County · code 35021
Harding CountyNew Mexico
Harding County is a county in New Mexico, founded in 1921, with its seat at Mosquero.
- Founded1921
- County seatMosquero
- Named forWarren G. Harding
- Land area2,125 sq mi + 0.5 sq mi water
- Population657 2020 Census
- Parcels mapped5,492 checked 15 October 2026
Where it is
Harding on the map of New Mexico
New Mexico has 33 counties and county equivalents, each with its own records office. Shapes with a page are links.
History
Formed in 1921 from Mora County and Union County
An old deed may name a county that no longer exists, or a boundary that has since moved.
Harding County was created on June 10, 1921, from Mora County and Union County. On March 13, 1923, the county lost territory to the creation of Jefferson County, which is now part of San Miguel County.
- 1921Harding County created Harding created from Mora and Union. · N.M. Laws 1921, 5th reg. sess., ch. 48/pp. 106-107
- 1923Lost territory Harding lost to creation of Jefferson (now San Miguel).to Jeffersonto San Miguel· N.M. Laws 1923, 6th reg. sess., ch. 142/pp. 281-283
Land and parcels
What the maps cover in Harding
Who publishes each layer, how good it is, and when we last checked.
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Parcels Official
Lot lines and tax-map numbers for 5,492 parcels from Harding County, NM Assessor (owner PTrujillo03; the assessor is Phillip J. Trujillo; hardingcounty.org links 'Assessor's Information', Sidwell Portico experience 2bed2c27f66a43c9bc813fc2fab4182a, which loads Parcel_HardingNM and names the Harding County Assessor; org profile not public). Drawn for tax purposes: usually within a few feet of a survey, but not a survey.
edited 5 March 2026 · checked 15 October 2026 -
Address points Missing
No public address points layer found for Harding 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
Harding 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.
County government
- County government
The official website of Harding County.
See your own lot on these maps
Open Harding 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 Harding County
- When was Harding County founded?
- Harding County was founded in 1921, formed from Mora County and Union County, and named after Warren G. Harding.
- What is the county seat of Harding County?
- The county seat of Harding County is Mosquero.
- Is there an online parcel map for Harding County?
- Yes. Harding County, NM Assessor (owner PTrujillo03; the assessor is Phillip J. Trujillo; hardingcounty.org links 'Assessor's Information', Sidwell Portico experience 2bed2c27f66a43c9bc813fc2fab4182a, which loads Parcel_HardingNM and names the Harding County Assessor; org profile not public) publishes a parcel map of 5,492 parcels, rated official here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
- Has Harding County's boundary or name changed?
- Harding County was created in 1921 from Mora County and Union County. Since then the Atlas of Historical County Boundaries records 1 later change, chiefly involving Jefferson County and San Miguel County.
- Is my lot in a flood zone?
- We do not have flood maps for Harding County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.
Nearby