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County ZIP codes · Kansas · FIPS 20061

Geary County, KS ZIP Codes

Geary County, Kansas has 8 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 2 of the residential ones lie mainly in Geary County and 6 mainly in a neighboring county; 7 cross the county line. Median household income ranges from $51,610 in 66442 (Fort Riley) to $93,889 in 66514 (Milford) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Geary County?

66441 · Junction City: $60k66442 · Fort Riley: $52k66502 · Manhattan: $55k66514 · Milford: $94k66834 · Alta Vista: $60k66849 · Dwight: $62k66872 · White City: $59k67487 · Wakefield: $68k665026644166834668726748766849664426651466441 · Junction City: $60k66442 · Fort Riley: $52k66502 · Manhattan: $55k66514 · Milford: $94k66834 · Alta Vista: $60k66849 · Dwight: $62k66872 · White City: $59k67487 · Wakefield: $68k665026644166834668726748766849664426651466441 · Junction City: $60k66442 · Fort Riley: $52k66502 · Manhattan: $55k66514 · Milford: $94k66834 · Alta Vista: $60k66849 · Dwight: $62k66872 · White City: $59k67487 · Wakefield: $68k66502664416683466872674876684966442
The residential ZIP codes of Geary 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 $54,833 and $67,813.

They carry 8 postal town names: Manhattan, Junction City, Fort Riley, Wakefield, Milford, Alta Vista, White City, Dwight.

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

All 8 residential ZIP codes in Geary County

2 ZIP codes lie mainly in Geary County; 6 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Geary County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
66441 Junction City 25,828 111 $60k $170k 94%
66514 Milford 1,350 80 $94k $227k 100%

Partly in Geary County

Residential ZIP codes mainly in another county that reach at least 1% into Geary County, by their share here
In this county
66849 Dwight 531 8 $62k $110k 49%
66442 Fort Riley 16,890 497 $52k – 39%
66834 Alta Vista 856 5 $60k $124k 24%
66502 Manhattan 43,693 197 $55k $223k 16%
66872 White City 807 6 $59k $77k 6%
67487 Wakefield 1,515 15 $68k $184k 6%

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 Geary County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in Geary County and in the neighboring counties
ZIPIn GearyElsewhere
6650216%Riley County60%; Pottawatomie County21%; Wabaunsee County4%
6644194%Dickinson County5%; Riley County1%
6644239%Riley County61%
674876%Clay County81%; Dickinson County13%
6683424%Wabaunsee County56%; Morris County20%
668726%Morris County94%
6684949%Morris County51%

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

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

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Geary County's ZIP codes use 4 prefixes: 664, 665, 668 and 674.

Three-digit prefixes of Geary 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 Geary County's
PrefixSectional centerHereAll codes
664Kansas City, MO (SCF 640)237
665Kansas City, MO (SCF 640)244
668Kansas City, MO (SCF 640)336
674Wichita, KS (SCF 670)158

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