[citation needed] Determining the ethnic population of Dellville is a challenge, as the area is not a census designated place.

Despite these factors, sourcing historical documents and county data makes it clear (albeit with imperfect accuracy) that Dellville is predominantly German ethnically, though sizable Irish population exists as well.

[14] Dellville is one of many villages and towns in Perry County to have the Shermans Creek, which flows into the Susquehanna River in Duncannon,[15] run through it.

[20] The land surrounding Dellville is primarily agricultural, as is evident by satellite imagery,[21] as well as historical documents pertaining to the founding of the village.

[22] The woodlands surrounding Dellville predominantly contain red maple,[23] pitch pine,[24] eastern white pine,[25] eastern hemlock,[26] birch, shagbark hickory,[27] and beech trees, though American sycamore, ironwood, black walnut, juniper, oak, elm, alder, and sassafras are also fairly common.