County outline
Where Poinsett County is located
Area breakdown
Land accounts for 99.3% of Poinsett County’s measured area and water for 0.7%. Its combined area converts to 1,977.9 square kilometers or approximately 488,742 acres.
Green: land · blue: water
| Measurement | Square miles | Square kilometers | Acres |
|---|---|---|---|
| Land | 758.295 | 1,963.975 | 485,308.8 |
| Water | 5.364 | 13.893 | 3,433 |
| Total | 763.659 | 1,977.868 | 488,741.8 |
How Poinsett County compares
By original Census land area, Poinsett County ranks #22 of 75 in Arkansas and #1158 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.
Its land area is 1.172 times the Arkansas county-equivalent median of 647.2 square miles. It accounts for 1.5% of the combined county land area in the state.
See the complete Arkansas ranking · What counts as a county equivalent?
Population and density of Poinsett County
The Census Bureau estimates that 22,483 people lived in Poinsett County on July 1, 2025. That ranks #1,757 of 3,222 county equivalents nationally and #26 of 75 in Arkansas. Since the April 1, 2020 estimates base of 22,963, the population has declined by 480 (−2.1%), compared with +3.4% for Arkansas as a whole.
With 758.3 square miles of land, that is 30 people per square mile (11 per km²), placing Poinsett County #2,016 nationally for density and #32 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.
| July 1 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|
| Estimate | 22,953 | 22,658 | 22,424 | 22,402 | 22,318 | 22,483 |
| Change | — | −295 | −234 | −22 | −84 | +165 |
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 Poinsett County
8 incorporated places lie at least partly in Poinsett County. Together they are home to 15,151 people (67.4%); the other 7,332 (32.6%) live outside any incorporated place, in unincorporated communities and rural areas.
The largest is Trumann city, with 7,527 residents in the county. The county seat, Harrisburg city, has 2,217 residents. Among places with at least 1,000 residents in 2020, Trumann city grew fastest since then (+0.6%).
| Incorporated place | Population 2025 | Since 2020 | Land mi² |
|---|---|---|---|
| Trumann city | 7,527 | +0.6% | 5.852 |
| Harrisburg cityCounty seat | 2,217 | +0.3% | 2.396 |
| Marked Tree city | 2,208 | −3.2% | 5.772 |
| Lepanto city | 1,643 | −5.2% | 1.564 |
| Tyronza city | 721 | +0.4% | 1.555 |
| Weiner city | 613 | −5.1% | 1.364 |
| Fisher city | 171 | −4.5% | 0.298 |
| Waldenburg town | 51 | −5.6% | 0.136 |
Population: U.S. Census Bureau Vintage 2025 subcounty estimates, counting only the part of each place inside Poinsett County. Land: 2026 Census Gazetteer, for the whole place even where it extends into other counties. How communities are listed.
Metropolitan area
Poinsett County is an outlying county of the Jonesboro, AR Metropolitan Statistical Area. Its 2 county equivalents have 139,440 residents on 1,465.5 square miles of land; Poinsett County accounts for 51.7% of the land and 16.1% of the residents. By combined land it ranks #223 of 393 metropolitan areas, and #309 by population. It belongs to the Jonesboro-Paragould, AR Combined Statistical Area.
| County equivalent | Population 2025 | Land mi² |
|---|---|---|
| Craighead County | 116,957 | 707.2 |
| Poinsett County | 22,483 | 758.3 |
ZIP codes
11 ZIP Code Tabulation Areas have land in Poinsett County; 7 of them have most of their land inside the county, and the others mainly cover neighboring areas.
7232472354723657237772386724197242172429724327247272479
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 Poinsett County
Poinsett County shares a land border with 5 county equivalents. It has more land than 4 of them. The largest neighbor is Mississippi County (902.1 mi²) and the smallest is Crittenden County (611.8 mi²). Together with its neighbors, Poinsett County forms a block of 4,229.3 mi² of land, of which it holds 17.9%.
| Bordering county equivalent | Land mi² | Size vs. Poinsett | Compare |
|---|---|---|---|
| Mississippi County | 902.1 | 1.2× larger | Compare |
| Craighead County | 707.2 | 1.1× smaller | Compare |
| Jackson County | 633.6 | 1.2× smaller | Compare |
| Cross County | 616.3 | 1.2× smaller | Compare |
| Crittenden County | 611.8 | 1.2× smaller | Compare |
How big is Poinsett County compared with U.S. states?
Poinsett County has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 1.4 times as much. Arkansas’s county land could hold about 69 areas the size of Poinsett County.
Another way to picture it: the same land area would fill a square about 27.5 miles (44.3 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 Poinsett County?
Poinsett County has more land than 2,064 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 Poinsett County at #1,257 nationally by total area, 99 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 0.7%, compared with a national county-equivalent median of 1.2% — 0.5 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 Poinsett County in the national ranking. They can be in different states and are not necessarily geographic neighbors.
| Land rank | County equivalent | Land mi² | Comparison |
|---|---|---|---|
| #1157 | Pulaski County, Arkansas | 758.4 | Compare |
| #1158 | Poinsett County, Arkansas | 758.3 | This county |
| #1159 | Iron County, Wisconsin | 758.2 | 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 35.568825, -90.681161. 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: 1,963,975,392 m²; AWATER: 13,892,746 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 Poinsett County?
Poinsett County, Arkansas has 758.3 square miles (1,964 km²) of land and 5.364 square miles of water, for a total area of 763.7 square miles. It ranks #1158 of 3,222 U.S. county equivalents by land area.
Is Poinsett County the largest county in Arkansas?
No. Poinsett County ranks #22 of 75 in Arkansas by land area. The largest is Union County, with 1,039.1 square miles of land.
What counties border Poinsett County?
Poinsett County shares a land border with Craighead County, Cross County, Jackson County, Mississippi County, and Crittenden County.
What is the population of Poinsett County?
The Census Bureau estimates Poinsett County had 22,483 residents on July 1, 2025, ranking #1,757 of 3,222 county equivalents. That is 30 people per square mile of land.
What is the county seat of Poinsett County?
The county seat of Poinsett County is Harrisburg.
What cities and towns are in Poinsett County?
Poinsett County has 8 incorporated places. The most populous five are Trumann city, Harrisburg city, Marked Tree city, Lepanto city, and Tyronza city; 7,332 residents live outside any incorporated place.
Is Poinsett County part of a metropolitan area?
Yes. It is an outlying county of the Jonesboro, AR Metropolitan Statistical Area, which has 2 county equivalents and 139,440 residents.
How many ZIP codes are in Poinsett County?
11 ZIP Code Tabulation Areas have land in Poinsett County, and 7 of them have most of their land inside the county. Census ZIP Code Tabulation Areas approximate USPS ZIP Code areas.
How does Poinsett County compare with U.S. states?
It has less land than every state. Rhode Island, the smallest, has 1.4 times as much land.
How many acres of land are in Poinsett County?
The land measurement converts to approximately 485,309 acres. Including water, total area is approximately 488,742 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.