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County ZIP codes · South Dakota · FIPS 46069

Hyde County, SD ZIP Codes

Hyde County, South Dakota has 5 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 3 of the residential ones lie mainly in Hyde County and 2 mainly in a neighboring county; 2 cross the county line.

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Hyde County?

57345 · Highmore: $76k57346 · Stephan: –57371 · Ree Heights: $74k57540 · Holabird: –57564 · Onida: $74k5734557564573715754057345 · Highmore: $76k57346 · Stephan: –57371 · Ree Heights: $74k57540 · Holabird: –57564 · Onida: $74k5734557564573715754057345 · Highmore: $76k57346 · Stephan: –57371 · Ree Heights: $74k57540 · Holabird: –57564 · Onida: $74k57345575645737157540
The residential ZIP codes of Hyde 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 5 residential ZIP codes in Hyde County

3 ZIP codes lie mainly in Hyde County; 2 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Hyde County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
57345 Highmore 941 1 $76k $172k 100%
57540 Holabird 223 1 – $258k 100%
57346 Stephan 13 47 – – 100%

Partly in Hyde County

Residential ZIP codes mainly in another county that reach at least 1% into Hyde County, by their share here
In this county
57371 Ree Heights 238 1 $74k – 3%
57564 Onida 962 2 $74k $211k 2%

Download the 5 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?

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

Share of each ZIP code's land in Hyde County and in the neighboring counties
ZIPIn HydeElsewhere
575642%Sully County 98%
573713%Hand County 97%

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

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

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Hyde County's ZIP codes use 2 prefixes: 573 and 575.

Three-digit prefixes of Hyde 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 Hyde County's
PrefixSectional centerHereAll codes
573 Dakota Central, SD (SCF 572) 3 62
575 Dakota Central, SD (SCF 572) 2 43

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