 erhards grove township is a township in otter tail county, minnesota, united states. the population was 467 at the 2000 census. ==geography== according to the united states census bureau, the township has a total area of , of which  of it is land and  of it (4.80%) is water. ==demographics== as of the census of 2000, there were 467 people, 167 households, and 135 families residing in the township. the population density was 14.0 people per square mile (5.4/kmÂ²). there were 182 housing units at an average density of 5.5/sq&nbsp;mi (2.1/kmÂ²). the racial makeup of the township was 96.79% white, 0.43% african american, 0.64% [[n
Townships_in_Minnesota Townships_in_Otter_Tail_County,_Minnesota