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County ZIP codes · Kansas · FIPS 20139

Osage County, KS ZIP Codes

Osage County, Kansas has 15 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 9 of the residential ones lie mainly in Osage County and 6 mainly in a neighboring county; 10 cross the county line. Median household income ranges from $65,179 in 66413 (Burlingame) to $88,427 in 66402 (Auburn) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Osage County?

66402 · Auburn: $88k66409 · Berryton: $105k66413 · Burlingame: $65k66414 · Carbondale: $74k66451 · Lyndon: $77k66510 · Melvern: $57k66523 · Osage City: $75k66524 · Overbrook: $84k66528 · Quenemo: $74k66537 · Scranton: $70k66543 · Vassar: $75k66546 · Wakarusa: $87k66856 · Lebo: $76k66868 · Reading: $103k66871 · Waverly: $71k66856665236652466868664516641366871665286640966414665376651066546664026654366402 · Auburn: $88k66409 · Berryton: $105k66413 · Burlingame: $65k66414 · Carbondale: $74k66451 · Lyndon: $77k66510 · Melvern: $57k66523 · Osage City: $75k66524 · Overbrook: $84k66528 · Quenemo: $74k66537 · Scranton: $70k66543 · Vassar: $75k66546 · Wakarusa: $87k66856 · Lebo: $76k66868 · Reading: $103k66871 · Waverly: $71k66856665236652466868664516641366871665286640966414665376651066546664026654366402 · Auburn: $88k66409 · Berryton: $105k66413 · Burlingame: $65k66414 · Carbondale: $74k66451 · Lyndon: $77k66510 · Melvern: $57k66523 · Osage City: $75k66524 · Overbrook: $84k66528 · Quenemo: $74k66537 · Scranton: $70k66543 · Vassar: $75k66546 · Wakarusa: $87k66856 · Lebo: $76k66868 · Reading: $103k66871 · Waverly: $71k66856665236652466868664516641366871665286640966414665376651066546
The residential ZIP codes of Osage 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 $71,094 and $76,908.

They carry 15 postal town names.

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

All 15 residential ZIP codes in Osage County

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

Residential ZIP codes mainly in Osage County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
66523 Osage City 3,941 26 $75k $167k 96%
66524 Overbrook 2,473 19 $84k $173k 51%
66414 Carbondale 2,360 38 $74k $162k 100%
66413 Burlingame 1,721 17 $65k $124k 88%
66451 Lyndon 1,671 21 $77k $159k 100%
66537 Scranton 1,475 28 $70k $100k 100%
66543 Vassar 980 111 $75k $172k 100%
66528 Quenemo 761 11 $74k – 82%
66510 Melvern 684 11 $57k $178k 100%

Partly in Osage County

Residential ZIP codes mainly in another county that reach at least 1% into Osage County, by their share here
In this county
66856 Lebo 1,583 11 $76k $170k 34%
66868 Reading 620 5 $103k $150k 20%
66546 Wakarusa 1,143 30 $87k $232k 9%
66871 Waverly 1,347 10 $71k $145k 5%
66402 Auburn 3,100 69 $88k $261k 3%
66409 Berryton 3,133 45 $105k $318k 2%

Download the 15 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 Osage County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in Osage County and in the neighboring counties
ZIPIn OsageElsewhere
6652396%Lyon County 4%
664092%Shawnee County 74%; Douglas County 24%
664023%Shawnee County 97%
6652451%Douglas County 44%; Shawnee County 3%; Franklin County 2%
6641388%Lyon County 8%; Wabaunsee County 4%
6685634%Coffey County 66%
668715%Coffey County 95%
665469%Shawnee County 91%
6652882%Franklin County 18%
6686820%Lyon County 78%; Coffey County 2%

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

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

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

Three-digit prefixes of Osage 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 Osage County's
PrefixSectional centerHereAll codes
664 Kansas City, MO (SCF 640) 5 37
665 Kansas City, MO (SCF 640) 7 44
668 Kansas City, MO (SCF 640) 3 36

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