Founding year: the first Sheldon post office (Blevins & Helbock, CC0).
History grade
What drives Sheldon’s History grade
On its age, its old homes and the National Register, Sheldon is more historic than 40% of U.S. towns, #107 of 140 in Iowa. Its share of homes from before 1940 holds the grade up; its age pulls it down.
C+
HistoryA character grade: shown, never part of Sheldon’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 Sheldon’s 1.8 sits near the middle of its state (37% 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 (±4.8 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 Sheldon’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.
Sanborn Map Company, via the Library of Congress. Editions published in 1930 or earlier, which are in the public domain.
The story so far
Sheldon, in brief
Wikipedia doesn’t have a history of Sheldon yet. The photos, dates and memories neighbors add here are how it gets written.
Sheldon is a city in O'Brien and Sioux counties in the U.S. state of Iowa, along the Floyd River. The population was 5,512 at the time of the 2020 census; it is the largest city in O'Brien County.
Its first post office opened in 1872. Between the 2010 and 2020 censuses its population grew from 5,188 to 5,512 (+6%).
Intro from Wikipedia. Population: U.S. Census Bureau.
From the old history books
What they wrote about Sheldon in 1897
Passages that mention Sheldon, cut from the printed page as they were published.
History of O'Brien County, Iowa, from its organization to the present time1897 · page 421Read the page →
Read the text
In January, 1877, Sheldon had a population of 350, and the Sheldon Mail at that time estimated the 1876 improvements of private parties at $8,950, and the improvements in the town in the way of sidewalks and other improvements at $10,000. In March, 1877, there was held Sheldon's second municipal election, with the following result: Mayor . . H. B. Wyman Councilmen G. H. Boutelle, Charley
Text read by machine from the scan; it may contain errors.
History of O'Brien County, Iowa, from its organization to the present time1897 · page 103Read the page →
Read the text
Some few in Baker and Carroll in 1869 and 1870, but the first in Floyd in 187 1. These did not increase much until the Sioux City & St.' Paul railroad, now the Chicago, St. Paul, Minneapolis & Omaha reached the townsite of Sheldon, which was July 3, 1872. From then on the western part settled rapidly, and government claims were soon all taken. In 187 1 and until July 1872, the settlers in the western part of the county, did about all of their hauling from Cherokee, and some from
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
Sheldon, 1872 to 1997
Woven from the archive, old maps, post office records, the National Register and the people born here.
Nothing in the archives for these yearsWeddings on Main Street, storms, parades, school pictures, the old store. If it’s in your family album, it belongs here.
The Sheldon post office opened in 1872, the earliest record of the town by name (U.S. post office records).
How does Sheldon rank for history?
Sheldon is more historic than 40% of U.S. towns, #107 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 Sheldon?
One place: the Carnegie Library (listed 1977).
How old are the homes in Sheldon?
11% of Sheldon’s homes were built before 1940 (Census estimate, ±4.8 points), against a typical 22% for an Iowa town; the median home was built in 1970.
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 (3), the Library of Congress (3), the National Register of Historic Places (1), 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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