, Ohio487.5Compare
#2132Claiborne County, Mississippi487.4This county
#2133Gibson County, Indiana487.4Compare

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 31.972810, -90.915424. 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: 1,262,400,015 m²; AWATER: 35,711,128 m². Rankings use ALAND; exact ties use ascending GEOID. Tables preserve Census-published square miles to three decimals, with conversions based on those values.

Download the official county source ZIP ↗ · Methodology

Common questions

How big is Claiborne County?

Claiborne County, Mississippi has 487.4 square miles (1,262.4 km²) of land and 13.8 square miles of water, for a total area of 501.2 square miles. It ranks #2132 of 3,222 U.S. county equivalents by land area.

Is Claiborne County the largest county in Mississippi?

No. Claiborne County ranks #51 of 82 in Mississippi by land area. The largest is Yazoo County, with 922.3 square miles of land.

What counties border Claiborne County?

Claiborne County shares a land border with Jefferson County, Tensas Parish, Louisiana, Warren County, Copiah County, and Hinds County.

What is the population of Claiborne County?

The Census Bureau estimates Claiborne County had 8,058 residents on July 1, 2025, ranking #2,641 of 3,222 county equivalents. That is 17 people per square mile of land.

What is the county seat of Claiborne County?

The county seat of Claiborne County is Port Gibson.

Is Claiborne County part of a metropolitan area?

No. Claiborne County is outside every metropolitan and micropolitan statistical area in the July 2023 OMB delineation.

How many ZIP codes are in Claiborne County?

5 ZIP Code Tabulation Areas have land in Claiborne 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 Claiborne County compare with U.S. states?

It has less land than every state. Rhode Island, the smallest, has 2.1 times as much land.

How many acres of land are in Claiborne County?

The land measurement converts to approximately 311,946 acres. Including water, total area is approximately 320,770 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.

Cite this county

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