County Maps US

Socorro County, New Mexico

A county in New Mexico, ranked 23 of 33 by population.

CountyFIPS 35053

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

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Population
15,838
-713 (-4.3%) since 2020
Land area
6,646
square miles. A further 0.0% of the total area is water
Population density
2.4
people per square mile, computed rather than published
County seat
Socorro
Seat of county government.
Established
1852
173 years ago
Largest city
Socorro city
Population 8,261.

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 Socorro 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 Socorro 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 614 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 Socorro 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
Population15,83823rd of 332,048th of 3,144
Land area6,646 sq mi2nd of 3350th of 3,144
Population density2.4 per sq mi26th of 332,952nd of 3,144
Median household income$36,57031st of 323,107th of 3,143

Full data for Socorro County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population15,838Vintage 2025 Population Estimates
Population in 202016,551Vintage 2025 Population Estimates
2020 estimates base?16,597Vintage 2025 Population Estimates
Land area6,646 sq mi2025 Gazetteer Files
Water area1.9 sq mi2025 Gazetteer Files
Total area6,648 sq mi2025 Gazetteer Files
Population density?2.4 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$36,570American Community Survey 2020-2024 5-Year Estimates
Median home value$137,500American Community Survey 2020-2024 5-Year Estimates
Median age40.3American Community Survey 2020-2024 5-Year Estimates
Households5,269American Community Survey 2020-2024 5-Year Estimates
Housing units7,693American 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
-73
135 births, 208 deaths
Net migration
-19
More people moved out than moved in.

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

The 6 areas bordering Socorro 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
Lincoln CountyNew Mexico81 mi19,844
Sierra CountyNew Mexico78 mi11,395
Catron CountyNew Mexico77 mi3,827
Valencia CountyNew Mexico47 mi82,013
Torrance CountyNew Mexico40 mi16,100
Cibola CountyNew Mexico30 mi26,807

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.