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County ZIP codes · Kansas · FIPS 20131

Nemaha County, KS ZIP Codes

Nemaha County, Kansas has 16 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 9 of the residential ones lie mainly in Nemaha County and 7 mainly in a neighboring county; 10 cross the county line. Median household income ranges from $56,250 in 68420 (Pawnee City) to $78,981 in 66538 (Seneca) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Nemaha County?

66403 · Axtell: $72k66404 · Baileyville: $90k66408 · Bern: $91k66415 · Centralia: $70k66416 · Circleville: $74k66417 · Corning: $87k66428 · Goff: $101k66432 · Havensville: $109k66521 · Onaga: $61k66522 · Oneida: $58k66534 · Sabetha: $73k66538 · Seneca: $79k66540 · Soldier: $52k66544 · Vermillion: $97k66550 · Wetmore: $60k68420 · Pawnee City: $56k66521684206653466538664286654066403664156654466432664046655066408664166641766403 · Axtell: $72k66404 · Baileyville: $90k66408 · Bern: $91k66415 · Centralia: $70k66416 · Circleville: $74k66417 · Corning: $87k66428 · Goff: $101k66432 · Havensville: $109k66521 · Onaga: $61k66522 · Oneida: $58k66534 · Sabetha: $73k66538 · Seneca: $79k66540 · Soldier: $52k66544 · Vermillion: $97k66550 · Wetmore: $60k68420 · Pawnee City: $56k6652168420665346653866428665406640366415665446655066408664166641766403 · Axtell: $72k66404 · Baileyville: $90k66408 · Bern: $91k66415 · Centralia: $70k66416 · Circleville: $74k66417 · Corning: $87k66428 · Goff: $101k66432 · Havensville: $109k66521 · Onaga: $61k66522 · Oneida: $58k66534 · Sabetha: $73k66538 · Seneca: $79k66540 · Soldier: $52k66544 · Vermillion: $97k66550 · Wetmore: $60k68420 · Pawnee City: $56k6652168420665346653866428665406640366415665446640866416
The residential ZIP codes of Nemaha 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 16 postal town names.

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

All 16 residential ZIP codes in Nemaha County

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

Residential ZIP codes mainly in Nemaha County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
66538 Seneca 3,602 26 $79k $299k 100%
66534 Sabetha 3,381 23 $73k $199k 80%
66415 Centralia 762 8 $70k $86k 100%
66550 Wetmore 552 8 $60k $130k 79%
66417 Corning 507 12 $87k – 100%
66404 Baileyville 481 8 $90k $180k 98%
66408 Bern 427 8 $91k $153k 100%
66428 Goff 246 3 $101k $107k 100%
66522 Oneida 130 1,008 $58k $50k 100%

Partly in Nemaha County

Residential ZIP codes mainly in another county that reach at least 1% into Nemaha County, by their share here
In this county
66403 Axtell 801 9 $72k $252k 25%
66544 Vermillion 287 3 $97k $76k 16%
66540 Soldier 582 7 $52k $179k 13%
66432 Havensville 540 8 $109k $263k 11%
66416 Circleville 522 15 $74k $157k 9%
66521 Onaga 1,417 8 $61k $193k 8%
68420 Pawnee City 1,255 10 $56k $68k 2%

Download the 16 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 Nemaha County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in Nemaha County and in the neighboring counties
ZIPIn NemahaElsewhere
6653480%Brown County 20%
665218%Pottawatomie County 92%
684202%Pawnee County 98%
6640325%Marshall County 75%
6654013%Jackson County 87%
6655079%Jackson County 11%; Brown County 10%
6643211%Pottawatomie County 77%; Jackson County 12%
664169%Jackson County 91%
6640498%Marshall County 2%
6654416%Marshall County 84%

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

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

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Nemaha County's ZIP codes use 3 prefixes: 664, 665 and 684.

Three-digit prefixes of Nemaha 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 Nemaha County's
PrefixSectional centerHereAll codes
664 Kansas City, MO (SCF 640) 8 37
665 Kansas City, MO (SCF 640) 7 44
684 Lincoln, NE (SCF 683) 1 56

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