Arkansas County area

Arkansas County, Arkansas covers 1,038.7 square miles: 992.1 square miles of land and 46.6 square miles of water. Its county seat is DeWitt and Stuttgart. An estimated 15,836 people lived there in 2025.

Official Census measurements · GEOID 050012026 Gazetteer · retrieved September 27, 2026
Land area992.1 mi²
Water area46.6 mi²
Population (2025)15,836
People per mi²16

County outline

Generalized outline of Arkansas County, Arkansas
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 Arkansas County is located

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

Area breakdown

Land accounts for 95.5% of Arkansas County’s measured area and water for 4.5%. Its combined area converts to 2,690.3 square kilometers or approximately 664,795 acres.

Green: land · blue: water

MeasurementSquare milesSquare kilometersAcres
Land992.142,569.631634,969.6
Water46.602120.69929,825.3
Total1,038.7422,690.329664,794.9

How Arkansas County compares

By original Census land area, Arkansas County ranks #3 of 75 in Arkansas and #693 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.

Its land area is 1.533 times the Arkansas county-equivalent median of 647.2 square miles. It accounts for 1.9% of the combined county land area in the state.

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

Population and density of Arkansas County

The Census Bureau estimates that 15,836 people lived in Arkansas County on July 1, 2025. That ranks #2,114 of 3,222 county equivalents nationally and #48 of 75 in Arkansas. Since the April 1, 2020 estimates base of 17,146, the population has declined by 1,310 (−7.6%), compared with +3.4% for Arkansas as a whole.

With 992.1 square miles of land, that is 16 people per square mile (6.2 per km²), placing Arkansas County #2,439 nationally for density and #59 in Arkansas. The median county equivalent has 47 people per square mile; the Arkansas median is 28. Put another way, there are about 40 acres of land per resident.

Estimated population, 2020–2025 · line scaled to this county’s own range
July 1202020212022202320242025
Estimate17,10616,67016,46416,33416,09215,836
Change—−436−206−130−242−256

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 Arkansas County

6 incorporated places lie at least partly in Arkansas County. Together they are home to 11,590 people (73.2%); the other 4,246 (26.8%) live outside any incorporated place, in unincorporated communities and rural areas.

The largest is Stuttgart city, with 7,525 residents in the county.

Incorporated placePopulation 2025Since 2020Land mi²
Stuttgart cityCounty seat7,525−8.9%7.413
DeWitt cityCounty seat2,791−8.3%2.992
Gillett city619+9.6%0.996
Almyra town237−7.8%0.388
Humphrey cityAlso in 1 other county227−7.3%1.306
St. Charles town191−6.8%0.887

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

Metropolitan area

Arkansas 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

13 ZIP Code Tabulation Areas have land in Arkansas County; 10 of them have most of their land inside the county, and the others mainly cover neighboring areas.

72003720047202672038720427204872055720737213472140721607216672175

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 Arkansas County

Arkansas County shares a land border with 7 county equivalents. It has more land than every one of them. The largest neighbor is Jefferson County (872.3 mi²) and the smallest is Lincoln County (559.5 mi²). Together with its neighbors, Arkansas County forms a block of 5,882.2 mi² of land, of which it holds 16.9%.

Map of Arkansas County and the 7 county equivalents that border it Jefferson County, Arkansas: 872.3 mi² landDesha County, Arkansas: 741.2 mi² landMonroe County, Arkansas: 607.5 mi² landPrairie County, Arkansas: 647.5 mi² landPhillips County, Arkansas: 690.4 mi² landLincoln County, Arkansas: 559.5 mi² landLonoke County, Arkansas: 771.7 mi² land
Arkansas 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. ArkansasCompare
Jefferson County872.31.1× smallerCompare
Lonoke County771.71.3× smallerCompare
Desha County741.21.3× smallerCompare
Phillips County690.41.4× smallerCompare
Prairie County647.51.5× smallerCompare
Monroe County607.51.6× smallerCompare
Lincoln County559.51.8× smallerCompare

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

Arkansas 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 times as much. Arkansas’s county land could hold about 52 areas the size of Arkansas County.

Land area: Arkansas County and the closest-sized states
Arkansas County992.1 mi²
Rhode Island1,033.9 mi²

Another way to picture it: the same land area would fill a square about 31.5 miles (50.7 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 Arkansas County?

Arkansas County has more land than 2,529 of the other 3,221 county equivalents in the dataset.

Land area compared with the typical county equivalent
Arkansas County992.1 mi²
Arkansas median647.2 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 Arkansas County at #735 nationally by total area, 42 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 4.5%, compared with a national county-equivalent median of 1.2% — 3.3 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 Arkansas County in the national ranking. They can be in different states and are not necessarily geographic neighbors.

Land rankCounty equivalentLand mi²Comparison
#692Floyd County, Texas992.1Compare
#693Arkansas County, Arkansas992.1This county
#694York County, Maine991.2Compare

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 34.289570, -91.376547. 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: 2,569,631,430 m²; AWATER: 120,698,190 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 Arkansas County?

Arkansas County, Arkansas has 992.1 square miles (2,569.6 km²) of land and 46.6 square miles of water, for a total area of 1,038.7 square miles. It ranks #693 of 3,222 U.S. county equivalents by land area.

Is Arkansas County the largest county in Arkansas?

No. Arkansas County ranks #3 of 75 in Arkansas by land area. The largest is Union County, with 1,039.1 square miles of land.

What counties border Arkansas County?

Arkansas County shares a land border with Jefferson County, Desha County, Monroe County, Prairie County, Phillips County, Lincoln County, and Lonoke County.

What is the population of Arkansas County?

The Census Bureau estimates Arkansas County had 15,836 residents on July 1, 2025, ranking #2,114 of 3,222 county equivalents. That is 16 people per square mile of land.

What is the county seat of Arkansas County?

Arkansas County has two county seats: DeWitt and Stuttgart.

What cities and towns are in Arkansas County?

Arkansas County has 6 incorporated places. The most populous five are Stuttgart city, DeWitt city, Gillett city, Almyra town, and Humphrey city; 4,246 residents live outside any incorporated place.

Is Arkansas County part of a metropolitan area?

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

How many ZIP codes are in Arkansas County?

13 ZIP Code Tabulation Areas have land in Arkansas County, and 10 of them have most of their land inside the county. Census ZIP Code Tabulation Areas approximate USPS ZIP Code areas.

How does Arkansas County compare with U.S. states?

It has less land than every state. Rhode Island, the smallest, has 1 times as much land.

How many acres of land are in Arkansas County?

The land measurement converts to approximately 634,970 acres. Including water, total area is approximately 664,795 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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