Meaning and history
Lachlan is the Anglicized form of Lachlann, the Scottish Gaelic form of Lochlainn. It was especially popular in Australia toward the end of the 20th century.
20062006: 126 births, rank #1,306
2007: 124 births, rank #1,350
2008: 145 births, rank #1,211
2009: 152 births, rank #1,186
2010: 148 births, rank #1,206
20112011: 178 births, rank #1,056
2012: 188 births, rank #1,032
2013: 205 births, rank #974
2014: 236 births, rank #909
2015: 311 births, rank #767
20162016: 354 births, rank #698
2017: 353 births, rank #698
2018: 355 births, rank #687
2019: 369 births, rank #689
2020: 358 births, rank #705
20212021: 356 births, rank #725
2022: 345 births, rank #746
2023: 333 births, rank #771
2024: 389 births, rank #695
20252025: 468 births, rank #606
Lachlan rose from #695 to #606 for boys between 2024 and 2025. That year also produced its highest recorded birth count, at 468.