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zipcodes.pro — STATE/SD/COUNTY/FAULK

Faulk County, SD ZIP codes

Faulk County, SD has 4 ZIP codes, in 4 towns: 57438, 57435, 57466 and 57473. 2 more cross into it from neighbouring counties: 57465 and 57470.

The county seat is Faulkton.

ZIP codes
4
Partly in it
2 more
Towns
4
County seat
Faulkton
County FIPS
46049
Population
2,126
Median household income
$57,750
Land area
982 sq mi

Faulk County ZIP codes by town

Faulkton (county seat)
57438

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 Faulk County

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

Map of Faulk County ZIP codes

57435574385746657473

The ZIP codes of Faulk 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.

Faulk County in numbers

About 2,126 people live in Faulk County, in 862 households, the 57th most populous of South Dakota's 66 counties. The median household income is $57,750 a year, 23% below the South Dakota median of $75,081 (US: $80,734). The median owner-occupied home is valued at $147,500 (43% below the South Dakota median), and median gross rent is $771 a month. The median age is 42.9; 22.6% of adults 25 and over hold a bachelor's degree or higher (31.9% across South Dakota); the average commute takes 17 minutes.

Population2,126Faulk2,126
Households862Faulk862
Median age42.9Faulk42.9South Dakota38.0US 38.9
Median household income$57,750Faulk$57,750South Dakota$75,081US $80,734
Median home value$147,500Faulk$147,500South Dakota$257,400US $332,700
Median gross rent$771Faulk$771South Dakota$946US $1,413
Bachelor's degree or higher22.6%Faulk22.6%South Dakota31.9%US 35.7%
Mean commute16.9 minFaulk16.9 minSouth Dakota17.8 minUS 26.4 min
Population density2 / sq miFaulk2 / 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 Faulk County

Largest towns in Faulk County
TownZIP codesPopulation
Faulkton 1 670
Cresbard 1 122
Onaka 1 25
Seneca 1 22

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 Faulk County.

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

Every ZIP code in Faulk County, with figures

ZIP codes in Faulk County
ZIP City Type Population Median income Median home
57435 Cresbard , SD Standard 300 $97,750 $207,400
57438 Faulkton , SD Standard 973 $70,673 $134,400
57466 Onaka , SD Standard 192 $51,172 $38,900
57473 Seneca , SD Standard 246 $23,750 $177,600

Cite this page

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

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