Eldora’s post office opened in 1853, and 33% of its homes were built before 1940
More historic than 84% of U.S. towns · #37 of 140 in Iowa. What drives it
4 places in town are on the National Register, among them a historic district with 62 buildings. Below: 1 old photo or paper, maps from 1886 on, and the census since 1870.
Founding year: the first Eldora post office (Blevins & Helbock, CC0).The full story ↓
History grade
What drives Eldora’s History grade
On its age, its old homes and the National Register, Eldora is more historic than 84% of U.S. towns, #37 of 140 in Iowa. Its National Register listings hold the grade up; its age pulls it down.
A−
HistoryA character grade: shown, never part of Eldora’s overall grade.
Iowa towns list more on the Register than most of the country (a typical Iowa town has 9.1 per 10,000 residents, the U.S. 2.4), so Eldora’s 248 sits above most of its state (95% of Iowa towns have fewer) while its 65 historic buildings outnumber those of 87% of U.S. towns.
How sure. Graded on any two of the three inputs instead, the letter would range from B+ to A+. The pre-1940 share is a Census survey estimate (±7.6 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 Eldora’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
National Park Service, National Register of Historic Places. Photos from Wikimedia Commons, credited on each place’s page.
Every building
Eldora, building by building, 1886–1920
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.
Passages that mention Eldora, cut from the printed page as they were published.
History of Hardin county, Iowa, together with sketches of its towns, villages and townships, educational, civil, military and political history ... and biographies of representative citizens1883 · page 602Read the page →
Read the text
township, were in the school house erected on the Conger farm, about two and a half miles southeast of the present town of Eldora, in the fall of 1853. Rev. J. It. Lowrance, a Cumberland Presbyterian, who had lately settled in the township, conducted the exercises and preached the discourse. There arc now in the township
Text read by machine from the scan; it may contain errors.
History of Hardin county, Iowa, together with sketches of its towns, villages and townships, educational, civil, military and political history ... and biographies of representative citizens1883 · page 600Read the page →
Read the text
Her father lived in Philadelphia until his death. Mr. McElroy came to Hardin county in August, 1856, and bought land for a farm in the town of Eldora; his family came the following year. They lived on this farm for fifteen years, when they removed to the village of Eldora, where they have since lived. Mr. and Mrs.
Text read by machine from the scan; it may contain errors.
Scans and text from the Internet Archive. Books published in 1930 or earlier, which are in the public domain.
Timeline
Eldora, 1853 to 1979
Woven from the archive, old maps, post office records, the National Register and the people born here.
US Post Offices dataset (Blevins & Helbock, CC0). Places and cemeteries from the USGS Geographic Names Information System (2021).
Questions about Eldora’s history
What year was Eldora founded?
The Eldora post office opened in 1853, the earliest record of the town by name (U.S. post office records).
How does Eldora rank for history?
Eldora is more historic than 84% of U.S. towns, #37 of 140 in Iowa. 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 Eldora?
4 listings: 3 buildings, among them the Hardin County Courthouse (listed 1981, the first), and 1 historic district, the Eldora Downtown Historic District, with 62 contributing buildings. 65 historic buildings in all.
How old are the homes in Eldora?
33% of Eldora’s homes were built before 1940 (Census estimate, ±7.6 points), against a typical 22% for an Iowa town; the median home was built in 1958.
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 (7), the Library of Congress (4), Wikidata (1), the National Register of Historic Places (4), 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, Sanborn fire insurance maps (Library of Congress) and old county and town histories (Internet Archive). Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.