Joy, happiness; or a variant of Laetitia
Latia is most commonly understood as a modern American variant of the Latin name Laetitia, which means joy or gladness. It may also be used as a rhythmic elaboration of the name Tia. While rare today, it follows the pattern of Latinate names ending in -ia that were popular in the late 20th century.
Less common today
Latia isn't in the latest US Top 1000. It last peaked at #1,195 in 1990.
US births per 5-year period, 1990βpresent (SSA data).