Warren County area

Population and density of Warren County

The Census Bureau estimates that 41,759 people lived in Warren County on July 1, 2025. That ranks #1,181 of 3,222 county equivalents nationally and #17 of 82 in Mississippi. Since the April 1, 2020 estimates base of 44,716, the population has declined by 2,957 (−6.6%), compared with −0.2% for Mississippi as a whole.

With 588.5 square miles of land, that is 71 people per square mile (27 per km²), placing Warren County #1,248 nationally for density and #20 in Mississippi. The median county equivalent has 47 people per square mile; the Mississippi median is 43. Put another way, there are about 9 acres of land per resident.

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 Warren County

1 incorporated place lies at least partly in Warren County. Together they are home to 19,830 people (47.5%); the other 21,929 (52.5%) live outside any incorporated place, in unincorporated communities and rural areas.

The largest is Vicksburg city, with 19,830 residents in the county.

Metropolitan area

Warren County is a central county of the Vicksburg, MS Micropolitan Statistical Area. Warren County is the area’s only county equivalent, so the micro area has the same 588.5 square miles of land. By combined land it ranks #363 of 542 micropolitan areas, and #308 by population. It belongs to the Jackson-Vicksburg-Brookhaven, MS Combined Statistical Area.

ZIP codes

3 ZIP Code Tabulation Areas have land in Warren County, and each lies mostly inside the county.

391563918039183

ZIP Code Tabulation Areas are the Census Bureau’s approximations of USPS ZIP Code service areas, from the 2020 Census relationship files. Post-office-box and single-address ZIP Codes have no tabulation area.

Counties bordering Warren County

Warren County shares a land border with 7 county equivalents, including 3 in Louisiana. It has more land than 3 of them. The largest neighbor is Yazoo County (922.3 mi²) and the smallest is Issaquena County (413 mi²). Together with its neighbors, Warren County forms a block of 4,929.5 mi² of land, of which it holds 11.9%.

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

Warren County has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 1.8 times as much. Mississippi’s county land could hold about 80 areas the size of Warren County.

Another way to picture it: the same land area would fill a square about 24.3 miles (39 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 Warren County?

Warren County has more land than 1,557 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 Warren County at #1,683 nationally by total area, 18 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 4.9%, compared with a national county-equivalent median of 1.2% — 3.7 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 Warren County in the national ranking. They can be in different states and are not necessarily geographic neighbors.

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.