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County ZIP codes · Iowa · FIPS 19039

Clarke County, IA ZIP Codes

Clarke County, Iowa has 9 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 4 of the residential ones lie mainly in Clarke County and 5 mainly in a neighboring county; 8 cross the county line.

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Clarke County?

50108 · Grand River: $38k50123 · Humeston: $63k50174 · Murray: $67k50210 · New Virginia: $88k50213 · Osceola: $73k50222 · Peru: $101k50257 · Truro: $94k50264 · Weldon: $65k50275 · Woodburn: $72k50213501745026450123502105010850275502575022250108 · Grand River: $38k50123 · Humeston: $63k50174 · Murray: $67k50210 · New Virginia: $88k50213 · Osceola: $73k50222 · Peru: $101k50257 · Truro: $94k50264 · Weldon: $65k50275 · Woodburn: $72k50213501745026450123502105010850275502575022250108 · Grand River: $38k50123 · Humeston: $63k50174 · Murray: $67k50210 · New Virginia: $88k50213 · Osceola: $73k50222 · Peru: $101k50257 · Truro: $94k50264 · Weldon: $65k50275 · Woodburn: $72k502135017450264501235021050108502755025750222
The residential ZIP codes of Clarke 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 9 residential ZIP codes in Clarke County

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

Residential ZIP codes mainly in Clarke County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
50213 Osceola 7,489 36 $73k $166k 100%
50174 Murray 1,259 12 $67k $132k 91%
50275 Woodburn 506 9 $72k $122k 95%
50264 Weldon 502 7 $65k $136k 55%

Partly in Clarke County

Residential ZIP codes mainly in another county that reach at least 1% into Clarke County, by their share here
In this county
50210 New Virginia 1,487 20 $88k $325k 21%
50257 Truro 914 21 $94k $226k 21%
50108 Grand River 376 5 $38k $46k 12%
50222 Peru 328 8 $101k $269k 3%
50123 Humeston 883 11 $63k $115k 2%

Download the 9 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 Clarke County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in Clarke County and in the neighboring counties
ZIPIn ClarkeElsewhere
5021021%Warren County 77%; Madison County 2%
5017491%Union County 9%
5025721%Madison County 76%; Warren County 4%
501232%Wayne County 80%; Lucas County 11%; Decatur County 7%
5027595%Lucas County 5%
5026455%Decatur County 45%
5010812%Decatur County 88%
502223%Madison County 97%

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

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

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Clarke County's ZIP codes use 2 prefixes: 501 and 502.

Three-digit prefixes of Clarke 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 Clarke County's
PrefixSectional centerHereAll codes
501 Des Moines, IA (SCF 500) 3 69
502 Des Moines, IA (SCF 500) 6 65

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