Jasper Township is one of twelve townships in Adams County, Iowa, USA. At the 2010 census, its population was 398. Geography Jasper Township covers an area of and contains no incorporated settlements. According to the USGS, it contains six cemeteries: Brooks, Barksdale, Calvary, Oak Hill, Old Brooks, and Prairie Rose. References External links US-Counties.com City-Data.com Townships in Adams County, Iowa Townships in Iowa