Janssen is a Dutch surname and given name, derived from the occupational term 'jan', meaning 'gravel' or 'sandy place'. It is often found among families who have historically lived near sandy areas or worked in occupations related to sand or gravel. The name's popularity has varied over time but remains relatively uncommon outside of the Netherlands.
The name Janssen experienced fluctuations in popularity over the decades, with a significant peak in recent years. The highest number of births was recorded in 2020 with 12 occurrences. Prior to that, the year with the most births was 1964, with 16 newborns sharing the name. There's a notable gap in popularity between 1974 and 1982, with only one or two births annually during this period. However, since then, the number of births has generally trended upwards, suggesting an increase in popularity for the name Janssen over time.