The Eldorado post office opened in 1895, the earliest record of the town by name. Another post office, Verand (1892), opened inside today’s city and later closed.
2020 census: 1,574131 years
How historic is Eldorado?
C−
More historic than 21% of U.S. towns, on its age, its old homes and the National Register.
Founding year: the first Eldorado post office (Blevins & Helbock, CC0).The full story ↓
History grade
What drives Eldorado’s History grade
On its age, its old homes and the National Register, Eldorado is more historic than 21% of U.S. towns. Its age holds the grade up; its share of homes from before 1940 pulls it down.
C−
HistoryA character grade: shown, never part of Eldorado’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 Eldorado’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 C− to C. The pre-1940 share is a Census survey estimate (±3.9 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 Eldorado’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
The location of present-day Eldorado was part of a land grant made by the state of Texas in 1878 to the Houston East and West Texas Railroad Company for the construction of a railroad. The land ended up being unused, and in 1895, W. B. Silliman acquired a stake in the area and established a townsite that he named Eldorado. He attracted residents from the nearby town of Verand by promising them free lots. A post office was opened in the same year and in 1896, the town had a population of 100.
Eldorado’s post office has been open since 1895. Another post office, Verand, opened and closed inside today’s town.
Verand
1892–1895
Eldorado
1895–today
18901960today
US Post Offices dataset (Blevins & Helbock, CC0). Places and cemeteries from the USGS Geographic Names Information System (2021).
Questions about Eldorado’s history
What year was Eldorado founded?
The Eldorado post office opened in 1895, the earliest record of the town by name (U.S. post office records).
How does Eldorado rank for history?
Eldorado is more historic than 21% 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 Eldorado?
3% of Eldorado’s homes were built before 1940 (Census estimate, ±3.9 points), against a typical 1.6% for a Texas 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, 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.
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