Founding year: the first Sidney post office (Blevins & Helbock, CC0).The full story ↓
History grade
What drives Sidney’s History grade
On its age, its old homes and the National Register, Sidney is more historic than 62% of U.S. towns. Its share of homes from before 1940 holds the grade up; its age pulls it down.
B
HistoryA character grade: shown, never part of Sidney’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 Sidney’s 10.5 sits near the middle of its state (58% of Iowa 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 (±5.6 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 Sidney’s past
Read from the archive, the National Register and the record. The page puts what stands out first.
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.
1886Sheet 1 of 1
Edition
Sheets
BrickWoodStone
Sanborn Map Company, via the Library of Congress. Editions published in 1930 or earlier, which are in the public domain.
Sidney was laid out in 1851 and was originally to be named Dayton. The surveyors were boarding with the Milton Richards family. Richards' wife suggested they rename the city for her hometown of Sidney, Ohio.
The Sidney Iowa Championship Rodeo, operated by American Legion Post No. 128 since 1924, claims to be the world's largest continuous outdoor rodeo and one of the world's largest rodeos with around 38,000 visitors each year. The event is held in late July/early August.
Passages that mention Sidney, cut from the printed page as they were published.
History of Fremont County, Iowa1881 · page 605Read the page →
Read the text
The final publication, and one which completed the act of incorporation, was the following, which, however, bears no date: Now, an election having been held in pursuance of the foregoing notice in the incorporated city of Sidney, Iowa, on the said 28th day of May, A. D. 1870, the following named persons were duly elected as officers of the incorporated town of Sidney, as shown by the returns of said election now on file in the office of the circuit clerk of Fremont county, Iowa, to-wit: Giles Cowles, Mayor; Mero Webster, Recorder; F. Bartholomei, Treasurer.
Text read by machine from the scan; it may contain errors.
History of Fremont County, Iowa1881 · page 604Read the page →
Read the text
In pursuance of a decree issued from the circuit court of Fremont county, Iowa, at the April term of 1870, notice is hereby given that there will be a meeting of the qualified electors of the territory as described and platted, will be held at the court house in Sidney on Saturday, the 7th day of May, 1870, to vote on a proposition to incorporate s aid territory as the city of Sidney. The limits of said incorporation to embrace an area of one mile square as follows, to wit: Commencing at the northeast corner of the southeast quarter of the northeast quarter of section twenty-six, township sixty-nine, range forty-two; thence south
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
Sidney, 1851 to 1985
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 Sidney’s history
What year was Sidney founded?
The Sidney post office opened in 1851, the earliest record of the town by name (U.S. post office records).
How does Sidney rank for history?
Sidney is more historic than 62% 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.
What is on the National Register in Sidney?
One place: the Fremont County Courthouse (listed 1981).
How old are the homes in Sidney?
25% of Sidney’s homes were built before 1940 (Census estimate, ±5.6 points), against a typical 22% for an Iowa town; the median home was built in 1966.
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 (2), the Library of Congress (4), 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, 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.
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