Willoughby ranked #12485 among U.S. baby names in 2024. Since 1915, 309 babies have been named Willoughby, peaking in 2021 with 17 births. The 1920s were its biggest decade, with 82 births. Willoughby is on the rise, up about 49% over the past five years. Willoughby is given to both girls and boys.