The term city is defined by the Parliament of Lithuania as a compact urban area with more than 3,000 people, of whom at least two-thirds work in the industry or service sector.
The cities started to form between the 13th and 14th centuries together with the Grand Duchy of Lithuania.
Some of the newer cities grew because of railroad construction, for example Kaišiadorys, Vievis, Radviliškis, Ignalina and Mažeikiai.
In the 20th century, cities grew next to big industrial centers, for example Visaginas, Elektrėnai and Naujoji Akmenė.
Five cities (Birštonas, Druskininkai, Neringa, Palanga and Anykščiai) have a special resort status.