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County · code 17129

Menard CountyIllinois

Menard County is located in Illinois and was formed in 1839 with Petersburg as its seat.

  • Founded1839
  • County seatPetersburg
  • Named forPierre Menard
  • Land area314 sq mi + 1 sq mi water
  • Population12,297 2020 Census
  • Parcels mapped11,970 checked 15 October 2026
Open the free map Click any parcel in Menard County: acreage, parcel id, address and who publishes the map. No sign-in.

Updated

MasonSangamonLoganCass Petersburg Census outline · seat marked

Where it is

Menard 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 CountyJasper 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 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 CountyMenard County Menard
Counties of Illinois · Menard highlighted

History

Formed in 1839 from Sangamon County

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

Menard County was created from Sangamon County on February 15, 1839, and named after Pierre Menard. The county lost territory to the creation of Mason County in 1841, then gained land back from Sangamon County in 1843 and 1847.

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

  1. 1839
    Menard County created Menard created from Sangamon.
    from Sangamon
    · Ill. Laws 1838-1839, pp. 104-107
  2. 1841
    Lost territory Menard lost to creation of Mason.
    to Mason
    · Ill. Laws 1840-1841, pp. 69-71
  3. 1843
    Gained territory Menard gained from Sangamon.
    from Sangamon
    · Ill. Laws 1842-1843, p. 94
  4. 1847
    Gained territory Menard gained from Sangamon.
    from Sangamon
    · Ill. Laws 1846-1847, priv. and spec., p. 39

Land and parcels

What the maps cover in Menard

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

Menard by the Census

Population
12,297 2020 Census count
Housing units
5,591 2020 Census count
Land area
314 square miles
Water area
1 square miles
People per sq mi
39 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

Menard 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

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Questions

Common questions about Menard County

When was Menard County founded?
Menard County was founded in 1839, formed from Sangamon County, and named after Pierre Menard.
What is the county seat of Menard County?
The county seat of Menard County is Petersburg.
Is there an online parcel map for Menard County?
Yes. Menard County publishes a parcel map of 11,970 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Menard County's boundary or name changed?
Menard County was created in 1839 from Sangamon County. Since then the Atlas of Historical County Boundaries records 3 later changes, chiefly involving Sangamon County and Mason County.
Is my lot in a flood zone?
We do not have flood maps for Menard 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