Meaning and history
From a surname derived from Lassy, a town in Normandy, the name ultimately comes from a Gaulish source, possibly a personal name Latinized as Lascius. In the United States, it was formerly used more often for boys, but it began rising in popularity for girls in 1975.
20062006: 246 births, rank #1,042
2007: 263 births, rank #1,003
2008: 205 births, rank #1,231
2009: 198 births, rank #1,246
2010: 170 births, rank #1,367
20112011: 142 births, rank #1,540
2012: 143 births, rank #1,539
2013: 156 births, rank #1,440
2014: 151 births, rank #1,479
2015: 160 births, rank #1,437
20162016: 119 births, rank #1,743
2017: 108 births, rank #1,876
2018: 108 births, rank #1,869
2019: 70 births, rank #2,508
2020: 69 births, rank #2,500
20212021: 88 births, rank #2,131
2022: 69 births, rank #2,554
2023: 60 births, rank #2,823
2024: 54 births, rank #3,013
20252025: 67 births, rank #2,583
Lacy moved from #892 to #943 for girls between 2004 and 2005. Its highest annual birth count came in 1982, with 988 births.