| ZIP Codes: | 10 ZIP Codes (5 Standard, 3 PO Box, 2 Unique) [See All] |
| Area Codes: | 327 / 870 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 11:52:40 PM |
| Population: | 23,128 [See All] |
| FIPS: | 05019 |
| CBSA: | Arkadelphia, AR |
| Land Area: | 988 sq mi |
| Water Area: | 18 sq mi |
| Coordinates: | 34.0461, -93.1941 |
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23,128 residents live across 10 ZIPs covering 988 sq mi, served by 8 distinct USPS-recognized cities.
Population moved from 25,019 to 23,096 from 2014 to 2024 — a -7.7% change. 2 ZIPs gained residents, 5 lost.
The county's wealthiest ZIP 71923 (Arkadelphia, $56,089 median) and poorest ZIP 71962 (Okolona, $24,578) are 16.1 miles apart — a 2.3× income gap across local geography.
Median home values vary 1.7× across this county — from $100,200 in 71962 (Okolona) to $170,600 in 71923 (Arkadelphia).
Density varies 3792× across the county — from 4 people/sq mi in 71962 (Okolona) to 16,364 in 71999 (Arkadelphia).
Most of the decade's growth concentrated around Arkadelphia — top growth ZIPs averaged +20.6% over the past ten years ( 71998 , 71923 and 71921 ).
Educational attainment ranges from 14.1% bachelor's+ in 71962 (Okolona) to 30.3% in 71923 (Arkadelphia) — the breadth of educational profiles across the area.
Within Arkansas, this is the #28 most populous of 78 counties and ranks #69 for median household income .
Hosts 2 single-entity Unique ZIPs: 71998Ouachita Baptist University ; and 71999Henderson State University .
Weighted by population, the typical household earns about $53,698 across the county — reflecting what a typical resident sees, not a simple ZIP average.
25.6% of adults age 25+ hold a bachelor's degree or higher (3,505 of 13,697 reporting).
5 Standard delivery, 3 PO Box only, 2 single-entity Unique ZIPs serve this county.
A frontier county — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.
One ZIP holds the majority of this county's population — a sign of a county built around a single city or town.
Clark County lost 7.6% of residents between 2014 and 2024. ZIPs that shed the largest share:
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 71923 | Arkadelphia | Standard | 14,875 | $56,089 | 384.4 | -0.7% |
| 71921 | Amity | Standard | 3,427 | $54,271 | 235.0 | -11.1% |
| 71743 | Gurdon | Standard | 2,913 | $48,253 | 195.6 | -30.1% |
| 71962 | Okolona | Standard | 744 | $24,578 | 172.4 | -24.2% |
| 71998 | Arkadelphia | Unique | 669 | — | 0.0 | 73.8% |
| 71999 | Arkadelphia | Unique | 450 | — | 0.0 | -30.7% |
| 71728 | Curtis | PO Box | 32 | — | 0.0 | — |
| 71772 | Whelen Springs | PO Box | 18 | — | 0.0 | — |
| 71721 | Beirne | PO Box | 0 | — | 0.0 | — |
| 71920 | Alpine | Standard | — | — | 0.0 | — |