| ZIP Codes: | 12 ZIP Codes (9 Standard, 3 PO Box, 0 Unique) [See All] |
| Area Codes: | 235 / 573 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 2:12:42 PM |
| Population: | 27,652 [See All] |
| FIPS: | 29069 |
| CBSA: | Kennett, MO |
| Land Area: | 537 sq mi |
| Water Area: | 5 sq mi |
| Coordinates: | 36.2743, -90.0853 |
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27,652 residents live across 12 ZIPs covering 537 sq mi, served by 12 distinct USPS-recognized cities.
Population moved from 31,598 to 27,652 from 2014 to 2024 — a -12.5% change. 3 ZIPs gained residents, 8 lost.
The county's wealthiest ZIP 63933 (Campbell, $55,582 median) and poorest ZIP 63829 (Cardwell, $28,281) are 33.3 miles apart — a 2.0× income gap across local geography.
Median home values vary 2.1× across this county — from $53,800 in 63837 (Clarkton) to $115,100 in 63857 (Kennett).
Density varies 10× across the county — from 11 people/sq mi in 63855 (Hornersville) to 117 in 63857 (Kennett).
Educational attainment ranges from 3.7% bachelor's+ in 63837 (Clarkton) to 16.0% in 63857 (Kennett) — the breadth of educational profiles across the area.
Within Missouri, this is the #39 most populous of 116 counties and ranks #109 for median household income .
Weighted by population, the typical household earns about $49,805 across the county — reflecting what a typical resident sees, not a simple ZIP average.
13.3% of adults age 25+ hold a bachelor's degree or higher (2,426 of 18,279 reporting).
9 Standard delivery, 3 PO Box only, 0 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.
Dunklin County lost 12.5% of residents between 2014 and 2024. ZIPs that shed the largest share:
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 63857 | Kennett | Standard | 11,930 | $55,188 | 102.3 | -7.9% |
| 63863 | Malden | Standard | 5,321 | $47,205 | 45.7 | -13.4% |
| 63933 | Campbell | Standard | 3,049 | $55,582 | 105.9 | -20.7% |
| 63876 | Senath | Standard | 2,071 | $34,837 | 62.8 | -12.9% |
| 63837 | Clarkton | Standard | 1,381 | $46,066 | 27.6 | -16.0% |
| 63852 | Holcomb | Standard | 1,172 | $46,971 | 55.6 | -10.5% |
| 63829 | Cardwell | Standard | 1,070 | $28,281 | 27.6 | 7.0% |
| 63855 | Hornersville | Standard | 854 | $50,278 | 74.3 | -25.5% |
| 63821 | Arbyrd | Standard | 616 | $40,238 | 35.4 | -41.4% |
| 63880 | Whiteoak | PO Box | 97 | — | 0.0 | 110.9% |
| 63847 | Gibson | PO Box | 91 | — | 0.0 | 26.4% |
| 63875 | Rives | PO Box | — | — | 0.0 | — |