Most of Rocky Ridge was built recently: 0.0% of its homes predate 1940 and the median home dates from 2006. Below: maps from 1951 on and the census since 2000.
On its age, its old homes and the National Register, Rocky Ridge is among the newest of U.S. towns. Its National Register listings hold the grade up; its age pulls it down.
D−
HistoryA character grade: shown, never part of Rocky Ridge’s overall grade.
Utah towns list more on the Register than most of the country (a typical Utah town has 3.0 per 10,000 residents, the U.S. 2.4), so Rocky Ridge’s 0.0 sits below most of its state (18% of Utah towns have fewer) while its 0 listings outnumber those of 23% of U.S. towns.
How sure. Graded on any two of the three inputs instead, the letter would still be D−. The pre-1940 share is a Census survey estimate (±6.5 points). Two sources give 1998.
Founding year: Wikidata (other dates in Quick answers). 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 Rocky Ridge’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
The original community in the area was known as York and was the southern terminus of the Utah Southern Railroad from February 1875 to May 1979. (The Utah Southern Railroad was controlled by the Union Pacific Railroad.) However, after the railroad was extended further south, the community of York was essentially abandoned. A post office had been established in the community in 1875, but it closed in 1879.
In 1998, according to Wikidata. the census of 2000 counted 403 people here.
How does Rocky Ridge rank for history?
Rocky Ridge is among the newest of U.S. towns. 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 Rocky Ridge?
0.0% of Rocky Ridge’s homes were built before 1940 (Census estimate, ±6.5 points), against a typical 2.8% for an Utah town; the median home was built in 2006.
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 (1), Wikipedia, U.S. Geological Survey historical maps, U.S. Census counts (via Wikipedia) 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.
2008
