Glen Campbell only shares borders with two other municipalities; the townships of Banks to the north, east and west, and Montgomery to the south.

[3] The borough was named in 1889 for Cornelius Campbell, the first superintendent of the Glenwood Coal Company (glen is the Scottish word for valley), which mined in that area.

The papers were presented to the grand jury and after hearing the parties, and a full investigation of the matter, it was found that the law, under Act of Assembly, had been complied with and the prayer of the petitioners was granted.

[5] Michael William Menosky, a professional baseball player, also known as "Leaping Mike" for his speed and circus-like catches in the outfield, was born in Glen Campbell on October 16, 1894.

It was named for Cornelius Campbell, the first superintendent of the Glenwood Coal Company, the enterprise which initiated mining operations in the area.

The town quickly became the service, business, and shopping center for a number of smaller mining communities that sprang up in northern Indiana County.

In fact, residents of the community felt it was plausible that the county seat would someday be moved to Glen Campbell.

In 1905 the Giant Electric Light, Heat, and Power Company opened operations in Glen Campbell.

Other industries included a brickyard which was established on the Cush Creek, a stream that flows through the community, and a cooper's shop which manufactured barrels.

Labor unrest, the decline in coal output, the depletion of timber stocks, and a number of disastrous fires left Glen Campbell in serious financial condition.

It received national attention in 1971 when Glen Campbell, the country music singer, made a surprise visit.

The town's post office still provides rural services to a large area surrounding the borough.

There are a number of businesses, including some which are coal related, that call Glen Campbell home.

He was "Born in Montgomery Township, Indiana County, September 7, 1871, the son of John W. and Adah S. (Hiddlesen) Clark; educated in public schools; Dickinson Seminary (Williamsport); Germantown Academy; Eastman Business College, Poughkeepsie; partner in lumber business at Glen Campbell, Pa.; organizer and board member, First National Bank, Glen Campbell; elected president of same, 1905; investor and director of numerous coal, oil, water, glass, and electric companies throughout the United States; president of Royal Oil and Gas Co., 1936; elected to state Senate, 1921-1924; died July 21, 1936.″' [9] Glen Campbell is located at 40°49′9″N 78°49′35″W / 40.81917°N 78.82639°W / 40.81917; -78.82639 (40.819052, -78.826327).

[10] According to the United States Census Bureau, the borough has a total area of 0.9 square miles (2.3 km2), all land.