Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

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zipcodes.pro — STATE/SD/COUNTY/CORSON

Corson County, SD ZIP codes

There are 11 ZIP codes in Corson County, SD, in 11 towns, from 57621 to 57660. The largest are 57642 (Mc Laughlin), 57633 (Isabel) and 57621 (Bullhead). 2 more cross into it from neighbouring counties: 57656 and 57644.

The county seat is McIntosh.

ZIP codes
11
Partly in it
2 more
Towns
11
County seat
McIntosh
County FIPS
46031
Population
3,806
Median household income
$46,406
Land area
2,470 sq mi

Corson County ZIP codes by town

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.

ZIP codes partly in Corson County

These ZIP codes lie mostly in a neighbouring county but each cover a twentieth or more of Corson County.

Map of Corson County ZIP codes

5762157633576345763957641576425764557657576585765957660

The ZIP codes of Corson 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.

Corson County in numbers

About 3,806 people live in Corson County, in 1,128 households, the 42nd most populous of South Dakota's 66 counties. The median household income is $46,406 a year, 38% below the South Dakota median of $75,081 (US: $80,734). The median owner-occupied home is valued at $69,800 (73% below the South Dakota median), and median gross rent is $496 a month. The median age is 29.9; 19.0% of adults 25 and over hold a bachelor's degree or higher (31.9% across South Dakota); the average commute takes 21 minutes.

Population3,806Corson3,806
Households1,128Corson1,128
Median age29.9Corson29.9South Dakota38.0US 38.9
Median household income$46,406Corson$46,406South Dakota$75,081US $80,734
Median home value$69,800Corson$69,800South Dakota$257,400US $332,700
Median gross rent$496Corson$496South Dakota$946US $1,413
Bachelor's degree or higher19.0%Corson19.0%South Dakota31.9%US 35.7%
Mean commute21.0 minCorson21.0 minSouth Dakota17.8 minUS 26.4 min
Population density2 / sq miCorson2 / 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 Corson County

Largest towns in Corson County
TownZIP codesPopulation
Mc Laughlin 1 1,969
Bullhead 1 294
Little Eagle 1 275
Trail City 1 247
Mc Intosh 1 215
Isabel 1 214
Wakpala 1 144
Keldron 1 131
Watauga 1 111
Morristown 1 76
Walker 1 16

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 Corson County.

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

Every ZIP code in Corson County, with figures

ZIP codes in Corson County
ZIP City Type Population Median income Median home
57621 Bullhead , SD Standard 294 $32,589 —
57633 Isabel , SD Standard 445 $78,750 $70,000
57634 Keldron , SD Standard 131 $88,125 $151,600
57639 Little Eagle , SD Standard 290 $21,250 —
57641 Mc Intosh , SD Standard 215 $83,750 $77,500
57642 Mc Laughlin , SD Standard 1,969 $58,750 $70,000
57645 Morristown , SD Standard 184 $56,667 $52,100
57657 Trail City , SD Standard 247 — $57,100
57658 Wakpala , SD Standard 319 $23,000 $85,000
57659 Walker , SD Standard 16 $103,333 —
57660 Watauga , SD Standard 111 $67,292 $86,300

Cite this page

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

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