Karla is also a modern Spanish variant of Carla. It is more used in Latin America rather than Spain (source: https://forebears.io/forenames/karla).There are 1.958 bearers of this name in Spain, and the average age of the bearers is 15 (source: Instituto Nacional de Estadística).
Usages: HungarianSource: https://hu.wikipedia.org/wiki/Karola -- mention Karla(Information from name #348563 originally submitted by user epresvanilia)
More than 99.9 percent of people with the first name Karla are female. Also Lithuanian and Yiddish.
― Anonymous User 6/6/2017
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Also the Croatian form. This is the most common form used, its variant Karola was once commonplace but would be considered old fashioned today. [noted -ed]
https://www.behindthename.com/name/karla/top/united-states
https://www.behindthename.com/name/karla/top/england-wales
https://www.behindthename.com/name/carla
https://en.wiktionary.org/wiki/Karla
https://en.wikipedia.org/wiki/Karla_(name)
In the USA, beginning in 1991, this variant is more popular than Carla.
In 2002, Karla ranked #175 in the USA, while Carla only ranked #386.
https://www.behindthename.com/name/karla/top/united-states?compare=carla
Also of Spanish and Brazilian Portuguese usage.
https://www.behindthename.com/name/karla/top/brazil
https://www.popular-babynames.com/name/karla
https://forebears.io/forenames/karla
https://en.wikipedia.org/wiki/Karla_%C3%81lvarez