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County ZIP codes · South Dakota · FIPS 46023

Charles Mix County, SD ZIP Codes

Charles Mix County, South Dakota has 10 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 7 of the residential ones lie mainly in Charles Mix County and 3 mainly in a neighboring county; 4 cross the county line. Median household income ranges from $62,135 in 57380 (Wagner) to $78,100 in 57369 (Platte) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Charles Mix County?

57313 · Armour: $89k57315 · Avon: $74k57329 · Dante: $62k57330 · Delmont: $72k57342 · Geddes: $75k57356 · Lake Andes: $54k57361 · Marty: $20k57367 · Pickstown: $87k57369 · Platte: $78k57380 · Wagner: $62k57369573805731357342573565731557330573295736757313 · Armour: $89k57315 · Avon: $74k57329 · Dante: $62k57330 · Delmont: $72k57342 · Geddes: $75k57356 · Lake Andes: $54k57361 · Marty: $20k57367 · Pickstown: $87k57369 · Platte: $78k57380 · Wagner: $62k573695738057313573425735657315573305732957313 · Armour: $89k57315 · Avon: $74k57329 · Dante: $62k57330 · Delmont: $72k57342 · Geddes: $75k57356 · Lake Andes: $54k57361 · Marty: $20k57367 · Pickstown: $87k57369 · Platte: $78k57380 · Wagner: $62k57369573805731357342573565731557330
The residential ZIP codes of Charles Mix 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 10 postal town names.

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

All 10 residential ZIP codes in Charles Mix County

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

Residential ZIP codes mainly in Charles Mix County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
57380 Wagner 3,316 12 $62k $158k 100%
57369 Platte 2,630 6 $78k $237k 74%
57356 Lake Andes 1,959 12 $54k $114k 100%
57342 Geddes 393 2 $75k $143k 100%
57329 Dante 317 6 $62k $153k 100%
57367 Pickstown 291 61 $87k $288k 100%
57361 Marty 278 112 $20k – 100%

Partly in Charles Mix County

Residential ZIP codes mainly in another county that reach at least 1% into Charles Mix County, by their share here
In this county
57313 Armour 1,220 7 $89k $117k 34%
57330 Delmont 594 5 $72k $144k 26%
57315 Avon 1,094 8 $74k $170k 4%

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?

4 ZIP codes of Charles Mix County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in Charles Mix County and in the neighboring counties
ZIPIn Charles MixElsewhere
5736974%Brule County23%; Douglas County2%
5731334%Douglas County66%
573154%Bon Homme County96%
5733026%Douglas County61%; Hutchinson County13%

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

Which first three digits do Charles Mix 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 Charles Mix County starts with 573.

Three-digit prefixes of Charles Mix 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 Charles Mix County's
PrefixSectional centerHereAll codes
573Dakota Central, SD (SCF 572)1062

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