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City ZIP codes · South Dakota

Spearfish, SD ZIP Codes

2 ZIP codes use the postal name Spearfish, South Dakota (Census 2020 ZCTAs and GeoNames postal codes, October 2026), all residential. Spearfish's most populous ZIP code is 57783, with 17,248 people (ACS 2020-2024); 7% of its land is in the city of Spearfish.

  • ACS2020-24
  • Census2020
  • GeoNames2026

Where are Spearfish's ZIP codes?

57783: $75k median household income57799: – median household income5778357783: $75k median household income57799: – median household income5778357783: $75k median household income57799: – median household income57783
The 2 residential ZIP codes named Spearfish, shaded by median household income in national fifths (ACS 2020-2024). Select a ZIP to open it. <$54.1k$98.1k+no figure

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

All 2 residential ZIP codes of Spearfish

Residential ZIP codes with the postal name Spearfish, SD, largest first (ACS 2020-2024); sort by any column
County
57783 Lawrence County 17,248 81 $75k $373k
57799 Lawrence County 568 3,021 – –

Download the 2 ZIP codes as CSV

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; 2023 Gazetteer land areas (2020 ZCTAs); town names from simplemaps US ZIP Codes (CC BY 4.0) and GeoNames (CC BY 4.0).

Which counties do Spearfish's ZIP codes reach?

Spearfish's residential ZIP codes lie in 2 counties: Lawrence County (2 ZIP codes mainly there), Butte County (part of a ZIP code).

Which places do Spearfish's ZIP codes cover?

A postal name is not a city limit. By the Census Bureau's places, Spearfish's residential ZIP codes cover Spearfish itself and 2 other places, each listed with the ZIP codes that have at least 5% of their land in it or hold most of the place:

  • Mountain Plains census-designated 57783
  • North Spearfish census-designated 57783

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

Which first three digits do Spearfish'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 Spearfish starts with 577.

Three-digit prefixes of Spearfish'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 Spearfish's
PrefixSectional centerHereAll codes
577 Rapid City, SD (SCF 577) 2 58

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