When was Beaver County founded?

Beaver County was founded in 1856, formed from Iron County, and named after Canadian beaver.

What is the county seat of Beaver County?

The county seat of Beaver County is Beaver.

Is there an online parcel map for Beaver County?

Yes. Utah Geospatial Resource Center (UGRC), State of Utah publishes a parcel map of 9,103 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.

Has Beaver County's boundary or name changed?

Beaver County was created in 1856 from Iron County. Since then the Atlas of Historical County Boundaries records 8 later changes, chiefly involving St. Mary's County, Humboldt County and Iron County.

Who issues building permits in Beaver County?

The county's page on building permits: when a building permit is required. Inside a city or town, ask that city first.

Is my lot in a flood zone?

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

County · code 49001

Beaver CountyUtah

Beaver County is in Utah and was created on January 5, 1856, with its seat in Beaver.

Founded1856
County seatBeaver
Named forCanadian beaver
Land area2,583 sq mi + 2.1 sq mi water
Population7,072 2020 Census
Parcels mapped9,103 checked 14 October 2026

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

Updated 20 October 2026

Census outline · seat marked

History

Formed in 1856 from Iron County

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

Beaver County was created by the Utah Territory from Iron County and originally included parts of present Utah, Colorado, and Nevada. The county was named after the Canadian beaver. Beaver County lost territory in 1861 and 1862 as new territories and counties were formed and boundaries were adjusted.

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

1856
Beaver County created Beaver created by Utah Territory from Iron; Beaver included parts of present Utah, Colorado, and Nevada.
from Iron
5 January 1856 · Utah Terr. Laws 1855, 5th sess., sec. 9/p. 7
1861
Lost territory Beaver lost to Humboldt (Utah Territory, extinct) and St. Mary's (Utah Territory, extinct).
to Humboldtto St. Mary's
18 January 1861 · Utah Terr. Laws 1861, 10th sess., p. 19
1861
Beaver County created The United States created Colorado Territory from Nebraska, New Mexico, and Utah Territories, and from the former Kansas Territory. Beaver lost to Colorado Territory and was eliminated from present Colorado. 28 February 1861 · U.S. Stat., vol. 12, ch. 59[1861]/pp. 172-177; Van Zandt, 141
1862
Gained territory Beaver gained from Millard, Sanpete, and St. Mary's (Utah Territory, extinct).
from Millard from Sanpetefrom St. Mary's
17 January 1862 · Utah Terr. Laws 1861, 11th sess., sec. 3/p. 47
1896
Became part of Utah Beaver became a county in the state of Utah. 4 January 1896 · U.S. Stat., vol. 28, ch. 138 [1894]/pp. 107-112; U.S. Stat., vol. 29, procl. no. 9, [1896]/pp. 876-877; Van Zandt, 159

Show all 10 changes (5 more)

1856
Beaver County created Beaver created by Utah Territory from Iron; Beaver included parts of present Utah, Colorado, and Nevada.
from Iron
5 January 1856 · Utah Terr. Laws 1855, 5th sess., sec. 9/p. 7
1861
Lost territory Beaver lost to Humboldt (Utah Territory, extinct) and St. Mary's (Utah Territory, extinct).
to Humboldtto St. Mary's
18 January 1861 · Utah Terr. Laws 1861, 10th sess., p. 19
1861
Beaver County created The United States created Colorado Territory from Nebraska, New Mexico, and Utah Territories, and from the former Kansas Territory. Beaver lost to Colorado Territory and was eliminated from present Colorado. 28 February 1861 · U.S. Stat., vol. 12, ch. 59[1861]/pp. 172-177; Van Zandt, 141
1862
Gained territory Beaver gained from Millard, Sanpete, and St. Mary's (Utah Territory, extinct).
from Millard from Sanpetefrom St. Mary's
17 January 1862 · Utah Terr. Laws 1861, 11th sess., sec. 3/p. 47
1862
Lost territory Beaver lost to Nevada Territory in present Nevada when Nevada Territory gained from Utah Territory. 14 July 1862 · U.S. Stat., vol. 12, ch. 173 [1862], p. 575; Van Zandt, 158-160
1865
Lost territory Beaver lost to creation of Piute.
to Piute
16 January 1865 · Utah Terr. Laws 1864, 14th sess., p. 16
1866
Boundary clarified Beaver boundaries were redefined (no change).
no change
10 January 1866 · Utah Terr. Laws 1865, 15th sess., ch. 146, sec. 4/p. 207
1866
Lost territory Beaver lost to the state of Nevada when Nevada gained from Utah Territory; Beaver eliminated from Nevada. 5 May 1866 · U.S. Stat., vol. 14, ch. 73[1866]/p. 43; Van Zandt, 158-159
1883
Changed Beaver boundary with Iron was adjusted to run on public land survey lines (no change). Act passed 9 March 1882; took effect 1 January 1883.
Iron
1 January 1883 · Utah Terr. Laws 1882, 25th sess., ch. 52, pp. 98-101
1896
Became part of Utah Beaver became a county in the state of Utah. 4 January 1896 · U.S. Stat., vol. 28, ch. 138 [1894]/pp. 107-112; U.S. Stat., vol. 29, procl. no. 9, [1896]/pp. 876-877; Van Zandt, 159

Land and parcels

What the maps cover in Beaver

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

Parcels Good enough

Lot lines and tax-map numbers for 9,103 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 Beaver 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

Beaver by the Census

Population

7,072 2020 Census count

Housing units

2,863 2020 Census count

Land area

2,583 square miles

Water area

2.1 square miles

People per sq mi

3 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 records 435-438-6400from beaver.utah.gov · checked 13 October 2026

Permits

when a building permit is requiredfrom beaver.utah.gov

Zoning and code

Planning and zoning 435-438-6484from beaver.utah.gov · checked 13 October 2026
Code of Ordinancesfrom beaver.utah.gov
Animal Control Ordinance (PDF)from beaver.utah.gov
Planning & Zoning Ordinancesfrom beaver.utah.gov
Beaver County Zoning Mapfrom beaver.utah.gov

GIS and maps

County GIS and maps 435-438-6480from beaver.utah.gov · checked 13 October 2026

County government

County government
The official website of Beaver County.
beaver.utah.gov

See your own lot on these maps

Open Beaver 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 Beaver County

When was Beaver County founded?: Beaver County was founded in 1856, formed from Iron County, and named after Canadian beaver.
What is the county seat of Beaver County?: The county seat of Beaver County is Beaver.
Is there an online parcel map for Beaver County?: Yes. Utah Geospatial Resource Center (UGRC), State of Utah publishes a parcel map of 9,103 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Beaver County's boundary or name changed?: Beaver County was created in 1856 from Iron County. Since then the Atlas of Historical County Boundaries records 8 later changes, chiefly involving St. Mary's County, Humboldt County and Iron County.
Who issues building permits in Beaver County?: The county's page on building permits: when a building permit is required. Inside a city or town, ask that city first.
Is my lot in a flood zone?: We do not have flood maps for Beaver 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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