boys' name ★ peaked 2022

Alonzo

Gender Boy Rank 2025 #511 Trend → Stable

A male given name from the Germanic languages, variant of Alfonso.

Rank 2025
#511
among boys · ↑1 vs 2024
Babies in 2025
590
named Alonzo · -1% vs 2024
How common
1 in 2,895
boys born in 2025
Peak year
2022
651 babies
All-time total
46,109
#536 all-time among boys
First recorded
1880
in Social Security records

Alonzo popularity over time

46,109 babies have been named Alonzo since 1880, according to official Social Security records. Switch measure to see births per year or the yearly rank.

Measure
Births per 1,000 babies of that sex, comparable across eras
0.380.751.131.518801900192019401960198020002020BoysGirls
BoysGirls

By decade. Change compares yearly averages, so the current partial decade is on equal footing. Best rank is the name's best yearly rank within the decade.

Decade Girls Boys Total Per year Change Best rank
1880s – 1,088 1,088 109 – #110
1890s – 879 879 88 -19% #150
1900s – 808 808 81 -8% #182
1910s – 2,218 2,218 222 +175% #223
1920s 10 2,986 2,996 300 +35% #310
1930s – 2,434 2,434 243 -19% #333
1940s 5 2,647 2,652 265 +9% #357
1950s 37 3,966 4,003 400 +51% #348
1960s 25 4,395 4,420 442 +10% #336
1970s 32 3,490 3,522 352 -20% #394
1980s 45 3,619 3,664 366 +4% #421
1990s – 4,262 4,262 426 +16% #465
2000s – 4,329 4,329 433 +2% #516
2010s – 5,251 5,251 525 +21% #469
2020s (to 2025) – 3,583 3,583 597 +14% #471

Where Alonzo is heading

A five-year projection from the recent trend in births per 1,000 boys (damped so it flattens over time), converted to babies at today's birth totals. The implied rank places that projection in the 2025 field. A projection, not a promise: real trends bend.

Year Projected babies Per 1,000 boys Implied rank
2026 589 0.34 outside top 500
2027 588 0.34 outside top 500
2028 588 0.34 outside top 500
2029 587 0.34 outside top 500
2030 587 0.34 outside top 500

Where Alonzo is most popular

Boys named Alonzo per 1,000 boys born in each state, 2021–2025. National average: 0.342 per 1,000. Strongest in Nevada, California, and Arizona.

Vs national average
well below below near national above well above no data

All 50 states and DC, sorted by rate. Counts are boys named Alonzo born 2021–2025; the per-1,000 rate makes states of different sizes comparable, and the last column shows each state against the national average.

State Boys 2021–2025 Per 1,000 vs national
Nevada 47 0.824 +141%
California 715 0.782 +128%
Arizona 123 0.752 +120%
Illinois 160 0.626 +83%
Texas 475 0.539 +57%
Colorado 69 0.535 +56%
Washington 86 0.526 +54%
Kansas 33 0.481 +41%
Oregon 35 0.461 +35%
New Mexico 14 0.425 +24%
Wisconsin 47 0.397 +16%
Oklahoma 33 0.373 +9%
Iowa 25 0.363 +6%
Indiana 54 0.337 ≈ national
Florida 148 0.313 -9%
Rhode Island 5 0.307 -10%
Maryland 36 0.302 -12%
Michigan 60 0.293 -14%
Georgia 72 0.284 -17%
Massachusetts 39 0.284 -17%
Nebraska 11 0.253 -26%
New Jersey 48 0.238 -30%
Virginia 44 0.232 -32%
Missouri 31 0.224 -35%
Utah 21 0.220 -36%
Ohio 58 0.219 -36%
North Carolina 55 0.215 -37%
Alabama 23 0.210 -39%
New York 85 0.196 -43%
South Carolina 16 0.155 -55%
Tennessee 27 0.150 -56%
Idaho 6 0.147 -57%
Pennsylvania 38 0.143 -58%
Minnesota 17 0.139 -60%
Kentucky 6 0.060 -83%
Louisiana 5 0.049 -86%
Alaska – – –
Arkansas – – –
Connecticut – – –
District of Columbia – – –
Delaware – – –
Hawaii – – –
Maine – – –
Mississippi – – –
Montana – – –
North Dakota – – –
New Hampshire – – –
South Dakota – – –
Vermont – – –
West Virginia – – –
Wyoming – – –

State counts come from the Social Security Administration's state files, which omit any state-year with fewer than five babies of a name, so small states can undercount slightly.

