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County · code 19071

Fremont CountyIowa

Fremont County is a county in Iowa, with its seat in Sidney. It was created in 1847 and named after John C. Frémont.

  • Founded1847
  • County seatSidney
  • Named forJohn C. Frémont
  • Land area511 sq mi + 5.5 sq mi water
  • Population6,605 2020 Census
  • Parcels mapped14,607 checked 16 October 2026
Open the free map Click any parcel in Fremont County: acreage, parcel id, address and who publishes the map. No sign-in.

Updated

MillsAtchison, MOPageOtoe, NECass, NE Sidney Census outline · seat marked

Where it is

Fremont 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 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 CountyFremont County Fremont
Counties of Iowa · Fremont highlighted

History

Formed in 1847 from Appanoose County

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

Fremont County was created from Appanoose County on February 24, 1847, though it was not fully organized at that time. The county was fully organized on September 10, 1849.

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

  1. 1847
    Fremont County created Fremont created from Non-County Area 5 attached to Appanoose; Fremont not fully organized, not attached.
    from Appanoose
    · Iowa Acts 1846-1847, ch. 83, secs. 1-4/p. 100
  2. 1847
    Changed Missouri implicitly overlapped Fremont when it claimed, before the U.S. Supreme Court, a boundary with Iowa 10 miles north of the present boundary.
    U.s.
    · Landers, 647; Thomas, 268-269
  3. 1849
    Changed Missouri's implicit overlap of Fremont ended when U.S. Supreme Court set the Iowa-Missouri boundary at its present location (no change).
    U.s.
    · Landers, 647-648; Thomas, 269-270
  4. 1849
    Changed Fremont fully organized. · Swisher, "Organization of Counties," 575

Land and parcels

What the maps cover in Fremont

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

Fremont by the Census

Population
6,605 2020 Census count
Housing units
3,110 2020 Census count
Land area
511 square miles
Water area
5.5 square miles
People per sq mi
13 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

Fremont 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 Fremont 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 Fremont County

When was Fremont County founded?
Fremont County was founded in 1847, formed from Appanoose County, and named after John C. Frémont.
What is the county seat of Fremont County?
The county seat of Fremont County is Sidney.
Is there an online parcel map for Fremont County?
Yes. A public source publishes a parcel map of 14,607 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Fremont County's boundary or name changed?
Fremont County was created in 1847 from Appanoose County. Since then the Atlas of Historical County Boundaries records 2 later changes, chiefly involving U.s. County.
Is my lot in a flood zone?
We do not have flood maps for Fremont 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