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County ZIP codes · Iowa · FIPS 19001

Adair County, IA ZIP Codes

Adair County, Iowa has 14 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 5 of the residential ones lie mainly in Adair County and 9 mainly in a neighboring county; 11 cross the county line. Median household income ranges from $58,015 in 50801 (Creston) to $92,083 in 50070 (Dexter) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Adair County?

50002 · Adair: $79k50020 · Anita: $75k50048 · Casey: $55k50070 · Dexter: $92k50155 · Macksburg: $33k50164 · Menlo: $80k50250 · Stuart: $71k50273 · Winterset: $83k50801 · Creston: $58k50837 · Bridgewater: $63k50846 · Fontanelle: $74k50849 · Greenfield: $65k50858 · Orient: $71k50859 · Prescott: $77k502735080150849500025025050020508585084650048508595007050164508375015550002 · Adair: $79k50020 · Anita: $75k50048 · Casey: $55k50070 · Dexter: $92k50155 · Macksburg: $33k50164 · Menlo: $80k50250 · Stuart: $71k50273 · Winterset: $83k50801 · Creston: $58k50837 · Bridgewater: $63k50846 · Fontanelle: $74k50849 · Greenfield: $65k50858 · Orient: $71k50859 · Prescott: $77k5027350801508495000250250500205085850846500485085950070508375015550002 · Adair: $79k50020 · Anita: $75k50048 · Casey: $55k50070 · Dexter: $92k50155 · Macksburg: $33k50164 · Menlo: $80k50250 · Stuart: $71k50273 · Winterset: $83k50801 · Creston: $58k50837 · Bridgewater: $63k50846 · Fontanelle: $74k50849 · Greenfield: $65k50858 · Orient: $71k50859 · Prescott: $77k50273508015084950002502505002050858508465004850859500705083750155
The residential ZIP codes of Adair 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?

The middle half of its ranked ZIP codes (1,000+ people living in households) report median household incomes between $64,821 and $79,071.

They carry 14 postal town names.

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

All 14 residential ZIP codes in Adair County

5 ZIP codes lie mainly in Adair County; 9 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Adair County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
50250 Stuart 2,832 26 $71k $210k 66%
50849 Greenfield 2,374 21 $65k $149k 100%
50846 Fontanelle 1,276 13 $74k $109k 100%
50858 Orient 848 11 $71k $150k 100%
50837 Bridgewater 282 5 $63k $117k 70%

Partly in Adair County

Residential ZIP codes mainly in another county that reach at least 1% into Adair County, by their share here
In this county
50164 Menlo 682 14 $80k $151k 48%
50002 Adair 1,496 14 $79k $238k 45%
50048 Casey 562 7 $55k $102k 44%
50070 Dexter 1,221 19 $92k $213k 28%
50020 Anita 1,197 12 $75k $155k 12%
50801 Creston 9,034 44 $58k $125k 11%
50155 Macksburg 94 3 $33k $95k 7%
50859 Prescott 676 8 $77k $164k 5%
50273 Winterset 8,950 46 $83k $219k 1%

Download the 14 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?

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

Share of each ZIP code's land in Adair County and in the neighboring counties
ZIPIn AdairElsewhere
5080111%Union County 69%; Adams County 21%
502731%Madison County 99%
5025066%Guthrie County 34%
5000245%Guthrie County 53%; Audubon County 1%
5007028%Madison County 40%; Dallas County 16%; Guthrie County 16%
5002012%Cass County 77%; Audubon County 10%; Guthrie County 1%
5016448%Guthrie County 52%
508595%Adams County 95%
5004844%Guthrie County 56%
5083770%Cass County 17%; Adams County 13%
501557%Madison County 93%

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

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

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Adair County's ZIP codes use 4 prefixes: 500, 501, 502 and 508.

Three-digit prefixes of Adair 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 Adair County's
PrefixSectional centerHereAll codes
500 Des Moines, IA (SCF 500) 4 68
501 Des Moines, IA (SCF 500) 2 69
502 Des Moines, IA (SCF 500) 2 65
508 Des Moines, IA (SCF 500) 6 28

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