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County · code 16043

Fremont CountyIdaho

Fremont County is a county in eastern Idaho, with its seat in St. Anthony. It was created on March 4, 1893, from Bingham County and named after John C. Frémont.

  • Founded1893
  • County seatSt. Anthony
  • Named forJohn C. Frémont
  • Land area1,864 sq mi + 32 sq mi water
  • Population13,388 2020 Census
  • Parcels mapped22,681 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

MadisonTetonClarkJeffersonTeton, WYMadison, MTGallatin, MTBeaverhead, MT St. Anthony Census outline · seat marked

Where it is

Fremont on the map of Idaho

Idaho has 44 counties and county equivalents, each with its own records office. Shapes with a page are links.

Ada CountyAdams CountyBannock CountyBear Lake CountyBenewah CountyBingham CountyBlaine CountyBoise CountyBonner CountyBonneville CountyBoundary CountyButte CountyCamas CountyCanyon CountyCaribou CountyCassia CountyClark CountyClearwater CountyCuster CountyElmore CountyFranklin CountyGem CountyGooding CountyIdaho CountyJefferson CountyJerome CountyKootenai CountyLatah CountyLemhi CountyLewis CountyLincoln CountyMadison CountyMinidoka CountyNez Perce CountyOneida CountyOwyhee CountyPayette CountyPower CountyShoshone CountyTeton CountyTwin Falls CountyValley CountyWashington CountyFremont County Fremont
Counties of Idaho · Fremont highlighted

History

Formed in 1893 from Bingham County

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

Fremont County was created from Bingham County in 1893. The county gained territory from Lemhi County in 1896 and again from Bingham County in 1904. In 1913, Fremont lost territory with the creation of Jefferson and Madison counties, and in 1919 lost more territory with the creation of Clark County.

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

  1. 1893
    Fremont County created Fremont created from Bingham.
    from Bingham
    · Id. Laws 1893, 2nd sess., pp. 94-97
  2. 1896
    Gained territory Fremont gained from Lemhi. Act approved 11 March 1895, became effective through a vote in the general election of 3 November 1896.
    from Lemhi
    · Id. Laws 1895, 3rd sess., pp. 145-148; Id. Code Ann. (1996), vol. 6, ch. 1, sec. 31-124 "Fremont Co."/p. 35
  3. 1899
    Changed The State of Idaho ceded to the United States jurisdiction over "all such lands within the State as may be included in the territory of the Yellowstone National Park....," did not change the boundaries of Fremont, the only Idaho county which includes a portion of Yellowstone National Park. · Id. Laws 1899, 5th sess., p. 22
  4. 1899
    Changed Fremont's gain from Lemhi on 3 November 1896 was reenacted (no change).
    Lemhi
    · Id. Laws 1899, 5th sess., pp. 273-275; Id. Code Ann. (1996), vol. 6, ch. 1, sec. 31-124 "Fremont Co."/p. 35
  5. 1904
    Gained territory Fremont gained from Bingham. Act approved 6 Mar 1903, became effective through a vote in the general election of 8 November 1904.
    from Bingham
    · Id. Laws 1903, 7th sess., pp. 222-223; Id. Code Ann. (1996), vol. 6, ch. 1, sec. 31-124 "Fremont Co."/p. 35
  6. 1913
    Lost territory Fremont lost to creation of Jefferson and Madison. Acts approved 18 February 1913, became effective through a vote in the general election of 4 November 1913.
    to Jeffersonto Madison
    · Id. Laws 1913, 12th sess., ch. 25/pp. 94-107; ch. 26/pp. 107-121; Id. Code Ann. (1996), vol. 6, ch. 1, sec. 31-128 "Jefferson Co.", sec. 31-135 "Madison Co."/pp. 38, 46
  7. 1919
    Lost territory Fremont lost to creation of Clark.
    to Clark
    · Id. Laws 1919, 15th sess., ch. 3/pp. 4-6

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
13,388 2020 Census count
Housing units
8,452 2020 Census count
Land area
1,864 square miles
Water area
32 square miles
People per sq mi
7 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

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Questions

Common questions about Fremont County

When was Fremont County founded?
Fremont County was founded in 1893, formed from Bingham County, and named after John C. Frémont.
What is the county seat of Fremont County?
The county seat of Fremont County is St. Anthony.
Is there an online parcel map for Fremont County?
Yes. Idaho Department of Water Resources publishes a parcel map of 22,681 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 1893 from Bingham County. Since then the Atlas of Historical County Boundaries records 5 later changes, chiefly involving Bingham County, Clark County and Jefferson 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