Tia is of Latin origin, meaning 'third'. It's often considered a diminutive form of longer names like Theresa, but it stands beautifully on its own. Tia gained popularity in the latter half of the 20th century and has since become a beloved choice among parents seeking unique yet familiar-sounding names for their daughters.
"The name Tia saw a peak in popularity between 1980 and 1983, with 27 babies named Tia born during these years alone. However, its popularity dipped afterwards, with fewer than ten births per year from 1985 onwards, except for a brief rise to eight in 1989."