On its age, its old homes and the National Register, White Rock is more historic than 8% of U.S. towns, #58 of 73 in New Mexico. Its National Register listings hold the grade up; its share of homes from before 1940 pulls it down.
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HistoryA character grade: shown, never part of White Rock’s overall grade.
New Mexico towns list about as much on the Register as the country (a typical New Mexico town has 2.2 per 10,000 residents, the U.S. 2.4), so White Rock’s 0.0 sits below most of its state (28% of New Mexico towns have fewer) while its 0 listings outnumber those of 23% of U.S. towns.
How sure. Graded on two of the three inputs, so a change in either one moves the letter more than it would with three. The pre-1940 share (±0.7 points) is firm at this size.
Founding year: our sources. Homes: Census ACS 2020–24. National Register: National Park Service, May 2026 list; each listing counted once (boundary changes and added documentation belong to their listing), and a historic district counts its contributing buildings. How TownRatings grades history →
What stands out about White Rock’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
In 1947 the United States Atomic Energy Commission acquired about 100 acres from the United States Forest Service to build a company town to house construction and other contractors’ workers who did not qualify to reside within the secured city of Los Alamos. The town was erected quickly from early 1949, with the intent to provide accommodation for up to 1800 residents by mid-September of that year. This was accomplished with standard building designs, many prefabricated, and included dormitories for 912 men and 32 women, 64 single-, 297 double- and 48 three-bedroom houses, all as rental properties, as well as provision for 217 mobile homes. A school, shopping center, post office and administration building were also included.
White Rock is more historic than 8% of U.S. towns, #58 of 73 in New Mexico. The History grade combines the town’s founding era, the share of homes built before 1940 and its National Register listings. It’s a character grade, so it isn’t part of the overall grade. How it works.
How old are the homes in White Rock?
0.5% of White Rock’s homes were built before 1940 (Census estimate), against a typical 2.3% for a New Mexico town; the median home was built in 1973.
Founding dates: Wikidata, Wikipedia, the U.S. post office records of Blevins & Helbock (CC0) and the Census. Homes by year built: Census ACS 2020–24. National Register of Historic Places: National Park Service (list of May 22, 2026). Old photos, postcards and papers: Wikimedia Commons, the Library of Congress and other public archives, credited on each item’s page. Maps: U.S. Geological Survey historical topographic maps (via Esri) and Sanborn fire-insurance maps (Library of Congress). History text and census tables: Wikipedia (CC BY-SA 4.0). Places that used to be: USGS Geographic Names Information System (2021).
From Wikimedia Commons (6), Wikipedia, U.S. Geological Survey historical maps and the USGS Geographic Names Information System. Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.
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