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County · code 19023

Butler CountyIowa

Butler County is in Iowa and has its county seat in Allison. The county was created in 1851.

  • Founded1851
  • County seatAllison
  • Named forWilliam Orlando Butler
  • Land area580 sq mi + 1.6 sq mi water
  • Population14,334 2020 Census
  • Parcels mapped14,037 checked 14 October 2026
Open the free map Click any parcel in Butler County: acreage, parcel id, address and who publishes the map. No sign-in.

Updated

FloydGrundyFranklinBremer Allison Census outline · seat marked

Where it is

Butler on the map of Iowa

Iowa has 99 counties and county equivalents, each with its own records office. Shapes with a page are links.

Adair CountyAdams CountyAllamakee CountyAppanoose CountyAudubon CountyBenton CountyBlack Hawk CountyBoone CountyBremer CountyBuchanan CountyBuena Vista CountyCalhoun CountyCarroll CountyCass CountyCedar CountyCerro Gordo CountyCherokee CountyChickasaw CountyClarke CountyClay CountyClayton CountyClinton CountyCrawford CountyDallas CountyDavis CountyDecatur CountyDelaware CountyDes Moines CountyDickinson CountyDubuque CountyEmmet CountyFayette CountyFloyd CountyFranklin CountyFremont CountyGreene CountyGrundy CountyGuthrie CountyHamilton CountyHancock CountyHardin CountyHarrison CountyHenry CountyHoward CountyHumboldt CountyIda CountyIowa CountyJackson CountyJasper CountyJefferson CountyJohnson CountyJones CountyKeokuk CountyKossuth CountyLee CountyLinn CountyLouisa CountyLucas CountyLyon CountyMadison CountyMahaska CountyMarion CountyMarshall CountyMills CountyMitchell CountyMonona CountyMonroe CountyMontgomery CountyMuscatine CountyO'Brien CountyOsceola CountyPage CountyPalo Alto CountyPlymouth CountyPocahontas CountyPolk CountyPottawattamie CountyPoweshiek CountyRinggold CountySac CountyScott CountyShelby CountySioux CountyStory CountyTama CountyTaylor CountyUnion CountyVan Buren CountyWapello CountyWarren CountyWashington CountyWayne CountyWebster CountyWinnebago CountyWinneshiek CountyWoodbury CountyWorth CountyWright CountyButler County Butler
Counties of Iowa · Butler highlighted

History

Formed in 1851 from Delaware County

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

Butler County was created from Delaware County on January 15, 1851, and named after William Orlando Butler. The county was initially not fully organized and attached to neighboring counties for judicial, elective, and revenue purposes: first to Buchanan County in 1851, then to Black Hawk County in 1853, until it was fully organized and detached in 1854.

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

  1. 1851
    Butler County created Butler created from Non-County Area 6 attached to Delaware; Butler not fully organized, not attached.
    from Delaware
    · Iowa Acts 1850-1851, ch. 9, sec. 9/p. 29
  2. 1851
    Changed Butler attached to Buchanan "for judicial, elective, and revenue purposes."
    Buchanan
    · Iowa Acts 1850-1851, ch. 95, secs. 1-2/p. 227
  3. 1853
    Changed Butler detached from Buchanan, attached to Black Hawk "for judicial, elective, and revenue purposes" (Butler remained indirectly attached to Buchanan, through Black Hawk, until 17 August 1853).
    BuchananBlack Hawk
    · Iowa Acts 1852-1853, ch. 50, sec. 5/pp. 85-86
  4. 1854
    Changed Butler fully organized, detached from Black Hawk.
    Black Hawk
    · Swisher, "Organization of Counties," 574

Land and parcels

What the maps cover in Butler

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

Butler by the Census

Population
14,334 2020 Census count
Housing units
6,536 2020 Census count
Land area
580 square miles
Water area
1.6 square miles
People per sq mi
25 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 Butler 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 Butler County

When was Butler County founded?
Butler County was founded in 1851, formed from Delaware County, and named after William Orlando Butler.
What is the county seat of Butler County?
The county seat of Butler County is Allison.
Is there an online parcel map for Butler County?
Yes. Butler County publishes a parcel map of 14,037 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Butler County's boundary or name changed?
Butler County was created in 1851 from Delaware County. Since then the Atlas of Historical County Boundaries records 3 later changes, chiefly involving Black Hawk County and Buchanan County.
Who issues building permits in Butler County?
The county's page on building permits: Open Building Permit Application. Inside a city or town, ask that city first.
Is my lot in a flood zone?
We do not have flood maps for Butler 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