Allen County OHGenWeb
History & Genealogy


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the State Coordinator

Short About

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Township Range map

Allen County was formed April 1, 1820, from Indian Territory, and named in honor of a Col. Allen, of the war of 1812; it was temporarily attached to Mercer county for judicial purposes. The southern part has many Germans. A large part of the original settlers were of Pennsylvania origin. The western half of the county is flat, and presents the common features of the Black Swamp. The eastern part is gently rolling, and in the southeastern part are gravelly ridges and knolls. The "Dividing Ridge" is occupied by handsome, well-drained farms, which is in marked contrast with much of the surrounding county, which is still in the primeval forest condition. Its area is 440 square miles. [1]


In 1848, Allen County's boundaries changed with a reorganization that created Auglaize County, Ohio from the southern half of the original county. Town 2S, Range 7E (Monroe Twp.); Town 2S, Range 8E (Richland Twp.); the southern half of Town 2S, Range 5E, and the southern half of Town 2S, Range 6E (Sugar Creek Twp.) were transferred from Putnam County to Allen County. Parts of Van Wert County and Mercer Counties were also transferred to Allen to form Spencer Township and part of Marion Township. In May 1853, Allen and Putnam Counties agreed on a cash settlement for Putnam's loss.[2]

County Facts

Created: April 1, 1820,
Parent County:Created from Indian Territory
Named for: Colonel John Allen, who was killed leading his men at the Battle of Frenchtown, during the War of 1812.
County Seat: Lima, Ohio

Neighboring County Links


Mailing List

OHALLEN. A mailing list for anyone wishing to discuss history, research, ancestors relating to Allen County, Ohio, choose one. You must be a subscriber to post to the list. To subscribe, include the word "subscribe" (without quotes) in the body of an e-mail message to either the mail mode or digest versions. In "mail mode", you will receive each message separately. In "digest mode", you will receive one file with all of the messages for the day (depending on the activity).

This page was last modified: May 20, 2018 5:42 AM.


Historical Collections of Ohio: An Encyclopedia of the State, Volume 1 By Henry Howe (1889) Page 241

History of Allen County, Ohio. Chicago: Warner, Beers & Company. 1885. pp. 280–281.