The story of Alonzo

Alonzo is uncommon for boys in the United States, ranked #511 in 2025 with 590 babies given the name. It is currently rising compared with a decade ago.

Since 1880, 46,109 American babies have been named Alonzo. Its peak came in 2022, when 651 newborns received the name, the signature sound of the 2020s.

The chart above shows the full history: the popularity view (births per 1,000 babies) is the honest comparison across generations, since total US births have changed enormously since 1880. Switch to the rank view to see where Alonzo stood among all boys' names in any year, or use the compare tool to plot it against other names.

How old are people named Alonzo?

The median living Alonzo is about 33 years old; half are between 14 and 56. An estimated 32 thousand people named Alonzo are alive in the United States today.

median 33 020406080100

Estimated from births per year and Social Security period life tables; an approximation of the living age distribution, by age in years.

Alonzo year by year

Every year since 2001, and five-year steps back to 1880. Rank is within each sex.

Year Girls Girls rank Boys Boys 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
2000 – – 435 #516
1995 – – 453 #477
1990 – – 432 #476
1985 – – 315 #488
1980 7 #8,196 363 #431
1975 7 #7,191 331 #432
1970 7 #6,382 403 #402
1965 7 #5,296 422 #376
1960 5 #6,400 464 #367
1955 8 #4,381 415 #354
1950 – – 364 #353
1945 – – 219 #408
1940 – – 256 #357
1935 – – 240 #354
1930 – – 268 #341
1925 – – 295 #336
1920 – – 308 #332
1915 – – 267 #318
1910 – – 90 #254
1905 – – 93 #190
1900 – – 116 #182
1895 – – 85 #185
1890 – – 88 #161
1885 – – 104 #130
1880 – – 122 #110

Famous people named Alonzo

The most globally famous bearers of the name, ranked by fame across Wikipedia editions (Pantheon project, MIT).

  1. 1 Alonzo Mourning Alonzo Mourning American basketball player (born 1970) Contemporary
  2. 2 Alonzo Church Alonzo Church American mathematician and computer scientist (1903–1995) Contemporary
  3. 3 Alonzo Babers Alonzo Babers American sprinter (born 1961) Contemporary
  4. 4 Alonzo Cano Alonzo Cano Spanish painter, architect and sculptor (1601-1667) 17th century

Portraits from Wikipedia (Wikimedia Commons).

Frequently asked questions

Quick answers about Alonzo, drawn from the same Social Security data as the charts above.

How old is the average Alonzo?

The median living Alonzo is about 33 years old. Half of all living Alonzos are between 14 and 56 years old.

How many people named Alonzo are alive today?

An estimated 32 thousand people named Alonzo are alive in the United States, based on 46,109 recorded births and Social Security life tables.

What does the name Alonzo mean?

A male given name from the Germanic languages, variant of Alfonso.

How popular is the name Alonzo in 2025?

Alonzo ranked #511 among boys' names in the United States in 2025, with 590 babies given the name, according to Social Security Administration data.

How many people are named Alonzo?

46,109 babies have been named Alonzo in the United States since 1880, based on Social Security card applications.

When was the name Alonzo most popular?

Alonzo peaked in 2022, when 651 newborns received the name.

Is Alonzo a boy or girl name?

Alonzo is overwhelmingly a boy's name: 100% of babies with the name.

Is the name Alonzo rising or falling?

Alonzo is on the rise, noticeably more popular now than a decade ago.

Will Alonzo become more popular?

Alonzo looks stable. If the recent trend holds, we project roughly 587 boys named Alonzo in 2030, ranking outside the top 500. Forecasts assume the current trend continues and become less certain further out.

Who are famous people named Alonzo?

Well-known people named Alonzo include Alonzo Mourning (basketball player), Alonzo Church (mathematician), Alonzo Babers (athlete).

Names like Alonzo

Names that sound and feel close to Alonzo: shared sounds, similar era, similar popularity. Each links to its full history.

Compare Alonzo with similar names → More names starting with A →