Total births
637
Girls' name · since 1911
Willo
Since 1911, U.S. Social Security records show 637 babies named Willo, peaking in 1924. See the year-by-year trend, decade totals, and state rankings below, sourced from federal birth data.
- 637
- total births
- 1911–2025
- years on record
- 1930s
- peak decade
- 26%
- born in that decade
Willo sits outside today's top ranks for girls, with 637 recorded since 1911.
Social Security Administration records show Willo recorded 637 times among girls since 1911, though it doesn't currently rank among the most-used girls names, peaking in the 1930s. This profile derives year-by-year birth trends, decade totals, and state-level distribution directly from SSA birth-registration files spanning 1911 to 2025.
- 637 total births
- 1911–2025 years on record
- 1930s peak decade
- 26% born in that decade
Data updated Jun 2026
The verdict
637 girls have been named Willo since 1911, peaking in the 1930s, last recorded in 2025.
- 637
- total births
- 1911–2025
- years on record
- 1930s
- peak decade
- 26%
- born in that decade
1930s
Peak decade
26% of everyone ever named Willo was born in this single decade.
1924
Single peak year
23 babies were named Willo in 1924 - its busiest year on record.
Willo's usage pattern, beyond the headline number
Willo splits its recorded history at 1942: 38% of all births land in the more recent half, 62% in the earlier half, leaning more toward its earlier era than today's. The single quietest year was 1913 (5 births) -- compare that against the 1924 peak of 23 for a sense of just how much the name's popularity has swung.
Willo at a glance
Last recorded 2025Peak year
1924
Current rank
Unranked
Active since
1911
Willo popularity over time
Annual U.S. births registered with the Social Security Administration · 1911–2025
- Peak year (1924)
- 23
- Annual births at peak, across 115 years of records
Willo by decade
Total births in each ten-year window, peak vs trough at a glance
1930s was Willo's strongest decade.
166 babies received the name during that ten-year window, about 26% of all-time use.
Willo births by decade
Total births in each ten-year window
- 1910s
1910s
73 births
- 1920s
1920s
147 births
- 1930s
1930s
166 births
- 1940s 63
1940s
63 births
- 1950s 30
1950s
30 births
- 1960s 7
1960s
7 births
- 2000s 38
2000s
38 births
- 2010s
2010s
74 births
- 2020s 39
2020s
39 births
What this shows Peak: 1930s at 166 births (26% of all-time use).
How Willo compares to similarly-sized names
Years in SSA records vs. share of all-time use concentrated in the single peak year, among 15 girls names closest to Willo's total volume
Willo vs 15 similarly-sized girls names
Willo by state
Where Willo concentrates geographically, total births since 1911
| Rank | State | Visual share | Births | Share of total |
|---|---|---|---|---|
| #1 | Alabama | | 33 | 5.2% |
Alabama share of Willo's total US births 5.2%
33 of 637 births nationwide.
Frequently Asked Questions
How popular is the name Willo? ▼
637 babies have been named Willo since 1911. It was last recorded in 2025. The peak year was 1924 with 23 births.
When was Willo most popular? ▼
Willo was most popular in the 1930s decade with 166 total births. The single peak year was 1924.
Where is Willo most popular? ▼
The top states for the name Willo are Alabama (33 births).
How long has the name Willo been used? ▼
Records for Willo go back to 1911, giving 115 years of history through 2025.
What names are similar to Willo? ▼
Names with a similar sound or spelling include Willie, Wilma, Willow, Willa, and 4 more. These share a common prefix and are also used for girls.
What to do with Willo's data
- Willo's decade-level peak was the 1930s (166 total births); usage has since declined to 39 in the 2020s -- if you're weighing a "classic revival" angle, the trend line argues against it.
- Alabama records the most Willos (33 births) -- see the full state breakdown if geography matters to your decision. Alabama names
- Weighing it against an alternative? Put two names side by side. Compare names
Figures reflect SSA-reported births only; see the methodology above for the privacy-suppression floor.
Keep exploring Willo
Nearby Names Like Willo
Names with a similar sound, spelling, or feel to Willo
Willie Girl
#13478 146,197 births
Wilma Girl
#3967 140,101 births
Willow Girl
#41 65,095 births
Willa Girl
#423 32,824 births
William Girl
#10275 16,029 births
Compare Willo side by side: Willo vs Willie Willo vs Wilma Willo vs Willow
Related Names
Names with a similar number of total births
Data Sources
Data as of June 2026. Source: U.S. Social Security Administration (SSA).
According to the Social Security Administration, this profile draws directly from the agency's public-use baby-name files (updated June 2026). See our methodology for the full extraction, aggregation, and privacy-suppression rules.
Primary: Source: U.S. Social Security Administration, Baby Names from Social Security Card Applications, National Data, 1911–2025 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
Cite this page
NameAlmanac Editorial. "Willo: Baby Name Since 1911 - 637 Births, Peak 1924." NameAlmanac. Accessed via https://namealmanac.com/name/willo. Licensed CC BY-SA 4.0.
Name Almanac is rendered directly from the Social Security Administration's public baby-name files, no number is typed in by an editor. This profile for Willo draws directly on SSA national and state-level files, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of June 2026.