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County ZIP codes · South Dakota · FIPS 46063

Harding County, SD ZIP Codes

Harding County, South Dakota has 12 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 6 of the residential ones lie mainly in Harding County and 6 mainly in a neighboring county; 8 cross the county line. Median household income ranges from $64,487 in 58623 (Bowman) to $77,689 in 57717 (Belle Fourche) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Harding County?

57649 · Prairie City: $85k57650 · Ralph: –57651 · Reva: $95k57717 · Belle Fourche: $78k57720 · Buffalo: $79k57724 · Camp Crook: $61k57755 · Ludlow: $68k57760 · Newell: $65k57776 · Redig: –58623 · Bowman: $65k58649 · Reeder: $69k58653 · Scranton: $86k5771757720577605764958623577245864958653577555777657649 · Prairie City: $85k57650 · Ralph: –57651 · Reva: $95k57717 · Belle Fourche: $78k57720 · Buffalo: $79k57724 · Camp Crook: $61k57755 · Ludlow: $68k57760 · Newell: $65k57776 · Redig: –58623 · Bowman: $65k58649 · Reeder: $69k58653 · Scranton: $86k5771757720577605764958623577245864958653577555777657649 · Prairie City: $85k57650 · Ralph: –57651 · Reva: $95k57717 · Belle Fourche: $78k57720 · Buffalo: $79k57724 · Camp Crook: $61k57755 · Ludlow: $68k57760 · Newell: $65k57776 · Redig: –58623 · Bowman: $65k58649 · Reeder: $69k58653 · Scranton: $86k5771757720577605764958623577245864957755
The residential ZIP codes of Harding 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).

How different are its ZIP codes?

They carry 12 postal town names.

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

All 12 residential ZIP codes in Harding County

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

Residential ZIP codes mainly in Harding County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
57720 Buffalo 518 0 $79k $157k 100%
57651 Reva 191 0 $95k $213k 85%
57724 Camp Crook 167 0 $61k – 63%
57755 Ludlow 101 0 $68k $164k 100%
57650 Ralph 17 0 – – 100%
57776 Redig no residents 0 – – 100%

Partly in Harding County

Residential ZIP codes mainly in another county that reach at least 1% into Harding County, by their share here
In this county
57649 Prairie City 273 1 $85k – 24%
58653 Scranton 700 2 $86k $164k 15%
58649 Reeder 354 1 $69k $73k 9%
57717 Belle Fourche 8,983 7 $78k $249k 9%
58623 Bowman 1,953 4 $65k $181k 2%
57760 Newell 966 1 $65k $162k 2%

Download the 12 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?

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

Share of each ZIP code's land in Harding County and in the neighboring counties
ZIPIn HardingElsewhere
577179%Butte County65%; Crook County15%; Carter County10%
586232%Bowman County73%; Slope County25%
577602%Butte County98%
5865315%Bowman County71%; Slope County14%
586499%Adams County73%; Hettinger County11%; Bowman County5%; Slope County2%
5764924%Perkins County76%
5765185%Perkins County15%
5772463%Carter County37%

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

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

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Harding County's ZIP codes use 3 prefixes: 576, 577 and 586.

Three-digit prefixes of Harding 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 Harding County's
PrefixSectional centerHereAll codes
576Bismarck, ND (SCF 585)332
577Rapid City, SD (SCF 577)658
586Bismarck, ND (SCF 585)332

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