Founding year: Wikidata. First post office: 1911.The full story ↓
History grade
What drives Delta’s History grade
On its age, its old homes and the National Register, Delta is more historic than 44% of U.S. towns, #50 of 119 in Utah. Its share of homes from before 1940 holds the grade up; its age pulls it down.
C+
HistoryA character grade: shown, never part of Delta’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 Delta’s 2.7 sits near the middle of its state (49% of Utah towns have fewer) while its 1 listings outnumber those of 51% of U.S. towns.
How sure. Graded on any two of the three inputs instead, the letter would range from C− to B+. The pre-1940 share is a Census survey estimate (±9.9 points). Two sources give 1906.
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 Delta’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
Delta was originally a railroad switch called Aiken. In 1905 Aiken was renamed Melville when Millard County began plans to set up irrigation and a dam. People purchased land for 50 cents an acre as long as they agreed to develop a 40-acre lot. The name was changed again because of the similarities between Melville and Millville, another town in Utah. The name was changed on 12 May 1908 to Burtner. The name was finally changed to Delta on May 11, 1911. The name was chosen as the area was a delta of the Sevier River.
Every edition of the U.S. Geological Survey’s map of Delta. Tap a year, or press play to watch the town change.
1962Delta sheet · 1:62,500
U.S. Geological Survey historical topographic maps (public domain), via Esri’s collection of the scans. The red ring marks the center of Delta.
Every building
Delta, building by building, 1918–1923
Fire insurance maps drew every building, what it was made of and what it was used for, so insurers could price the risk of fire. Pick a year, then a sheet.
In 1906, according to Wikidata. Delta’s post office opened in 1911, and the census of 1910 counted 459 people here.
How does Delta rank for history?
Delta is more historic than 44% of U.S. towns, #50 of 119 in Utah. 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.
What is on the National Register in Delta?
One place: the Van's Hall (listed 1995).
How old are the homes in Delta?
25% of Delta’s homes were built before 1940 (Census estimate, ±9.9 points), against a typical 2.8% for an Utah town; the median home was built in 1975.
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 (12), the National Register of Historic Places (1), Wikipedia, Wikidata and Wikipedia for famous people, U.S. Geological Survey historical maps, U.S. Census counts (via Wikipedia), the US Post Offices dataset (Blevins & Helbock), the USGS Geographic Names Information System and Sanborn fire insurance maps (Library of Congress). Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.