Carter County area

Carter County, Missouri covers 509 square miles: 507.3 square miles of land and 1.7 square miles of water. Its county seat is Van Buren. An estimated 5,418 people lived there in 2025.

Official Census measurements · GEOID 290352026 Gazetteer · retrieved September 27, 2026
Land area507.3 mi²
Water area1.7 mi²
Population (2025)5,418
People per mi²11

County outline

Generalized outline of Carter County, Missouri
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 Carter County is located

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

Area breakdown

Land accounts for 99.7% of Carter County’s measured area and water for 0.3%. Its combined area converts to 1,318.4 square kilometers or approximately 325,773 acres.

Green: land · blue: water

MeasurementSquare milesSquare kilometersAcres
Land507.3211,313.955324,685.4
Water1.74.4031,088
Total509.0211,318.358325,773.4

How Carter County compares

By original Census land area, Carter County ranks #78 of 115 in Missouri and #2047 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.

Its land area is 0.857 times the Missouri county-equivalent median of 592 square miles. It accounts for 0.7% of the combined county land area in the state.

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

Population and density of Carter County

The Census Bureau estimates that 5,418 people lived in Carter County on July 1, 2025. That ranks #2,863 of 3,222 county equivalents nationally and #107 of 115 in Missouri. Since the April 1, 2020 estimates base of 5,200, the population has grown by 218 (+4.2%), compared with +1.9% for Missouri as a whole.

With 507.3 square miles of land, that is 11 people per square mile (4.1 per km²), placing Carter County #2,623 nationally for density and #105 in Missouri. The median county equivalent has 47 people per square mile; the Missouri median is 31. Put another way, there are about 60 acres of land per resident.

Estimated population, 2020–2025 · line scaled to this county’s own range
July 1202020212022202320242025
Estimate5,2015,3205,2645,3285,3635,418
Change—+119−56+64+35+55

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 Carter County

3 incorporated places lie at least partly in Carter County. Together they are home to 1,446 people (26.7%); the other 3,972 (73.3%) live outside any incorporated place, in unincorporated communities and rural areas.

The largest is Van Buren town, with 792 residents in the county.

Incorporated placePopulation 2025Since 2020Land mi²
Van Buren townCounty seat792+5.3%1.852
Ellsinore city421+3.4%0.506
Grandin city233+4.5%0.4

Population: U.S. Census Bureau Vintage 2025 subcounty estimates, counting only the part of each place inside Carter County. Land: 2026 Census Gazetteer, for the whole place even where it extends into other counties. How communities are listed.

Metropolitan area

Carter 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 Carter County; 4 of them have most of their land inside the county, and the others mainly cover neighboring areas.

6393563937639416394363965

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 Carter County

Carter County shares a land border with 6 county equivalents. Each of them has more land than Carter County. The largest neighbor is Shannon County (1,003.8 mi²) and the smallest is Ripley County (629.5 mi²). Together with its neighbors, Carter County forms a block of 5,192.9 mi² of land, of which it holds 9.8%.

Map of Carter County and the 6 county equivalents that border it Ripley County, Missouri: 629.5 mi² landShannon County, Missouri: 1,003.8 mi² landReynolds County, Missouri: 808.5 mi² landWayne County, Missouri: 759.2 mi² landButler County, Missouri: 694.8 mi² landOregon County, Missouri: 789.8 mi² land
Carter 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. CarterCompare
Shannon County1,003.82× largerCompare
Reynolds County808.51.6× largerCompare
Oregon County789.81.6× largerCompare
Wayne County759.21.5× largerCompare
Butler County694.81.4× largerCompare
Ripley County629.51.2× largerCompare

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

Carter 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 times as much. Missouri’s county land could hold about 136 areas the size of Carter County.

Land area: Carter County and the closest-sized states
Carter County507.3 mi²
Rhode Island1,033.9 mi²

Another way to picture it: the same land area would fill a square about 22.5 miles (36.2 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 Carter County?

Carter County has more land than 1,175 of the other 3,221 county equivalents in the dataset.

Land area compared with the typical county equivalent
Carter County507.3 mi²
Missouri median592 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 Carter County at #2,141 nationally by total area, 94 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 0.3%, compared with a national county-equivalent median of 1.2% — 0.8 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 Carter County in the national ranking. They can be in different states and are not necessarily geographic neighbors.

Land rankCounty equivalentLand mi²Comparison
#2046Carteret County, North Carolina507.6Compare
#2047Carter County, Missouri507.3This county
#2048Hamlin County, South Dakota507.1Compare

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 36.944858, -90.945705. 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: 1,313,955,394 m²; AWATER: 4,402,031 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 Carter County?

Carter County, Missouri has 507.3 square miles (1,314 km²) of land and 1.7 square miles of water, for a total area of 509 square miles. It ranks #2047 of 3,222 U.S. county equivalents by land area.

Is Carter County the largest county in Missouri?

No. Carter County ranks #78 of 115 in Missouri by land area. The largest is Texas County, with 1,177.3 square miles of land.

What counties border Carter County?

Carter County shares a land border with Ripley County, Shannon County, Reynolds County, Wayne County, Butler County, and Oregon County.

What is the population of Carter County?

The Census Bureau estimates Carter County had 5,418 residents on July 1, 2025, ranking #2,863 of 3,222 county equivalents. That is 11 people per square mile of land.

What is the county seat of Carter County?

The county seat of Carter County is Van Buren.

What cities and towns are in Carter County?

Carter County has 3 incorporated places. The most populous are Van Buren town, Ellsinore city, and Grandin city; 3,972 residents live outside any incorporated place.

Is Carter County part of a metropolitan area?

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

How many ZIP codes are in Carter County?

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

It has less land than every state. Rhode Island, the smallest, has 2 times as much land.

How many acres of land are in Carter County?

The land measurement converts to approximately 324,685 acres. Including water, total area is approximately 325,773 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

Download the complete CSV or JSON dataset