Grant County area

Grant County, Arkansas covers 633 square miles: 631.9 square miles of land and 1.118 square miles of water. Its county seat is Sheridan. An estimated 18,756 people lived there in 2025.

Official Census measurements · GEOID 050532026 Gazetteer · retrieved September 27, 2026
Land area631.9 mi²
Water area1.118 mi²
Population (2025)18,756
People per mi²30

County outline

Generalized outline of Grant 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 Grant County is located

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

Area breakdown

Land accounts for 99.8% of Grant County’s measured area and water for 0.2%. Its combined area converts to 1,639.5 square kilometers or approximately 405,124 acres.

Green: land · blue: water

MeasurementSquare milesSquare kilometersAcres
Land631.8881,636.582404,408.3
Water1.1182.896715.5
Total633.0061,639.478405,123.8

How Grant County compares

By original Census land area, Grant County ranks #43 of 75 in Arkansas and #1516 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.

Its land area is 0.976 times the Arkansas county-equivalent median of 647.2 square miles. It accounts for 1.2% of the combined county land area in the state.

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

Population and density of Grant County

The Census Bureau estimates that 18,756 people lived in Grant County on July 1, 2025. That ranks #1,951 of 3,222 county equivalents nationally and #37 of 75 in Arkansas. Since the April 1, 2020 estimates base of 17,959, the population has grown by 797 (+4.4%), compared with +3.4% for Arkansas as a whole.

With 631.9 square miles of land, that is 30 people per square mile (11 per km²), placing Grant County #2,013 nationally for density and #30 in Arkansas. The median county equivalent has 47 people per square mile; the Arkansas median is 28. Put another way, there are about 22 acres of land per resident.

Estimated population, 2020–2025 · line scaled to this county’s own range
July 1202020212022202320242025
Estimate18,01618,11618,11418,40918,59718,756
Change—+100−2+295+188+159

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 Grant County

5 incorporated places lie at least partly in Grant County. Together they are home to 6,950 people (37.1%); the other 11,806 (62.9%) live outside any incorporated place, in unincorporated communities and rural areas.

The largest is Sheridan city, with 5,406 residents in the county.

Incorporated placePopulation 2025Since 2020Land mi²
Sheridan cityCounty seat5,406+7.6%12.4
Tull town499+3.1%4.032
Leola town471+3.3%0.854
Prattsville town299+3.1%1.617
Poyen town275+5%0.306

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

Metropolitan area

Grant County is an outlying county of the Little Rock-North Little Rock-Conway, AR Metropolitan Statistical Area. Its 6 county equivalents have 777,607 residents on 4,084.1 square miles of land; Grant County accounts for 15.5% of the land and 2.4% of the residents. By combined land it ranks #72 of 393 metropolitan areas, and #81 by population. It belongs to the Little Rock-North Little Rock, AR Combined Statistical Area.

County equivalentPopulation 2025Land mi²
Pulaski County404,611758.4
Faulkner County133,979647.2
Saline County133,288723.5
Lonoke County76,664771.7
Grant County18,756631.9
Perry County10,309551.3

ZIP codes

14 ZIP Code Tabulation Areas have land in Grant County; 4 of them have most of their land inside the county, and the others mainly cover neighboring areas.

7160271603720117201572057720657207972084721047212872129721327215072167

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 Grant County

Grant County shares a land border with 6 county equivalents. It has more land than 2 of them. The largest neighbor is Jefferson County (872.3 mi²) and the smallest is Cleveland County (597.9 mi²). Together with its neighbors, Grant County forms a block of 4,866.3 mi² of land, of which it holds 13%.

Map of Grant County and the 6 county equivalents that border it Jefferson County, Arkansas: 872.3 mi² landSaline County, Arkansas: 723.5 mi² landDallas County, Arkansas: 667.3 mi² landHot Spring County, Arkansas: 614.9 mi² landCleveland County, Arkansas: 597.9 mi² landPulaski County, Arkansas: 758.4 mi² land
Grant 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. GrantCompare
Jefferson County872.31.4× largerCompare
Pulaski County758.41.2× largerCompare
Saline County723.51.1× largerCompare
Dallas County667.31.1× largerCompare
Hot Spring County614.9about the sameCompare
Cleveland County597.91.1× smallerCompare

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

Grant County has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 1.6 times as much. Arkansas’s county land could hold about 82 areas the size of Grant County.

Land area: Grant County and the closest-sized states
Grant County631.9 mi²
Rhode Island1,033.9 mi²

Another way to picture it: the same land area would fill a square about 25.1 miles (40.5 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 Grant County?

Grant County has more land than 1,706 of the other 3,221 county equivalents in the dataset.

Land area compared with the typical county equivalent
Grant County631.9 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 Grant County at #1,634 nationally by total area, 118 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 0.2%, compared with a national county-equivalent median of 1.2% — 1 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 Grant County in the national ranking. They can be in different states and are not necessarily geographic neighbors.

Land rankCounty equivalentLand mi²Comparison
#1515Yuba County, California632Compare
#1516Grant County, Arkansas631.9This county
#1517Lafayette County, Mississippi631.7Compare

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 34.285568, -92.422979. 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: 1,636,581,711 m²; AWATER: 2,896,901 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 Grant County?

Grant County, Arkansas has 631.9 square miles (1,636.6 km²) of land and 1.118 square miles of water, for a total area of 633 square miles. It ranks #1516 of 3,222 U.S. county equivalents by land area.

Is Grant County the largest county in Arkansas?

No. Grant County ranks #43 of 75 in Arkansas by land area. The largest is Union County, with 1,039.1 square miles of land.

What counties border Grant County?

Grant County shares a land border with Jefferson County, Saline County, Dallas County, Hot Spring County, Cleveland County, and Pulaski County.

What is the population of Grant County?

The Census Bureau estimates Grant County had 18,756 residents on July 1, 2025, ranking #1,951 of 3,222 county equivalents. That is 30 people per square mile of land.

What is the county seat of Grant County?

The county seat of Grant County is Sheridan.

What cities and towns are in Grant County?

Grant County has 5 incorporated places. The most populous are Sheridan city, Tull town, Leola town, Prattsville town, and Poyen town; 11,806 residents live outside any incorporated place.

Is Grant County part of a metropolitan area?

Yes. It is an outlying county of the Little Rock-North Little Rock-Conway, AR Metropolitan Statistical Area, which has 6 county equivalents and 777,607 residents.

How many ZIP codes are in Grant County?

14 ZIP Code Tabulation Areas have land in Grant 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 Grant County compare with U.S. states?

It has less land than every state. Rhode Island, the smallest, has 1.6 times as much land.

How many acres of land are in Grant County?

The land measurement converts to approximately 404,408 acres. Including water, total area is approximately 405,124 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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