County outline
Where Arkansas County is located
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
| Measurement | Square miles | Square kilometers | Acres |
|---|---|---|---|
| Land | 992.14 | 2,569.631 | 634,969.6 |
| Water | 46.602 | 120.699 | 29,825.3 |
| Total | 1,038.742 | 2,690.329 | 664,794.9 |
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.
| July 1 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|
| Estimate | 17,106 | 16,670 | 16,464 | 16,334 | 16,092 | 15,836 |
| 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 place | Population 2025 | Since 2020 | Land mi² |
|---|---|---|---|
| Stuttgart cityCounty seat | 7,525 | −8.9% | 7.413 |
| DeWitt cityCounty seat | 2,791 | −8.3% | 2.992 |
| Gillett city | 619 | +9.6% | 0.996 |
| Almyra town | 237 | −7.8% | 0.388 |
| Humphrey cityAlso in 1 other county | 227 | −7.3% | 1.306 |
| St. Charles town | 191 | −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%.
| Bordering county equivalent | Land mi² | Size vs. Arkansas | Compare |
|---|---|---|---|
| Jefferson County | 872.3 | 1.1× smaller | Compare |
| Lonoke County | 771.7 | 1.3× smaller | Compare |
| Desha County | 741.2 | 1.3× smaller | Compare |
| Phillips County | 690.4 | 1.4× smaller | Compare |
| Prairie County | 647.5 | 1.5× smaller | Compare |
| Monroe County | 607.5 | 1.6× smaller | Compare |
| Lincoln County | 559.5 | 1.8× smaller | Compare |
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.
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.
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 rank | County equivalent | Land mi² | Comparison |
|---|---|---|---|
| #692 | Floyd County, Texas | 992.1 | Compare |
| #693 | Arkansas County, Arkansas | 992.1 | This county |
| #694 | York County, Maine | 991.2 | 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 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.
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.