Plain

County ZIP codes · Kansas · FIPS 20111

Lyon County, KS ZIP Codes

Lyon County, Kansas has 12 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 8 of the residential ones lie mainly in Lyon County and 4 mainly in a neighboring county; 10 cross the county line. Median household income ranges from $56,794 in 66801 (Emporia) to $74,716 in 66523 (Osage City) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Lyon County?

66413 · Burlingame: $65k66523 · Osage City: $75k66801 · Emporia: $57k66830 · Admire: $57k66833 · Allen: $58k66835 · Americus: $81k66846 · Council Grove: $62k66854 · Hartford: $96k66860 · Madison: $61k66864 · Neosho Rapids: $37k66865 · Olpe: $93k66868 · Reading: $103k66846668016686566860665236686866833668546641366835668646683066413 · Burlingame: $65k66523 · Osage City: $75k66801 · Emporia: $57k66830 · Admire: $57k66833 · Allen: $58k66835 · Americus: $81k66846 · Council Grove: $62k66854 · Hartford: $96k66860 · Madison: $61k66864 · Neosho Rapids: $37k66865 · Olpe: $93k66868 · Reading: $103k668466680166865668606652366868668336685466413668356686466413 · Burlingame: $65k66523 · Osage City: $75k66801 · Emporia: $57k66830 · Admire: $57k66833 · Allen: $58k66835 · Americus: $81k66846 · Council Grove: $62k66854 · Hartford: $96k66860 · Madison: $61k66864 · Neosho Rapids: $37k66865 · Olpe: $93k66868 · Reading: $103k6684666801668656686066523668686683366854664136683566864
The residential ZIP codes of Lyon 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 $60,531 and $65,179.

They carry 12 postal town names.

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

All 12 residential ZIP codes in Lyon County

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

Residential ZIP codes mainly in Lyon County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
66801 Emporia 27,585 92 $57k $153k 85%
66835 Americus 1,202 21 $81k $124k 99%
66865 Olpe 1,105 7 $93k $182k 67%
66854 Hartford 1,007 10 $96k $78k 71%
66833 Allen 641 5 $58k $127k 100%
66868 Reading 620 5 $103k $150k 78%
66864 Neosho Rapids 375 10 $37k $58k 69%
66830 Admire 203 7 $57k $103k 100%

Partly in Lyon County

Residential ZIP codes mainly in another county that reach at least 1% into Lyon County, by their share here
In this county
66860 Madison 1,342 7 $61k $76k 18%
66846 Council Grove 3,333 11 $62k $154k 11%
66413 Burlingame 1,721 17 $65k $124k 8%
66523 Osage City 3,941 26 $75k $167k 4%

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?

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

Share of each ZIP code's land in Lyon County and in the neighboring counties
ZIPIn LyonElsewhere
6680185%Chase County 15%
665234%Osage County 96%
6684611%Morris County 84%; Chase County 4%
664138%Osage County 88%; Wabaunsee County 4%
6686018%Greenwood County 82%
6683599%Morris County 1%
6686567%Chase County 33%
6685471%Coffey County 29%
6686878%Osage County 20%; Coffey County 2%
6686469%Coffey County 31%

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

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

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Lyon County's ZIP codes use 3 prefixes: 664, 665 and 668.

Three-digit prefixes of Lyon 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 Lyon County's
PrefixSectional centerHereAll codes
664 Kansas City, MO (SCF 640) 1 37
665 Kansas City, MO (SCF 640) 1 44
668 Kansas City, MO (SCF 640) 10 36

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