Effective from 1 January 2011, Mollis is part of the municipality of Glarus Nord.

Of the rest of the land, 8.2% is settled (buildings or roads) and the remainder (5.9%) is non-productive (rivers, glaciers or mountains).

It consists of the village of Mollis and the hamlets of Beglingen on the Kerenzerberg and the alpine settlement of Mullern.Mollis had a population (as of 2010) of 3,337.

The former military airfield at Mollis was used first by the Swiss Air Force with jetfighters like de Havilland Vampire, Hawker Hunter and F-5E and F-5F until 1999 from Squadron 20.

In April 1923 was the first "Flugtag" )(Air Show) when Walter Mittelholzer made the first landing at Mollis and took passenger flights.

The 16th-century music theorist and humanist Heinrich Glarean was born there, where his father served for forty years on the town council.