Weston County, Wyoming
Weston County, Wyoming, has 6,840 residents (July 2025 estimate). Its county seat is Newcastle. It uses Mountain Time and covers 2,398 sq mi (6,211 km²) of land.
- Resident population, July 2025
- 6,840
- Land area
- 2,398 sq mi (6,211 km²)
- County seat or government
- Newcastle
- Time zone
- Mountain TimeUTC-07:00 in January; UTC-06:00 in July
- Median household income
- $89,509 ± $13,119
- Median home value
- $221,700 ± $18,820
- Median rent, with utilities
- $698 ± $255
- Homes lived in by their owners
- 86.8% ± 4.1 points
- County type
- County
- Metro or micro area
- Outside any metro or micro areaNext to: Gillette, WY micro area, Spearfish, SD micro area, and Rapid City, SD metro area
- Water area
- 2.02 sq mi (5.23 km²)
- State
- Wyoming
- County code (FIPS)
- 56045
- Coordinates (central point)
- 43.846213, -104.570020
These coordinates mark a central point for the area, not a street address. Income, home value, rent and homes lived in by their owners: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 13, 2026.
Time zones in Weston County
| Time zone | Local time and UTC offset | Next clock change |
|---|---|---|
| Mountain TimeAmerica/Denver | UTC-07:00 in January; UTC-06:00 in July. Enable JavaScript for the live clock. | Enable JavaScript for upcoming changes. |
Near a time-zone line, check where you are with the time-zone finder. Your phone’s setting can differ.
ZIP Code areas, largest first
4 ZIP Code areas overlap Weston County. People counts are 2020–2024 estimates for each whole ZIP area. Mailing ZIPs can differ; check an address with USPS ZIP Code Lookup.
Official county information
We don’t have a website for this county yet. The US government’s local-office directory ↗ lists its offices. A geographic lookup cannot determine eligibility, tax liability or a court obligation.
School districts in Weston County, largest first
- Weston County School District 15,572 people
- Weston County School District 71,254 people
Districts with land in the county; a district can cross county lines. People counts are American Community Survey 2020–2024 5-year estimates. A district boundary doesn’t decide which school a student attends.
Cities, towns and communities, largest first
These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.
- Newcastle, Wyoming (city)3,348 people
- Upton, Wyoming (town)892 people
- Hill View Heights, Wyoming (CDP)240 people
- Osage, Wyoming (CDP)114 people
Bordering areas, nearest first
Distances are straight lines between map points.
- Crook County, Wyoming51 mi north
- Lawrence County, South Dakota51 mi northeast
- Campbell County, Wyoming53 mi northwest
- Niobrara County, Wyoming54 mi south
- Custer County, South Dakota56 mi east
- Converse County, Wyoming76 mi southwest
- Pennington County, South Dakota88 mi east
Before using this answer on a form
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