In 2025, 6 US boys were named Waldo, making it the 11,906th most common boys’ name of the year. Its best rank for boys was #347, reached in 1881. The most boys given the name in a single year was 174, in 1915. For comparison, it was #9,510 in 2015 and #1,179 in 1950.
Social Security card records list Waldo in 141 years of the 146 from 1880 to 2025, starting in 1880 with 10 babies. In all, 5,722 US babies have been given the name, 0.1% of them girls and 99.8% boys. Its busiest decade was the 1920s, with 1,361 babies named Waldo.
Over the 10 years from 2016 to 2025, 52 US boys were named Waldo; the busiest of those years was 2017, with 11. In 2025 that was about 1 in 284,679 of the boys in SSA’s list for the year.
The open nickname list we use links it to Ossy and Ozzy.