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Boy's name · #511 in the US (2025) · Timeless
Few names move less than Alonzo — on the books since 1880, #511 in 2025, and dependable in between. Roughly 46,000 boys share it. In all that time it has never once missed a year of the national records.
See where Alonzo is more common.
Appears in 2020-2025 birth records of 34 states. See the full state-by-state map on this page.
See how Alonzo ranks in other countries and regions.
#1,271 in France (2025) · #1,711 in England & Wales (2025) · #1,184 in Canada (2024).
Among 271 notable people named Alonzo:
Military figures appear 2.47× more often than among typical names — e.g. Alonzo Garcelon, American politician (1813–1906).
Together with its spelling variant Alonso (#785), Alonzo would rank around #358 with about 910 births last year — the newborns split about 65/35 between Alonzo and Alonso.
About 91 boys a year are given Lonnie as their full name.
Similar names: Alonso · Lewis · Alfred · Vincenzo · Marshall · Harley
Browse more boy names — popularity, trends and eras for 5,700+ American names, free.