The name Concha experienced significant fluctuations in popularity over the years, with a notable peak during World War I and a steady decline thereafter. Between 1903 and 1925, there were periods of high birth counts, reaching as many as 76 births in 1925. However, from 1926 onwards, the number of births with the name Concha began to decrease steadily, dropping to single digits by the mid-1940s and remaining low ever since, with some years recording no births at all after 1984. In total, there were 1691 births named Concha over the course of these years.