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County · code 19109

Kossuth CountyIowa

Kossuth County is a county in Iowa, with its seat in Algona, formed in 1851.

  • Founded1851
  • County seatAlgona
  • Named forLajos Kossuth
  • Land area973 sq mi + 1.6 sq mi water
  • Population14,828 2020 Census
  • Parcels mapped26,141 checked 16 October 2026
Open the free map Click any parcel in Kossuth County: acreage, parcel id, address and who publishes the map. No sign-in.

Updated

HumboldtPalo AltoHancockEmmetWright Algona Census outline · seat marked

Where it is

Kossuth 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 CountyButler 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 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 CountyKossuth County Kossuth
Counties of Iowa · Kossuth highlighted

History

Formed in 1851 from Polk County

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

Kossuth County was created from Non-County Area 9 attached to Polk County in 1851, then attached to Boone County for administrative purposes in 1853. In 1855, Kossuth gained all of Bancroft County and the northern half of Humboldt County, and was detached from Boone and attached to Webster for election and judicial purposes. Kossuth was fully organized and detached from Webster in 1856, then lost territory to the re-creation of Humboldt County in 1857 and to the creation of Crocker County in 1870, before regaining Crocker when it was ruled unconstitutional in 1871.

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

  1. 1851
    Kossuth County created Kossuth created from Non-County Area 9 attached to Polk; Kossuth not fully organized, not attached.
    from Polk
    · Iowa Acts 1850-1851, ch. 9, sec. 37/pp. 35-36
  2. 1855
    Gained territory Kossuth gained all of Bancroft (extinct) and the northern half of Humboldt; Bancroft and Humboldt eliminated. Kossuth detached from Boone, attached to Webster "for election, judicial, and revenue purposes."
    from Bancroftfrom Humboldtfrom Boonefrom Webster
    · Iowa Acts 1854-1855, ch. 141-142, secs. 1-2/pp. 210-211
  3. 1857
    Lost territory Kossuth lost to re-creation of Humboldt.
    to Humboldt
    · Iowa Acts 1856-1857, ch. 147, secs. 1, 10/pp. 199-200
  4. 1870
    Lost territory Kossuth lost to creation of Crocker (extinct).
    to Crocker
    · Iowa Acts 1870, ch. 192, secs. 1, 5/pp. 239-240
  5. 1871
    Gained territory Kossuth gained all of Crocker (extinct) when the state supreme court ruled the act creating Crocker was unconstitutional; Crocker eliminated.
    from Crocker
    · Garver, "Establishment of Counties," 431-432; Iowa Reports 33:16-20
Show all 8 changes (3 more)
  1. 1851
    Kossuth County created Kossuth created from Non-County Area 9 attached to Polk; Kossuth not fully organized, not attached.
    from Polk
    · Iowa Acts 1850-1851, ch. 9, sec. 37/pp. 35-36
  2. 1853
    Changed Kossuth attached to Boone for administrative and judicial purposes.
    Boone
    · Iowa Acts 1852-1853, ch. 12, sec. 1/p. 28
  3. 1855
    Gained territory Kossuth gained all of Bancroft (extinct) and the northern half of Humboldt; Bancroft and Humboldt eliminated. Kossuth detached from Boone, attached to Webster "for election, judicial, and revenue purposes."
    from Bancroftfrom Humboldtfrom Boonefrom Webster
    · Iowa Acts 1854-1855, ch. 141-142, secs. 1-2/pp. 210-211
  4. 1856
    Changed Kossuth fully organized, detached from Webster.
    Webster
    · Swisher, "Organization of Counties," 575
  5. 1857
    Lost territory Kossuth lost to re-creation of Humboldt.
    to Humboldt
    · Iowa Acts 1856-1857, ch. 147, secs. 1, 10/pp. 199-200
  6. 1870
    Lost territory Kossuth lost to creation of Crocker (extinct).
    to Crocker
    · Iowa Acts 1870, ch. 192, secs. 1, 5/pp. 239-240
  7. 1871
    Gained territory Kossuth gained all of Crocker (extinct) when the state supreme court ruled the act creating Crocker was unconstitutional; Crocker eliminated.
    from Crocker
    · Garver, "Establishment of Counties," 431-432; Iowa Reports 33:16-20
  8. 1913
    Changed Legislature authorized creation of Larrabee (proposed) from Kossuth, dependent on local referendum that failed; Larrabee was never created.
    Larrabee
    · Iowa Acts 1913, ch. 344, secs. 1-4, 17/pp. 353-357

Land and parcels

What the maps cover in Kossuth

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

Kossuth by the Census

Population
14,828 2020 Census count
Housing units
7,216 2020 Census count
Land area
973 square miles
Water area
1.6 square miles
People per sq mi
15 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

Kossuth 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 Kossuth County

When was Kossuth County founded?
Kossuth County was founded in 1851, formed from Polk County, and named after Lajos Kossuth.
What is the county seat of Kossuth County?
The county seat of Kossuth County is Algona.
Is there an online parcel map for Kossuth County?
Yes. Kossuth County publishes a parcel map of 26,141 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Kossuth County's boundary or name changed?
Kossuth County was created in 1851 from Polk County. Since then the Atlas of Historical County Boundaries records 6 later changes, chiefly involving Boone County, Crocker County and Humboldt County.
Is my lot in a flood zone?
We do not have flood maps for Kossuth 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