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County · code 20191

Sumner CountyKansas

Sumner County is a county in Kansas, with its seat in Wellington, formed in 1867.

  • Founded1867
  • County seatWellington
  • Named forCharles Sumner
  • Land area1,182 sq mi + 3.3 sq mi water
  • Population22,382 2020 Census
  • Parcels mapped18,153 checked 16 October 2026
Open the free map Click any parcel in Sumner County: acreage, parcel id, address and who publishes the map. No sign-in.

Updated

SedgwickHarperCowley Wellington Census outline · seat marked

Where it is

Sumner on the map of Kansas

Kansas has 105 counties and county equivalents, each with its own records office. Shapes with a page are links.

Allen CountyAnderson CountyAtchison CountyBarber CountyBarton CountyBourbon CountyBrown CountyButler CountyChase CountyChautauqua CountyCherokee CountyCheyenne CountyClark CountyClay CountyCloud CountyCoffey CountyComanche CountyCowley CountyCrawford CountyDecatur CountyDickinson CountyDoniphan CountyDouglas CountyEdwards CountyElk CountyEllis CountyEllsworth CountyFinney CountyFord CountyFranklin CountyGeary CountyGove CountyGraham CountyGrant CountyGray CountyGreeley CountyGreenwood CountyHamilton CountyHarper CountyHarvey CountyHaskell CountyHodgeman CountyJackson CountyJefferson CountyJewell CountyJohnson CountyKearny CountyKingman CountyKiowa CountyLabette CountyLane CountyLeavenworth CountyLincoln CountyLinn CountyLogan CountyLyon CountyMcPherson CountyMarion CountyMarshall CountyMeade CountyMiami CountyMitchell CountyMontgomery CountyMorris CountyMorton CountyNemaha CountyNeosho CountyNess CountyNorton CountyOsage CountyOsborne CountyOttawa CountyPawnee CountyPhillips CountyPottawatomie CountyPratt CountyRawlins CountyReno CountyRepublic CountyRice CountyRiley CountyRooks CountyRush CountyRussell CountySaline CountyScott CountySedgwick CountySeward CountyShawnee CountySheridan CountySherman CountySmith CountyStafford CountyStanton CountyStevens CountyThomas CountyTrego CountyWabaunsee CountyWallace CountyWashington CountyWichita CountyWilson CountyWoodson CountyWyandotte CountySumner County Sumner
Counties of Kansas · Sumner highlighted

History

Formed in 1867 from Butler County and Marion County

An old deed may name a county that no longer exists, or a boundary that has since moved.

Sumner County was created on February 26, 1867 from Butler and Marion counties but was not fully organized at that time. The county was named after Charles Sumner. Sumner was attached to Butler for judicial purposes until it was fully organized on February 7, 1871, when it was detached.

Boundary changes from the Newberry Library, Atlas of Historical County Boundaries; the 5 that matter most are shown first.

  1. 1867
    Sumner County created Sumner created from Butler and Marion; Sumner not fully organized.
    from Butlerfrom Marion
    · Kans. Laws 1867, 7th leg., ch. 33, sec. 11/p. 52
  2. 1867
    Changed Sumner attached to Butler "for judicial purposes."
    Butler
    · Kans. Laws 1867, 7th leg., ch. 52, sec. 9/p. 87
  3. 1869
    Changed Sumner remained attached to Butler "for judicial purposes."
    Butler
    · Kans. Laws 1869, 9th leg., ch. 36, sec. 8/p. 121
  4. 1871
    Changed Sumner fully organized, detached from Butler.
    Butler
    · Andreas, 1495; Caldwell Messenger, 257-258
  5. 1872
    Changed Barbour (now Barber), Clark, and Comanche attached to Sumner "for judicial purposes." Harper detached from Sedgwick, attached to Sumner "for judicial purposes."
    BarbourBarberClarkComancheHarperSedgwick
    · Kans. Laws 1872, 12th leg., ch. 112, sec. 5/p. 251
Show all 8 changes (3 more)
  1. 1867
    Sumner County created Sumner created from Butler and Marion; Sumner not fully organized.
    from Butlerfrom Marion
    · Kans. Laws 1867, 7th leg., ch. 33, sec. 11/p. 52
  2. 1867
    Changed Sumner attached to Butler "for judicial purposes."
    Butler
    · Kans. Laws 1867, 7th leg., ch. 52, sec. 9/p. 87
  3. 1869
    Changed Sumner remained attached to Butler "for judicial purposes."
    Butler
    · Kans. Laws 1869, 9th leg., ch. 36, sec. 8/p. 121
  4. 1871
    Changed Sumner fully organized, detached from Butler.
    Butler
    · Andreas, 1495; Caldwell Messenger, 257-258
  5. 1872
    Changed Barbour (now Barber), Clark, and Comanche attached to Sumner "for judicial purposes." Harper detached from Sedgwick, attached to Sumner "for judicial purposes."
    BarbourBarberClarkComancheHarperSedgwick
    · Kans. Laws 1872, 12th leg., ch. 112, sec. 5/p. 251
  6. 1873
    Changed Barbour (now Barber), Comanche, and Harper detached from Sumner, attached to Reno "for judicial purposes." Clark detached from Sumner, attached to Ford "for judicial purposes."
    BarbourBarberComancheHarperRenoClarkFord
    · Kans. Laws 1873, 13th leg., ch. 79, secs. 4, 6/p. 166
  7. 1876
    Changed Harper detached from Reno, attached to Sumner "for judicial purposes."
    HarperReno
    · Kans. Laws 1876, 16th leg., ch. 69, sec. 2/pp. 168-169
  8. 1878
    Changed Harper fully organized, detached from Sumner.
    Harper
    · Andreas, 363-364; Sanders, 42-43

Land and parcels

What the maps cover in Sumner

Who publishes each layer, how good it is, and when we last checked.

Official
from the office that keeps the record
Good enough
a reliable statewide or national copy
Fallback
a guide only; check the official record
Missing
nothing public found yet

People and land

Sumner by the Census

Population
22,382 2020 Census count
Housing units
10,324 2020 Census count
Land area
1,182 square miles
Water area
3.3 square miles
People per sq mi
19 population ÷ land area

Source: US Census Bureau, 2020 Census; US Census Bureau, 2020 Gazetteer Files. Not endorsed or certified by the Census Bureau.

Rules and offices

Who to ask before you build, dig or sell

Official county pages only. We link to them; we do not copy them, because they change.

Inside a city or town, permits usually come from that city rather than the county.

Permits

Zoning and code

GIS and maps

County government

See your own lot on these maps

Open Sumner County on Parcel Chart's free map and click your parcel. Save it with a free account; the full record of your place (site map, projects, documents) is Pro, in early access.

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Questions

Common questions about Sumner County

When was Sumner County founded?
Sumner County was founded in 1867, formed from Butler County and Marion County, and named after Charles Sumner.
What is the county seat of Sumner County?
The county seat of Sumner County is Wellington.
Is there an online parcel map for Sumner County?
Yes. A public source publishes a parcel map of 18,153 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Sumner County's boundary or name changed?
Sumner County was created in 1867 from Butler County and Marion County. Since then the Atlas of Historical County Boundaries records 7 later changes, chiefly involving Harper County, Butler County and Barber County.
Who issues building permits in Sumner County?
The county's page on building permits: Water Well Permit (Private). Inside a city or town, ask that city first.
Who issues septic and well permits in Sumner County?
The county's page on septic systems and wells: Health department: septic and well.
Is my lot in a flood zone?
We do not have flood maps for Sumner County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.

Nearby

Counties next door