Founding year: the first Elmo post office (Blevins & Helbock, CC0).The full story ↓
History grade
What drives Elmo’s History grade
On its age, its old homes and the National Register, Elmo is more historic than 13% of U.S. towns. Its age holds the grade up; its share of homes from before 1940 pulls it down.
D
HistoryA character grade: shown, never part of Elmo’s overall grade.
Few Texas towns list much on the Register (a typical Texas town has 0.0 per 10,000 residents, the U.S. 2.4), so Elmo’s 0.0 sits below most of its state (34% of Texas 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 range from D to C. The pre-1940 share is a Census survey estimate (±3.4 points). The founding year is the first post office, not a stated founding date.
Founding year: the first post office (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 Elmo’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
Elmo's history began in 1870 when the Texas and Pacific Railway laid track through the area. A community subsequently emerged at the railhead, and it was decided that the new town be named in honor of Elmo Scott, a T&P Railroad surveyor. Elmo received a post office in 1873, and by the mid-1880s, it possessed several mills, five churches, schools, and approximately 900 residents. Throughout the remainder of the 19th century, however, the population declined, and by 1945 only 150 people resided in Elmo. By 1990, this figure had fallen to 90 and remained at this level through to the 2000 Census.
The Elmo post office opened in 1873, the earliest record of the town by name (U.S. post office records).
How does Elmo rank for history?
Elmo is more historic than 13% 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 Elmo?
0.0% of Elmo’s homes were built before 1940 (Census estimate, ±3.4 points), against a typical 1.6% for a Texas town; the median home was built in 1987.
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 Wikipedia, Wikidata and Wikipedia for famous people, the US Post Offices dataset (Blevins & Helbock) 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.