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County ZIP codes · Kansas · FIPS 20001

Allen County, KS ZIP Codes

Allen County, Kansas has 12 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 7 of the residential ones lie mainly in Allen County and 5 mainly in a neighboring county; 8 cross the county line. Median household income ranges from $56,911 in 66720 (Chanute) to $60,093 in 66749 (Iola) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Allen County?

66015 · Colony: $69k66039 · Kincaid: $60k66716 · Bronson: $78k66720 · Chanute: $57k66732 · Elsmore: $88k66742 · Gas: –66748 · Humboldt: $60k66749 · Iola: $60k66751 · La Harpe: $48k66755 · Moran: $74k66758 · Neosho Falls: $51k66772 · Savonburg: $61k667206675566015667486674966039667166675866772667516673266015 · Colony: $69k66039 · Kincaid: $60k66716 · Bronson: $78k66720 · Chanute: $57k66732 · Elsmore: $88k66742 · Gas: –66748 · Humboldt: $60k66749 · Iola: $60k66751 · La Harpe: $48k66755 · Moran: $74k66758 · Neosho Falls: $51k66772 · Savonburg: $61k667206675566015667486674966039667166675866772667516673266015 · Colony: $69k66039 · Kincaid: $60k66716 · Bronson: $78k66720 · Chanute: $57k66732 · Elsmore: $88k66742 · Gas: –66748 · Humboldt: $60k66749 · Iola: $60k66751 · La Harpe: $48k66755 · Moran: $74k66758 · Neosho Falls: $51k66772 · Savonburg: $61k6672066755660156674866749660396671666758667726675166732
The residential ZIP codes of Allen 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 12 postal town names.

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

All 12 residential ZIP codes in Allen County

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

Residential ZIP codes mainly in Allen County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
66749 Iola 7,448 68 $60k $107k 100%
66748 Humboldt 2,830 25 $60k $114k 81%
66755 Moran 890 7 $74k $154k 94%
66751 La Harpe 590 12 $48k $58k 100%
66732 Elsmore 294 7 $88k $86k 100%
66772 Savonburg 288 6 $61k $207k 67%
66742 Gas 30 319 – – 100%

Partly in Allen County

Residential ZIP codes mainly in another county that reach at least 1% into Allen County, by their share here
In this county
66015 Colony 712 7 $69k $155k 23%
66716 Bronson 813 10 $78k $68k 17%
66039 Kincaid 784 8 $60k $175k 7%
66758 Neosho Falls 251 5 $51k $73k 6%
66720 Chanute 10,631 54 $57k $94k 3%

Download the 12 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 Allen County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in Allen County and in the neighboring counties
ZIPIn AllenElsewhere
667203%Neosho County72%; Wilson County24%; Woodson County1%
6674881%Woodson County16%; Neosho County3%
6675594%Bourbon County6%
6671617%Bourbon County83%
660397%Anderson County93%
6601523%Anderson County77%
6677267%Bourbon County17%; Neosho County15%
667586%Woodson County71%; Coffey County17%; Anderson County6%

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

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

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Allen County's ZIP codes use 2 prefixes: 660 and 667.

Three-digit prefixes of Allen 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 Allen County's
PrefixSectional centerHereAll codes
660Kansas City, MO (SCF 640)271
667Kansas City, MO (SCF 640)1053

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