County · code 56045
Weston CountyWyoming
Weston County is a county in Wyoming, with its seat at Newcastle. It was created on March 12, 1890, from Crook County.
- Founded1890
- County seatNewcastle
- Land area2,398 sq mi + 2 sq mi water
- Population6,838 2020 Census
- Parcels mapped5,859 checked 15 October 2026
Where it is
Weston on the map of Wyoming
Wyoming has 23 counties and county equivalents, each with its own records office. Shapes with a page are links.
History
Formed in 1890 from Crook County
An old deed may name a county that no longer exists, or a boundary that has since moved.
Weston County was created by Wyoming Territory from Crook County in 1890, though it was initially attached to Crook County for administrative and judicial purposes. The county was fully organized and detached from Crook County in May 1890, and became a county in the state of Wyoming in July 1890. In 1911, Weston County lost territory to the creation of Campbell County.
- 1890Weston County created Weston created by Wyoming Territory from Crook. Weston not fully organized, attached to Crook for administrative and judicial purposes. · Wyo. Terr. Laws 1890, 11th leg., ch. 47/pp. 79-80
- 1890
- 1890Became part of Wyoming Weston became a county in the state of Wyoming. · Wyoming Constitution 1889, art. 12 in Swindler, 10:493; U.S. Stat., vol. 26, ch. 664[1890]/pp. 222-226; Van Zandt, 145
- 1911Lost territory Weston lost to creation of Campbell. Campbell not fully organized, part attached to Weston "for judicial, revenue and election purposes." The southern boundary of Weston was adjusted to run on federal land survey lines. Technically, Campbell had been created on 13 February 1911, but the several boundary laws of February 1911 were not passed in the intended sequence and mapping them in strict chronological order is not practical. By treating the law of 21 February as the basic structure that the other laws modify, the mapping reflects the intent of the legislature. · Wyo. Laws 1911, 11th leg., ch. 14/pp. 15-16 and ch. 77, secs. 4, 14/pp. 105-106, 113
- 1911
Land and parcels
What the maps cover in Weston
Who publishes each layer, how good it is, and when we last checked.
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Parcels Good enough
Lot lines and tax-map numbers for 5,859 parcels from Weston County. Drawn for tax purposes: usually within a few feet of a survey, but not a survey.
edited 13 August 2026 · checked 15 October 2026 -
Address points Missing
No public address points layer found for Weston County yet.
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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
Weston by the Census
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
Zoning and code
County government
- County government
The official website of Weston County.
See your own lot on these maps
Open Weston 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.
Questions
Common questions about Weston County
- When was Weston County founded?
- Weston County was founded in 1890, formed from Crook County.
- What is the county seat of Weston County?
- The county seat of Weston County is Newcastle.
- Is there an online parcel map for Weston County?
- Yes. Weston County publishes a parcel map of 5,859 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
- Has Weston County's boundary or name changed?
- Weston County was created in 1890 from Crook County. Since then the Atlas of Historical County Boundaries records 4 later changes, chiefly involving Campbell County and Crook County.
- Who issues building permits in Weston County?
- The county's page on building permits: Concealed Firearm Permit. Inside a city or town, ask that city first.
- Is my lot in a flood zone?
- We do not have flood maps for Weston County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.
Nearby