About the name Jaci
Jaci belongs to the Portuguese tradition. Its roots are documented, even though its precise meaning is not recorded in the standard references — an honest gap we prefer to a confident guess.
In the United States, Jaci first appears in Social Security records in 1934. It climbed to its best-ever rank of #1075 in 2005, and in 2024 50 babies received the name — 5,096 in total since 1880. Those are the official counts, not estimates.