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County ZIP codes · Kansas · FIPS 20005

Atchison County, KS ZIP Codes

Atchison County, Kansas has 10 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 5 of the residential ones lie mainly in Atchison County and 5 mainly in a neighboring county; 7 cross the county line. Median household income ranges from $53,348 in 66439 (Horton) to $77,222 in 66060 (Nortonville) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Atchison County?

66002 · Atchison: $61k66016 · Cummings: $76k66023 · Effingham: $56k66041 · Lancaster: $57k66058 · Muscotah: $97k66060 · Nortonville: $77k66088 · Valley Falls: $76k66424 · Everest: $59k66436 · Holton: $71k66439 · Horton: $53k6600266436660886643966023660416606066424660166605866002 · Atchison: $61k66016 · Cummings: $76k66023 · Effingham: $56k66041 · Lancaster: $57k66058 · Muscotah: $97k66060 · Nortonville: $77k66088 · Valley Falls: $76k66424 · Everest: $59k66436 · Holton: $71k66439 · Horton: $53k6600266436660886643966023660416606066424660166605866002 · Atchison: $61k66016 · Cummings: $76k66023 · Effingham: $56k66041 · Lancaster: $57k66058 · Muscotah: $97k66060 · Nortonville: $77k66088 · Valley Falls: $76k66424 · Everest: $59k66436 · Holton: $71k66439 · Horton: $53k660026643666088664396602366041660606642466016
The residential ZIP codes of Atchison 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 $55,759 and $71,016.

They carry 10 postal town names.

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

All 10 residential ZIP codes in Atchison County

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

Residential ZIP codes mainly in Atchison County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
66002 Atchison 13,276 70 $61k $149k 74%
66023 Effingham 1,189 17 $56k $110k 100%
66041 Lancaster 614 11 $57k $129k 87%
66016 Cummings 559 18 $76k $293k 100%
66058 Muscotah 378 11 $97k $127k 100%

Partly in Atchison County

Residential ZIP codes mainly in another county that reach at least 1% into Atchison County, by their share here
In this county
66060 Nortonville 1,325 22 $77k $156k 49%
66439 Horton 2,578 30 $53k $91k 39%
66424 Everest 486 9 $59k $131k 32%
66436 Holton 5,537 30 $71k $213k 14%
66088 Valley Falls 2,697 22 $76k $196k 3%

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?

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

Share of each ZIP code's land in Atchison County and in the neighboring counties
ZIPIn AtchisonElsewhere
6600274%Doniphan County 18%; Jefferson County 5%; Leavenworth County 4%
6643614%Jackson County 85%; Jefferson County 1%
660883%Jefferson County 97%
6643939%Brown County 58%; Jackson County 4%
6606049%Jefferson County 51%
6604187%Doniphan County 9%; Brown County 4%
6642432%Brown County 68%

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

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

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Atchison County's ZIP codes use 2 prefixes: 660 and 664.

Three-digit prefixes of Atchison 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 Atchison County's
PrefixSectional centerHereAll codes
660 Kansas City, MO (SCF 640) 7 71
664 Kansas City, MO (SCF 640) 3 37

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