County Maps US

Harding County, New Mexico

The least populous of New Mexico's 33 counties.

CountyFIPS 35021Sparse data

Within New Mexico
Harding County, highlighted, with the areas around it. Boundaries generalised from the 2025 Census cartographic boundary file; neighbour fills carry no data. The dot marks Mosquero, the county seat, located via the 2025 Census Gazetteer.

Download SVGFull New Mexico map downloads

Population
617
-35 (-5.4%) since 2020
Land area
2,125
square miles. A further 0.0% of the total area is water
Population density
0.29
people per square mile, computed rather than published
County seat
Mosquero
Seat of county government.
Established
1921
104 years ago
Largest city
Roy village
Population 185.

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; Wikidata (CC0), Wikidata. Retrieved 30 August 2026.

Satellite view

Aerial imagery of Harding County with its boundary drawn on top. A map shows you the shape; this shows you what is inside it, and which side of the line a place falls on.

Aerial view of Harding County, New Mexico from the USGS National Map, with its boundary outlined
Imagery: USGS National Map, USGS Imagery Only, public domain, requested from USGS by your browser when you reach this point on the page, at 800 by 765 pixels. The boundary is the 2025 Census cartographic boundary file, reprojected to Web Mercator to match the imagery. You can also open the USGS National Map viewer.

Where Harding County ranks

Position among the 33 counties of New Mexico, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn New MexicoNationally
Population61733rd of 333,132nd of 3,144
Land area2,125 sq mi27th of 33262nd of 3,144
Population density0.29 per sq mi33rd of 333,131st of 3,144
Median household income$48,55324th of 322,855th of 3,143

Full data for Harding County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population617Vintage 2025 Population Estimates
Population in 2020652Vintage 2025 Population Estimates
2020 estimates base?654Vintage 2025 Population Estimates
Land area2,125 sq mi2025 Gazetteer Files
Water area0.45 sq mi2025 Gazetteer Files
Total area2,126 sq mi2025 Gazetteer Files
Population density?0.29 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$48,553American Community Survey 2020-2024 5-Year Estimates
Median home value$70,000American Community Survey 2020-2024 5-Year Estimates
Median age42.5American Community Survey 2020-2024 5-Year Estimates
Households286American Community Survey 2020-2024 5-Year Estimates
Housing units496American Community Survey 2020-2024 5-Year Estimates

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; US Census Bureau, American Community Survey, American Community Survey 2020-2024 5-Year Estimates, released 29 January 2026. Population density is computed here, not published: it divides the Vintage 2025 population estimate by the 2025 Gazetteer land area, which are two different Census products. Retrieved 30 August 2026.

How the population changed

The Census Bureau publishes the components behind an estimate, not just the total. For the year to July 2025:

Births minus deaths
-9
0 births, 9 deaths
Net migration
+5
More people moved in than moved out.

Source: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026. Retrieved 30 August 2026.

The 5 areas bordering Harding County

Ordered by the length of the border actually shared, which the Census Bureau publishes in its county adjacency file and which no other county reference presents.

Bordering areaStateShared borderPopulation
Union CountyNew Mexico70 mi3,844
San Miguel CountyNew Mexico59 mi26,260
Mora CountyNew Mexico56 mi4,051
Quay CountyNew Mexico39 mi8,454
Colfax CountyNew Mexico24 mi12,184

Source: US Census Bureau, County Adjacency File, 2025 County Adjacency File, released 15 September 2025. Retrieved 30 August 2026.

All 33 counties of New Mexico

Open the interactive New Mexico county map, or jump straight to any of them.

Data on this page last rebuilt 30 August 2026. How these figures are produced.