2,636 (1970 census)

3,806 (1990 census)

?? (2000 census)

It was separated from Franklin, Harrison, Clayton, and Woolwich Townships.

Elk Township is comprised of several small settlements namely : Aura (known as Union, Unionville, Union Station in early 1800`s), Ferrell,(earlier known as Fairview) , Hardingville, Lawns, Lake Garrison, Lake Gilman, Lakeview Park, Clayton Park, and parts of Ewan (earlier known as Ewan`s Mills) & Clayton. You also have the Still Run Development and The Covey Estates.

Still in the works (for the past 14 years) is The Silver Gate Development (672 acres) by the Quaker Group.

The official structure of Elk Township (back in 1976) consisted of a three-member Township committee, but in 1977 will Two more members were added and they now have five members. There is a nine-member school board, which is the controlling force of the Elk Township School system.

Elk Township has expanded it's services to the residents with the roadside pick-up of trash for the households. Recycling by residents to reduce waste. Also a road department was established around 1989.

A new Municipal Building was erected in 1985 to house the offices of the officials who formerly conducted business from their homes.