Wikipedia doesn’t have a history of Holcomb yet. The photos, dates and memories neighbors add here are how it gets written.
Holcomb is an unincorporated community in Ogle County, Illinois, United States. As of the 2020 census, Holcomb had a population of 149. Holcomb is 3 miles (4.8 km) south of Davis Junction. Holcomb has a post office with ZIP code 61043. Holcomb was founded in 1876. It was named for William H. Holcomb (c. 1839–1908), General Manager of the Chicago and Iowa Railroad at the time. He was also the Superintendent of Transportation for the World's Columbian Exposition held in Chicago in 1893.
Its first post office opened in 1875.
Intro from Wikipedia. Population: U.S. Census Bureau.
On the map
Holcomb on the map, 1917 to 1993
Every edition of the U.S. Geological Survey’s map of Holcomb. Tap a year, or press play to watch the town change.
1917Kings sheet · 1:62,500
U.S. Geological Survey historical topographic maps (public domain), via Esri’s collection of the scans. The red ring marks the center of Holcomb.
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 Wikimedia Commons (6) and U.S. Geological Survey historical maps. Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.