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County · code 17079

Jasper CountyIllinois

Jasper County is in Illinois and has its county seat in Newton. The county was created on February 15, 1831 and named after William Jasper.

  • Founded1831
  • County seatNewton
  • Named forWilliam Jasper
  • Land area495 sq mi + 3.6 sq mi water
  • Population9,287 2020 Census
  • Parcels mapped15,858 checked 16 October 2026
Open the free map Click any parcel in Jasper County: acreage, parcel id, address and who publishes the map. No sign-in.

Updated

RichlandCrawfordClayEffingham Newton Census outline · seat marked

Where it is

Jasper on the map of Illinois

Illinois has 102 counties and county equivalents, each with its own records office. Shapes with a page are links.

Adams CountyAlexander CountyBond CountyBoone CountyBrown CountyBureau CountyCalhoun CountyCarroll CountyCass CountyChampaign CountyChristian CountyClark CountyClay CountyClinton CountyColes CountyCook CountyCrawford CountyCumberland CountyDeKalb CountyDe Witt CountyDouglas CountyDuPage CountyEdgar CountyEdwards CountyEffingham CountyFayette CountyFord CountyFranklin CountyFulton CountyGallatin CountyGreene CountyGrundy CountyHamilton CountyHancock CountyHardin CountyHenderson CountyHenry CountyIroquois CountyJackson CountyJefferson CountyJersey CountyJo Daviess CountyJohnson CountyKane CountyKankakee CountyKendall CountyKnox CountyLake CountyLaSalle CountyLawrence CountyLee CountyLivingston CountyLogan CountyMcDonough CountyMcHenry CountyMcLean CountyMacon CountyMacoupin CountyMadison CountyMarion CountyMarshall CountyMason CountyMassac CountyMenard CountyMercer CountyMonroe CountyMontgomery CountyMorgan CountyMoultrie CountyOgle CountyPeoria CountyPerry CountyPiatt CountyPike CountyPope CountyPulaski CountyPutnam CountyRandolph CountyRichland CountyRock Island CountySt. Clair CountySaline CountySangamon CountySchuyler CountyScott CountyShelby CountyStark CountyStephenson CountyTazewell CountyUnion CountyVermilion CountyWabash CountyWarren CountyWashington CountyWayne CountyWhite CountyWhiteside CountyWill CountyWilliamson CountyWinnebago CountyWoodford CountyJasper County Jasper
Counties of Illinois · Jasper highlighted

History

Formed in 1831 from Clay County and Crawford County

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

Jasper County was created from Clay and Crawford counties on February 15, 1831, but was not fully organized until parts attached to those counties were detached on December 19, 1834.

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

  1. 1831
    Jasper County created Jasper created from Clay and Crawford; Jasper not fully organized, parts attached to Clay and Crawford until "organized."
    from Clayfrom Crawford
    · Ill. Laws 1830-1831, pp. 50-52
  2. 1834
    Changed Jasper fully organized, detached from Clay and Crawford.
    ClayCrawford
    · Ill. Laws 1834-1835, pp. 154-155

Land and parcels

What the maps cover in Jasper

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

Jasper by the Census

Population
9,287 2020 Census count
Housing units
4,228 2020 Census count
Land area
495 square miles
Water area
3.6 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

Jasper County's official site

We have found the county's site but not its offices yet; start there.

County government

See your own lot on these maps

Open Jasper 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 Jasper County

When was Jasper County founded?
Jasper County was founded in 1831, formed from Clay County and Crawford County, and named after William Jasper.
What is the county seat of Jasper County?
The county seat of Jasper County is Newton.
Is there an online parcel map for Jasper County?
Yes. A public source publishes a parcel map of 15,858 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Jasper County's boundary or name changed?
Jasper County was created in 1831 from Clay County and Crawford County. Since then the Atlas of Historical County Boundaries records 1 later change, chiefly involving Clay County and Crawford County.
Is my lot in a flood zone?
We do not have flood maps for Jasper 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