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County · code 18085

Kosciusko CountyIndiana

Kosciusko County is in Indiana and has its seat in Warsaw. The county was formed on February 7, 1835, from parts of Cass, Elkhart, and Grant counties.

  • Founded1835
  • County seatWarsaw
  • Named forTadeusz Kościuszko
  • Land area531 sq mi + 23 sq mi water
  • Population80,240 2020 Census
  • Parcels mapped52,136 checked 15 October 2026
Open the free map Click any parcel in Kosciusko County: acreage, parcel id, address and who publishes the map. No sign-in.

Updated

ElkhartWhitleyWabashFulton Warsaw Census outline · seat marked

Where it is

Kosciusko on the map of Indiana

Indiana has 92 counties and county equivalents, each with its own records office. Shapes with a page are links.

Adams CountyAllen CountyBartholomew CountyBenton CountyBlackford CountyBoone CountyBrown CountyCarroll CountyCass CountyClark CountyClay CountyClinton CountyCrawford CountyDaviess CountyDearborn CountyDecatur CountyDeKalb CountyDelaware CountyDubois CountyElkhart CountyFayette CountyFloyd CountyFountain CountyFranklin CountyFulton CountyGibson CountyGrant CountyGreene CountyHamilton CountyHancock CountyHarrison CountyHendricks CountyHenry CountyHoward CountyHuntington CountyJackson CountyJasper CountyJay CountyJefferson CountyJennings CountyJohnson CountyKnox CountyLaGrange CountyLake CountyLaPorte CountyLawrence CountyMadison CountyMarion CountyMarshall CountyMartin CountyMiami CountyMonroe CountyMontgomery CountyMorgan CountyNewton CountyNoble CountyOhio CountyOrange CountyOwen CountyParke CountyPerry CountyPike CountyPorter CountyPosey CountyPulaski CountyPutnam CountyRandolph CountyRipley CountyRush CountySt. Joseph CountyScott CountyShelby CountySpencer CountyStarke CountySteuben CountySullivan CountySwitzerland CountyTippecanoe CountyTipton CountyUnion CountyVanderburgh CountyVermillion CountyVigo CountyWabash CountyWarren CountyWarrick CountyWashington CountyWayne CountyWells CountyWhite CountyWhitley CountyKosciusko County Kosciusko
Counties of Indiana · Kosciusko highlighted

History

Formed in 1835 from Cass County, Elkhart County and Grant County

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

Kosciusko County was formed in 1835 from Cass County, Elkhart County and Grant County, and named after Tadeusz Kościuszko. Warsaw is the county seat.

Deeds and plats from before 1835 for land now in Kosciusko County may have been recorded in Cass County, Elkhart County and Grant County.

Boundary changes from the Newberry Library, Atlas of Historical County Boundaries.

  1. 1835
    Kosciusko County created Kosciusko created from Non-County Area 12 attached to Cass, Non-County Area 13 attached to Elkhart, and Non-County Area 15 attached to Grant; Kosciusko not fully organized, parts attached to Cass, Elkhart, and Grant for administrative and judicial purposes.
    from Cassfrom Elkhartfrom Grant
    · Ind. Acts 1834, 19th sess., gen., ch. 25, sec. 7/p. 45
  2. 1836
    Changed Kosciusko fully organized, detached from Cass, Elkhart, and Grant.
    CassElkhartGrant
    · Ind. Acts 1835, 20th sess., gen., ch. 21, sec. 1/p. 55
  3. 1840
    Lost territory Kosciusko lost to Fulton.
    to Fulton
    · Ind. Acts 1839, 24th sess., loc., ch. 208/p. 229; Pence and Armstrong, 368
  4. 1842
    Gained territory Kosciusko gained from Fulton.
    from Fulton
    · Ind. Rev. Stat. 1843, ch. 2, secs. 2, 26, 28-31, 36-37, 42-44, 61, 67, 77, 80-82, 85-86/pp. 68, 74-81, 84, 86, 88-89
  5. 1846
    Lost territory Kosciusko lost to Fulton.
    to Fulton
    · Ind. Acts 1845, 30th sess., gen., ch. 78/p. 87

Land and parcels

What the maps cover in Kosciusko

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

Kosciusko by the Census

Population
80,240 2020 Census count
Housing units
38,133 2020 Census count
Land area
531 square miles
Water area
23 square miles
People per sq mi
151 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

County government

See your own lot on these maps

Open Kosciusko 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 Kosciusko County

When was Kosciusko County founded?
Kosciusko County was founded in 1835, formed from Cass County, Elkhart County and Grant County, and named after Tadeusz Kościuszko.
What is the county seat of Kosciusko County?
The county seat of Kosciusko County is Warsaw.
Is there an online parcel map for Kosciusko County?
Yes. Indiana Geographic Information Office (IndianaMap) publishes a parcel map of 52,136 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Kosciusko County's boundary or name changed?
Kosciusko County was created in 1835 from Cass County, Elkhart County and Grant County. Since then the Atlas of Historical County Boundaries records 4 later changes, chiefly involving Fulton County, Cass County and Elkhart County.
Who issues building permits in Kosciusko County?
The county's page on building permits: Improvement Location Permits. Inside a city or town, ask that city first.
Is my lot in a flood zone?
We do not have flood maps for Kosciusko 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