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County ZIP codes · South Dakota · FIPS 46003

Aurora County, SD ZIP Codes

Aurora County, South Dakota has 8 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 3 of the residential ones lie mainly in Aurora County and 5 mainly in a neighboring county; 7 cross the county line. Median household income ranges from $70,404 in 57385 (Woonsocket) to $86,985 in 57328 (Corsica) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Aurora County?

57328 · Corsica: $87k57359 · Letcher: $107k57363 · Mount Vernon: $78k57368 · Plankinton: $75k57375 · Stickney: $70k57382 · Wessington Springs: $79k57383 · White Lake: $63k57385 · Woonsocket: $70k573825738357368573855732857359573635737557328 · Corsica: $87k57359 · Letcher: $107k57363 · Mount Vernon: $78k57368 · Plankinton: $75k57375 · Stickney: $70k57382 · Wessington Springs: $79k57383 · White Lake: $63k57385 · Woonsocket: $70k573825738357368573855732857359573635737557328 · Corsica: $87k57359 · Letcher: $107k57363 · Mount Vernon: $78k57368 · Plankinton: $75k57375 · Stickney: $70k57382 · Wessington Springs: $79k57383 · White Lake: $63k57385 · Woonsocket: $70k5738257383573685738557328573595736357375
The residential ZIP codes of Aurora 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 8 postal town names: Woonsocket, Corsica, Wessington Springs, Plankinton, White Lake, Mount Vernon, Letcher, Stickney.

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

All 8 residential ZIP codes in Aurora County

3 ZIP codes lie mainly in Aurora County; 5 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Aurora County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
57368 Plankinton 1,068 5 $75k $203k 100%
57383 White Lake 899 4 $63k $109k 95%
57375 Stickney 573 4 $70k $151k 99%

Partly in Aurora County

Residential ZIP codes mainly in another county that reach at least 1% into Aurora County, by their share here
In this county
57359 Letcher 652 4 $107k $167k 15%
57382 Wessington Springs 1,180 3 $79k $165k 12%
57385 Woonsocket 1,408 6 $70k $127k 4%
57363 Mount Vernon 866 5 $78k $203k 2%
57328 Corsica 1,290 8 $87k $211k 2%

Download the 8 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?

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

Share of each ZIP code's land in Aurora County and in the neighboring counties
ZIPIn AuroraElsewhere
573854%Sanborn County66%; Jerauld County30%
573282%Douglas County98%
5738212%Jerauld County85%; Beadle County3%
5738395%Brule County5%
573632%Davison County91%; Sanborn County6%
5735915%Sanborn County76%; Davison County9%
5737599%Davison County1%

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

Which first three digits do Aurora 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 Aurora County starts with 573.

Three-digit prefixes of Aurora 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 Aurora County's
PrefixSectional centerHereAll codes
573Dakota Central, SD (SCF 572)862

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