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zipcodes.pro — STATE/SD/COUNTY/HARDING

Harding County, SD ZIP codes

Harding County, SD has 6 ZIP codes, in 6 towns: 57720, 57650, 57651, 57724, 57755 and 57776.

The county seat is Buffalo.

ZIP codes
6
Towns
6
County seat
Buffalo
County FIPS
46063
Population
1,148
Median household income
$80,441
Land area
2,672 sq mi

Harding County ZIP codes by town

Buffalo (county seat)
57720

Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.

Map of Harding County ZIP codes

576505765157720577245775557776

The ZIP codes of Harding County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Harding County in numbers

About 1,148 people live in Harding County, in 498 households, the 65th most populous of South Dakota's 66 counties. The median household income is $80,441 a year, 7% above the South Dakota median of $75,081 (US: $80,734). The median owner-occupied home is valued at $166,100 (35% below the South Dakota median), and median gross rent is $521 a month. The median age is 46.3; 30.4% of adults 25 and over hold a bachelor's degree or higher (31.9% across South Dakota); the average commute takes 19 minutes.

Population1,148Harding1,148
Households498Harding498
Median age46.3Harding46.3South Dakota38.0US 38.9
Median household income$80,441Harding$80,441South Dakota$75,081US $80,734
Median home value$166,100Harding$166,100South Dakota$257,400US $332,700
Median gross rent$521Harding$521South Dakota$946US $1,413
Bachelor's degree or higher30.4%Harding30.4%South Dakota31.9%US 35.7%
Mean commute18.7 minHarding18.7 minSouth Dakota17.8 minUS 26.4 min
Population density0 / sq miHarding0 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.

Largest towns in Harding County

Largest towns in Harding County
TownZIP codesPopulation
Buffalo 1 278
Reva 1 191
Ludlow 1 101
Camp Crook 1 41
Ralph 1 17

Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.

Neighbouring counties

Counties that share a ZIP code with Harding County.

Not sure you are in Harding County? What county am I in? answers from your location, near a county line included.

Every ZIP code in Harding County, with figures

ZIP codes in Harding County
ZIP City Type Population Median income Median home
57650 Ralph , SD Standard 17 — —
57651 Reva , SD Standard 191 $94,559 $212,500
57720 Buffalo , SD Standard 518 $79,091 $157,000
57724 Camp Crook , SD Standard 167 $61,146 —
57755 Ludlow , SD Standard 101 $68,125 $164,100
57776 Redig , SD Standard 0 — —

Cite this page

zipcodes.pro. “Harding County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/sd/county/harding

Underlying data is public domain or openly licensed — sources, vintages and licences.