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County ZIP codes · Kansas · FIPS 20191

Sumner County, KS ZIP Codes

Sumner County, Kansas has 18 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 13 of the residential ones lie mainly in Sumner County and 5 mainly in a neighboring county; 12 cross the county line. Median household income ranges from $52,275 in 67152 (Wellington) to $106,036 in 67026 (Clearwater) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Sumner County?

67004 · Argonia: $78k67013 · Belle Plaine: $70k67018 · Bluff City: –67022 · Caldwell: $60k67026 · Clearwater: $106k67031 · Conway Springs: $88k67049 · Freeport: –67051 · Geuda Springs: $78k67103 · Mayfield: $54k67105 · Milan: $71k67106 · Milton: $100k67110 · Mulvane: $85k67118 · Norwich: $58k67119 · Oxford: $62k67120 · Peck: $96k67140 · South Haven: $47k67146 · Udall: $80k67152 · Wellington: $52k67152670046702267140670316702667013670516711867146670186710567119671036710667110671206704967004 · Argonia: $78k67013 · Belle Plaine: $70k67018 · Bluff City: –67022 · Caldwell: $60k67026 · Clearwater: $106k67031 · Conway Springs: $88k67049 · Freeport: –67051 · Geuda Springs: $78k67103 · Mayfield: $54k67105 · Milan: $71k67106 · Milton: $100k67110 · Mulvane: $85k67118 · Norwich: $58k67119 · Oxford: $62k67120 · Peck: $96k67140 · South Haven: $47k67146 · Udall: $80k67152 · Wellington: $52k67152670046702267140670316702667013670516711867146670186710567119671036710667110671206704967004 · Argonia: $78k67013 · Belle Plaine: $70k67018 · Bluff City: –67022 · Caldwell: $60k67026 · Clearwater: $106k67031 · Conway Springs: $88k67049 · Freeport: –67051 · Geuda Springs: $78k67103 · Mayfield: $54k67105 · Milan: $71k67106 · Milton: $100k67110 · Mulvane: $85k67118 · Norwich: $58k67119 · Oxford: $62k67120 · Peck: $96k67140 · South Haven: $47k67146 · Udall: $80k67152 · Wellington: $52k6715267004670226714067031670266701367051671186714667018671056711967103671106712067049
The residential ZIP codes of Sumner 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 $60,000 and $79,688.

They carry 18 postal town names.

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

All 18 residential ZIP codes in Sumner County

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

Residential ZIP codes mainly in Sumner County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
67152 Wellington 9,212 39 $52k $119k 100%
67110 Mulvane 8,722 161 $85k $188k 53%
67013 Belle Plaine 2,678 35 $70k $156k 100%
67031 Conway Springs 2,497 21 $88k $192k 94%
67022 Caldwell 1,436 8 $60k $90k 100%
67119 Oxford 1,287 17 $62k $122k 73%
67140 South Haven 971 7 $47k $94k 100%
67004 Argonia 801 8 $78k $123k 72%
67120 Peck 575 15 $96k $239k 61%
67106 Milton 560 11 $100k $518k 56%
67051 Geuda Springs 404 5 $78k $89k 89%
67103 Mayfield 180 3 $54k $98k 100%
67105 Milan 158 3 $71k $74k 100%

Partly in Sumner County

Residential ZIP codes mainly in another county that reach at least 1% into Sumner County, by their share here
In this county
67026 Clearwater 5,692 59 $106k $240k 28%
67146 Udall 1,867 24 $80k $164k 14%
67049 Freeport 12 0 – – 11%
67018 Bluff City 65 1 – $27k 8%
67118 Norwich 769 9 $58k $115k 2%

Download the 18 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?

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

Share of each ZIP code's land in Sumner County and in the neighboring counties
ZIPIn SumnerElsewhere
6711053%Sedgwick County 44%; Cowley County 3%
6702628%Sedgwick County 72%
6703194%Sedgwick County 6%
6714614%Cowley County 86%
6711973%Cowley County 27%
6700472%Harper County 28%
671182%Kingman County 90%; Sedgwick County 6%; Harper County 2%
6712061%Sedgwick County 39%
6710656%Sedgwick County 41%; Kingman County 3%
6705189%Cowley County 11%
670188%Harper County 92%
6704911%Harper County 89%

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

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

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Sumner County's ZIP codes use 2 prefixes: 670 and 671.

Three-digit prefixes of Sumner 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 Sumner County's
PrefixSectional centerHereAll codes
670 Wichita, KS (SCF 670) 8 58
671 Wichita, KS (SCF 670) 10 42

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