When was Duchesne County founded?

Duchesne County was founded in 1915, formed from Wasatch County, and named after Duchesne River, Utah.

What is the county seat of Duchesne County?

The county seat of Duchesne County is Duchesne.

Is there an online parcel map for Duchesne County?

Yes. Utah Geospatial Resource Center (UGRC), State of Utah publishes a parcel map of 32,354 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.

Has Duchesne County's boundary or name changed?

Duchesne County was created in 1915 from Wasatch County. Since then the Atlas of Historical County Boundaries records 1 later change, chiefly involving Uintah County.

Who issues building permits in Duchesne County?

The county's page on building permits: Building Permit. Inside a city or town, ask that city first.

Is my lot in a flood zone?

We do not have flood maps for Duchesne County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.

County · code 49013

Duchesne CountyUtah

Duchesne County is a county in Utah with its seat in Duchesne, formed in 1915. The county was named after the Duchesne River.

Founded1915
County seatDuchesne
Named forDuchesne River, Utah
Land area3,235 sq mi + 15 sq mi water
Population19,596 2020 Census
Parcels mapped32,354 checked 14 October 2026

Open the free map Click any parcel in Duchesne County: acreage, parcel id, address and who publishes the map. No sign-in.

Updated 20 October 2026

Census outline · seat marked

History

Formed in 1915 from Wasatch County

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

Duchesne County was created from Wasatch County, with a referendum held on July 13, 1914, and the governor's proclamation taking effect on January 4, 1915. In 1917, Duchesne County gained territory from Uintah County.

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

1915
Duchesne County created Duchesne created from Wasatch. Referendum held 13 July 1914; governor's proclamation took effect 4 January 1915.
from Wasatch
4 January 1915 · Utah Laws 1913, 10th sess., ch. 28/pp. 35-38; Stout, 2: 361
1917
Gained territory Duchesne gained from Uintah.
from Uintah
5 March 1917 · Utah Laws 1917, 12th sess., ch. 34, pp. 102-104
1977
Boundary clarified Duchesne boundaries were clarified (no change).
no change
10 May 1977 · Utah Laws 1977, 42d leg., 1st sess., ch. 67, pp. 306-308

Land and parcels

What the maps cover in Duchesne

Who publishes each layer, how good it is, and when we last checked.

Parcels Good enough

Lot lines and tax-map numbers for 32,354 parcels from Utah Geospatial Resource Center (UGRC), State of Utah. Drawn for tax purposes: usually within a few feet of a survey, but not a survey.
edited 9 October 2026 · checked 14 October 2026
Address points Missing

No public address points layer found for Duchesne County yet.
Buildings Reference

Roof outlines traced from aerial imagery from FEMA Response Geospatial Office with Oak Ridge National Laboratory (ORNL). Good for seeing what is on a lot; not accurate enough to set a fence from.
checked 18 October 2026

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

Duchesne by the Census

Population

19,596 2020 Census count

Housing units

8,725 2020 Census count

Land area

3,235 square miles

Water area

15 square miles

People per sq mi

6 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.

Records

Assessor and property recordsfrom duchesne.utah.gov · checked 13 October 2026
Clerk of court: deeds and plats
Clerk/Auditor’s Office
from duchesne.utah.gov · checked 13 October 2026

Permits

Building Permitfrom duchesne.utah.gov

Zoning and code

County Ordinancesfrom duchesne.utah.gov

County government

County government
The official website of Duchesne County.
duchesne.utah.gov

See your own lot on these maps

Open Duchesne 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.

Open the free map no sign-in Pro early access

Questions

Common questions about Duchesne County

When was Duchesne County founded?: Duchesne County was founded in 1915, formed from Wasatch County, and named after Duchesne River, Utah.
What is the county seat of Duchesne County?: The county seat of Duchesne County is Duchesne.
Is there an online parcel map for Duchesne County?: Yes. Utah Geospatial Resource Center (UGRC), State of Utah publishes a parcel map of 32,354 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Duchesne County's boundary or name changed?: Duchesne County was created in 1915 from Wasatch County. Since then the Atlas of Historical County Boundaries records 1 later change, chiefly involving Uintah County.
Who issues building permits in Duchesne County?: The county's page on building permits: Building Permit. Inside a city or town, ask that city first.
Is my lot in a flood zone?: We do not have flood maps for Duchesne County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.

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