Alonzo
Boy name · #511 in 2025 · Distinctive
Alonzo ranks #511 among American boys' names as of 2025, with 590 newborns given the name that year. A decade ago it stood at #527, so the name has been rising over the past ten years. Roughly one in every 3,051 boys born in 2025 was named Alonzo.
The 145-year story
Alonzo first appears in the Social Security records in 1880, when 122 boys received the name. Its all-time peak is essentially right now: 2022, with 651 babies and a rank of #471. Names at their peak can keep climbing — or be one trend cycle from the long slide that eventually hits most popular names. Following the curve matters more than today's snapshot: a name's position on its rise-peak-decline arc is the best predictor of how common it will feel in a kindergarten class five years from now.
Babies named Alonzo per year. Source: SSA.
Unlock the 5-year forecast and compare Alonzo against up to 5 other names.
Uniqueness: will there be another Alonzo in class?
On our rarity read — which blends how common Alonzo is today with its five-year momentum — the name reads as "distinctive". That middle band is the sweet spot many parents hunt for: recognizable without being everywhere.
Where Alonzo is most common
Geography matters for names, and Alonzo is no exception. Adjusted for how many boys are born in each state, Alonzo is most common in NV (1 per 1,000), CA (0.8 per 1,000), WI (0.6 per 1,000), IL (0.6 per 1,000), AZ (0.6 per 1,000) — against a national average of about 0.4 per 1,000 boys. These are per-capita rates, so they show where Alonzo is a genuine regional favorite rather than just where the most babies are born.
Names like Alonzo
Statistically, parents drawn to Alonzo tend to be choosing among names with similar popularity arcs, era profiles, and sounds — the closest matches in our model are Vincenzo, Aurelio, Eliseo, Renzo, and Angelo.
VincenzoAurelioEliseoRenzoAngeloArturoMarcelAlonso
Rank history (last 25 years)
| Year | Babies named Alonzo | Rank |
|---|---|---|
| 2025 | 590 | #511 |
| 2024 | 595 | #512 |
| 2023 | 552 | #535 |
| 2022 | 651 | #471 |
| 2021 | 569 | #515 |
| 2020 | 626 | #477 |
| 2019 | 634 | #469 |
| 2018 | 612 | #476 |
| 2017 | 549 | #522 |
| 2016 | 499 | #565 |
| 2015 | 542 | #527 |
| 2014 | 527 | #528 |
| 2013 | 545 | #500 |
| 2012 | 454 | #568 |
| 2011 | 455 | #558 |
| 2010 | 434 | #581 |
| 2009 | 412 | #612 |
| 2008 | 483 | #543 |
| 2007 | 432 | #588 |
| 2006 | 450 | #559 |
| 2005 | 452 | #537 |
| 2004 | 421 | #547 |
| 2003 | 436 | #533 |
| 2002 | 433 | #523 |
| 2001 | 375 | #559 |
Frequently asked questions
Is Alonzo a popular boy name?
Alonzo ranked #511 among boys in 2025 with 590 babies given the name — outside the top 500, making it an uncommon pick. Ten years earlier it ranked #527.
When was the name Alonzo most popular?
Alonzo peaked in 2022, when 651 American boys received the name (ranked #471 that year). That peak is current — the name is at or near its all-time high right now.
How rare is the name Alonzo?
In 2025, roughly 1 in 3,051 newborn American boys was named Alonzo. On our rarity scale (rarity blended with momentum) we classify it as "distinctive".
Data source: U.S. Social Security Administration name statistics, 1880–2025, national and state files. Counts reflect Social Security card applications; names with fewer than 5 occurrences in a state-year are suppressed by the SSA.