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County ZIP codes · South Dakota · FIPS 46049

Faulk County, SD ZIP Codes

Faulk County, South Dakota has 10 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 4 of the residential ones lie mainly in Faulk County and 6 mainly in a neighboring county; 9 cross the county line.

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Faulk County?

57424 · Ashton: $75k57435 · Cresbard: $98k57438 · Faulkton: $71k57460 · Mansfield: $140k57465 · Northville: $120k57466 · Onaka: $51k57467 · Orient: $59k57469 · Redfield: $66k57470 · Rockham: $108k57473 · Seneca: $24k5743857469574675742457470574355747357465574605746657424 · Ashton: $75k57435 · Cresbard: $98k57438 · Faulkton: $71k57460 · Mansfield: $140k57465 · Northville: $120k57466 · Onaka: $51k57467 · Orient: $59k57469 · Redfield: $66k57470 · Rockham: $108k57473 · Seneca: $24k5743857469574675742457470574355747357465574605746657424 · Ashton: $75k57435 · Cresbard: $98k57438 · Faulkton: $71k57460 · Mansfield: $140k57465 · Northville: $120k57466 · Onaka: $51k57467 · Orient: $59k57469 · Redfield: $66k57470 · Rockham: $108k57473 · Seneca: $24k57438574695746757424574705743557473574655746057466
The residential ZIP codes of Faulk County (whole outlines, including the parts in neighboring counties), shaded by median household income in national fifths (ACS 2020-2024). <$54.1k$98.1k+no figure

Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).

All 10 residential ZIP codes in Faulk County

4 ZIP codes lie mainly in Faulk County; 6 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Faulk County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
57438 Faulkton 973 2 $71k $134k 100%
57435 Cresbard 300 2 $98k $207k 77%
57473 Seneca 246 1 $24k $178k 82%
57466 Onaka 192 1 $51k $39k 76%

Partly in Faulk County

Residential ZIP codes mainly in another county that reach at least 1% into Faulk County, by their share here
In this county
57470 Rockham 242 2 $108k $201k 40%
57465 Northville 438 3 $120k $132k 39%
57467 Orient 410 2 $59k – 10%
57460 Mansfield 257 2 $140k $234k 10%
57424 Ashton 437 3 $75k – 7%
57469 Redfield 2,866 10 $66k $153k 6%

Download the 10 ZIP codes as CSV

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).

Which ZIP codes cross the county line?

9 ZIP codes of Faulk County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in Faulk County and in the neighboring counties
ZIPIn FaulkElsewhere
574696%Spink County 77%; Hand County 17%
5746539%Spink County 61%
574247%Spink County 93%
5746710%Hand County 90%
5743577%Edmunds County 23%
5746010%Brown County 59%; Edmunds County 20%; Spink County 11%
5747382%Potter County 18%
5747040%Hand County 60%
5746676%Edmunds County 24%

Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).

Which first three digits do Faulk County's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Every ZIP code of Faulk County starts with 574.

Three-digit prefixes of Faulk County's ZIP codes, the sectional center for each (USPS labeling list L005, effective October 1, 2026) and how many of the prefix's codes are Faulk County's
PrefixSectional centerHereAll codes
574 Dakota Central, SD (SCF 572) 10 50

Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.