Fewer than five US boys were named Wm in 2025, so it does not appear in that year’s SSA list for boys. Its best rank for boys was #376, reached in 1888. The most boys given the name in a single year was 85, in 1916. For comparison, it was unranked (under five boys) in 2015 and unranked in 1950.
Social Security card records list Wm in 101 years of the 146 from 1880 to 2025, starting in 1880 with 14 babies. In all, 2,736 US babies have been given the name, 3.1% of them girls and 97% boys. Its busiest decade was the 1920s, with 630 babies named Wm.
In none of the 10 years from 2016 to 2025 were five or more US boys named Wm.
Meaning
Meaning not yet researched.
We publish a meaning only with a cited source and a confidence label, and never generate one. Meanings are being researched for the most common names first.