|Elevation||840 ft (260 m)|
|Time zone||UTC-6 (Central (CST))|
|• Summer (DST)||UTC-5 (CDT)|
|Area code(s)||815 & 779|
|GNIS feature ID||410374|
Holcomb is an unincorporated community in Ogle County, Illinois, United States. 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.
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