Guilford Township covers an area of ; of this, or 0.37 percent is water. The streams of Black Creek, Clarks Creek, Guilford Branch, Hendricks Creek, Leg Creek, Middle Creek, Moore Creek, Penns Run, Rail Run, Rock Creek, Rogers Creek and West Fork Hendricks Creek run through this township.
Cities and towns •
Plainfield (vast majority)
Unincorporated towns •
Friendswood (This list is based on USGS data and may include former settlements.)
Adjacent townships •
Washington Township (north) •
Wayne Township, Marion County (northeast) •
Decatur Township, Marion County (east) •
Madison Township, Morgan County (southeast) •
Brown Township, Morgan County (south) •
Monroe Township, Morgan County (southwest) •
Liberty Township (west)
Cemeteries The township contains three active cemeteries: Maple Hill, Sugar Grove and Fairfield Friends. There are four historical cemeteries in the township that have been moved or are no longer in use: the Indiana Boys' School, Lick Branch, Ramsey Family, and White Lick Friends.
Major highways •
Interstate 70 •
U.S. Route 40 •
State Road 67 •
State Road 267 ==Education==