Mainstream, the quality of being common, well received, in demand, widely understood
- See e.g.: popular culture, popular fiction, popular music, popular science
  - Popular clique, a contemporary youth subculture associated with preppy and Ivy league fashion. See also Jock.
Populace, the total population of a certain place
- Populism, a political philosophy, based on the idea that the common people are being exploited.
Informal usage or custom, as in popular names, as opposed to formal or scientific nomenclature

Companies

Popular, Inc., also known as Banco Popular, a financial services company
Popular Holdings, a Singapore-based educational book company
The Popular (department store), a chain of department stores in El Paso, Texas, from 1900

to 1995

The Popular Magazine, an American literary magazine that ran for 612 issues from November 1903 to October 1931

In media

"Popular" (Darren Hayes song) (2004), on the album The Tension and the Spark
"Popular" (Eric Saade song) (2011), on the album Saade Vol. 1
"Popular" (Nada Surf song) (1996), on the album High/Low
"Popular" (The Veronicas song) (2008), on the album Hook Me Up
"Popular" (Wicked song), in the musical Wicked
Popular, an unreleased album by Van Hunt
"Popular", a song by The Anchoress on the 2015 album Confessions of a Romance Novelist
"Popular", a song by Lil Wayne on the 2010 album I Am Not a Human Being

Popular (TV series), a teenage dramedy on the WB network
Popular: Finding Happiness and Success in a World That Cares Too Much About the Wrong Kinds of Relationships, a book by psychology professor Mitch Prinstein.