Sierra County, New Mexico
Sierra County, New Mexico, has 11,395 residents (July 2025 estimate). Its county seat is Truth or Consequences. It uses Mountain Time and covers 4,181 sq mi (10,829 km²) of land.
- Resident population, July 2025
- 11,395
- Land area
- 4,181 sq mi (10,829 km²)
- County seat or government
- Truth or Consequences
- Time zone
- Mountain TimeUTC-07:00 in January; UTC-06:00 in July
- Median household income
- $41,600 ± $5,700
- Median home value
- $152,600 ± $15,687
- Median rent, with utilities
- $729 ± $44
- Homes lived in by their owners
- 71.8% ± 4.6 points
- County type
- County
- Metro or micro area
- Outside any metro or micro areaNext to: Las Cruces, NM metro area, Silver City, NM micro area, Deming, NM micro area, Alamogordo, NM micro area, and Ruidoso, NM micro area
- Water area
- 57 sq mi (148 km²)
- State
- New Mexico
- County code (FIPS)
- 35051
- Coordinates (central point)
- 33.119468, -107.188161
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 Sierra 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
- 879016,378 people
- 879352,094 people
- 879421,005 people
- 87930718 people
- 87931703 people
- 87936214 people
- 87939206 people
- 88042205 people
- 87943191 people
- 879330 people
10 ZIP Code areas overlap Sierra 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 Sierra County, largest first
- Truth or Consequences Schools11,500 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.
- Truth or Consequences, New Mexico (city)6,019 people
- Elephant Butte, New Mexico (city)1,790 people
- Arrey, New Mexico (CDP)491 people
- Williamsburg, New Mexico (village)466 people
- Las Palomas, New Mexico (CDP)304 people
- Caballo, New Mexico (CDP)233 people
- Hillsboro, New Mexico (CDP)150 people
- Hot Springs Landing, New Mexico (CDP)110 people
- Oasis, New Mexico (CDP)75 people
- Kingston, New Mexico (CDP)0 people
- Winston, New Mexico (CDP)0 people
Bordering areas, nearest first
Distances are straight lines between map points.
- Doña Ana County, New Mexico57 mi south
- Socorro County, New Mexico62 mi north
- Luna County, New Mexico72 mi southwest
- Grant County, New Mexico74 mi west
- Catron County, New Mexico88 mi northwest
- Otero County, New Mexico90 mi east
- Lincoln County, New Mexico109 mi northeast
Before using this answer on a form
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