According to the 2010 census, the township has a total area of , of which (or 96.43%) is land and (or 3.57%) is water. Lakes in this township include Ball Lake, Fee Lake, Hamilton Lake, Jackson Lake, Johnson Lake and Round Lake. The stream of Black Creek runs through this township.
Cities and towns •
Hamilton (north three-quarters)
Unincorporated towns •
Clarks Landing at •
Forest Park at • Fountain Park at •
Island Park at •
Oakwood at • Otsego Center at •
Penn Park at •
Russels Point at (This list is based on USGS data and may include former settlements.)
Adjacent townships •
Scott Township (north) •
York Township (northeast) •
Richland Township (east) •
Troy Township, DeKalb County (southeast) •
Franklin Township, DeKalb County (south) •
Smithfield Township, DeKalb County (southwest) •
Steuben Township (west) •
Pleasant Township (northwest)
Cemeteries The township contains five cemeteries: Carter, Hamilton, North Otsego, Otsego Center and Teegardin.
Major highways •
Indiana State Road 1 •
Indiana State Road 427 ==References==