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History · De Kalb

De Kalb’s post office opened in 1840, and 41% of its homes were built before 1940

Below: 1 old photo or paper and old-book passages.

1840first post office
0on the National Register
41%homes built before 1940
1old photo or paper
From De Kalb’s archive · credits on each photo
Quick answers

How De Kalb began

When was De Kalb founded?

1840

The De Kalb post office opened in 1840, the earliest record of the town by name.

2020 census: 233186 years
Founding year: the first De Kalb post office (Blevins & Helbock, CC0).The full story ↓

What stands out about De Kalb’s past

Read from the archive, the National Register and the record. The page puts what stands out first.

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Decades since 1900 with photos
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0 of 10 decades. The empty ones are waiting for someone’s album.
The story

How De Kalb came to be

From Wikipedia’s history of De Kalb.

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De Kalb was originally known as Bloomington, and under the latter name was laid out in 1839. It was renamed in 1851 for Johann von Robais, Baron de Kalb, a major general in the American Revolutionary War. A post office called De Kalb has been in operation since 1840.

Text from Wikipedia, licensed CC BY-SA 4.0.

From the old history books

What they wrote about De Kalb in 1888

Passages that mention De Kalb, cut from the printed page as they were published.

The settlement of De Kalb County, while not so early as some of the neighboring divisions, dates back into the twenties, though in what year the first pioneers made their appearance is now a matter of conjecture. Traces of rude log cabins were found in several places throughout the southern part of…
History of Andrew and De Kalb counties, Missouri1888 · page 298Read the page →
Read the text

The settlement of De Kalb County, while not so early as some of the neighboring divisions, dates back into the twenties, though in what year the first pioneers made their appearance is now a matter of conjecture. Traces of rude log cabins were found in several places throughout the southern part of the county, where the first permanent settlers made their appearance, and the belief is current that families of hunters, trappers and adventurers, made certain localities of De Kalb a rendezvous a number of

Text read by machine from the scan; it may contain errors.
De Kalb — Organized February 25, 1845, and named in honor of the Baron De Kalb, of the Revolution, who fell at the battle of Camden.
History of Andrew and De Kalb counties, Missouri1888 · page 185Read the page →
Read the text

De Kalb — Organized February 25, 1845, and named in honor of the Baron De Kalb, of the Revolution, who fell at the battle of Camden.

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.

By decade

De Kalb, decade by decade

Then & now

Stand where they stood

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Grindstone Creek Bridge, Spanning Grindstone Creek at Cart Road No. 458, Osborn
Retake this viewGrindstone Creek Bridge, Spanning Grindstone Creek at Cart Road No. 458, Osborn

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Famous people

Famous people close to De Kalb

Nobody well known was born in De Kalb itself, so here are the best known from just nearby.

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Questions about De Kalb’s history

What year was De Kalb founded?

The De Kalb post office opened in 1840, the earliest record of the town by name (U.S. post office records).

Memory lane

What the archives can’t tell you, neighbors can.

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Sources

Where this page comes from

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). How TownRatings grades history →

From the Library of Congress (1), Wikipedia, the US Post Offices dataset (Blevins & Helbock), the USGS Geographic Names Information System 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.