Census 2010 race data for Nanty Glo show a racial breakdown of 0.4% black, 0.1% Asian, and 0.9% Hispanic.

According to oral history, the town name was changed to "Nant-y-glo" during the term of Montell Davis, through the intervention of Levi Swanson.

[9] By 1899 the huge coal deposits in the settlement had attracted additional settlers, and the Pennsylvania Railroad installed a spur line through the community that year.

Commercial mining was initiated in 1896 by Dr. James W. Dunwiddie of Pine Flats, Indiana County, who opened up what was then called Nanty Glo No.

Nanty Glo was described in the 1940 Pennsylvania guide as being "a valley coal town wrapped in a mist of sulphurous gas.

3 until 1922, when Coleman-Weaver dissolved and partner John Heisley Weaver, a Philadelphia industrialist, acquired sole ownership.

131 and later renamed it Bethelehem Mine 31 and moved its main entrance from Nanty Glo to Jackson Township (Leidy Portal).

The Blacklick Valley Junior-Senior High School (grades seven through 12) is at 555 Birch Street, Nanty Glo.

In the 1920s, a Kingdom Hall of Jehovah's Witnesses, a Finnish Lutheran Church, and a Jewish synagogue were started, all three of which no longer exist.

In addition to coal mining, Nanty Glo had at various times a chemical works, soft drink bottling plant, plastic factory, and a dress manufacturing firm.

After the city of Johnstown, Nanty Glo was the largest municipality in Cambria County, with a population of over 5,000, for most of the 20th century.

In late 1920 or early 1921, a small publication called the Nanty Glo Bulletin was published.

That paper was purchased by Herman Sedloff, a Russian emigre working as a typesetter in New York who moved to Nanty Glo specifically to establish a labor-oriented weekly newspaper.

The former Liberty Theater building has been acquired and is now being refurbished to display historical artifacts of the Blacklick Valley.

Just one mile north of U.S. Route 22, Nanty Glo is the major entry point to the Ghost Town Trail, a biking and walking trail that traverses much of Cambria County and adjacent Indiana County along former railroad beds.

Both Time and Life magazines did stories on Nanty Glo as their prime exhibit for their coverage of President Franklin Delano Roosevelt's taking control of the nation's coal mines after mine workers defied a congressional law by going on strike at the height of World War Two.

The May 10, 1943, edition of Life features a photo essay by Alfred Eisenstaedt of miners' everyday lives in Nanty Glo.

Students attend public schools in Nanty Glo from Belsano, Cardiff/Nettleton, Twin Rocks, Vintondale, and rural Blacklick Township.

Nanty Glo has close links with its twinned sister town of Nantyglo in Wales.