Willo
#10,867 in 2025Girls' nameMeaning not yet documented
Willo has been given to 637 babies in the U.S. since 1911. In 2025 it ranked #10,867 of 17,293 girls’ names in use. Its peak year was 1924, with 23 recorded.
Babies named Willo, 2025
1 in 368,000
Willo over time, 1880–2025
Based on births in the U.S. Babies given the name each year. Hover the chart — or focus it and use the arrow keys — for any year. Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.
How common is Willo?
Everything below is computed from the 2025 data — the most recent year available.
- Among all babies, 2025
- 1 in 368,000
- 9 of 3,315,165 births
- Among girls only
- 1 in 179,000
- <0.01% of girls
- Rank, 2025
- #10,867
- of 17,293 girls’ names in use
- Coin-flip room size
- 255,323 kids
- Even odds of a second one
Where Willo sits on the popularity scale
Chance at least one other child shares the name
If the other children were drawn at random from the 2025 national name distribution. Real classrooms cluster by region and community, so treat these as a floor, not a ceiling.
Put another way: gather 255,323 children born in 2025 and it's an even bet that one of them is another Willo. In a class of 30 the chance is Under 1%.
When Willos were born
Half of everyone ever recorded as Willo was born before 1935 — so the typical Willo is around 90 today.
- Biggest decade
- 1930s
- 26.1% of all use
- Born in the last 25 years
- 23.7%
- Spread across generations
- Recorded since 1950
- 188
- People you could plausibly meet
1930s — 26.1% of all recorded uses (166).
Is Willo rising or falling?
Rank movement and count movement can disagree — the number of distinct names in use keeps growing, so a name holding a steady count still slides down the list. Both are shown.
- Rank vs 1 year ago
- —
- Not ranked then
- Rank vs 5 years ago
- +6,514
- Places climbed
- Rank vs 10 years ago
- +922
- Places climbed
- Births vs 10 years ago
- 1.00×
- More babies than then
- Share of its own peak
- 39.1%
- Peak was 1924 (23)
- Years since peak
- 101
- Years
- Year-to-year steadiness
- Volatile
- 42.9% average annual change
Spellings of Willo
Willo is not the most common spelling — Jill is, with 29.1% against Willo's 0.09%.
Grouped by closeness of spelling (up to two letter changes), same sex, with a floor on all-time use. It catches Sophia/Sofia and Aiden/Ayden, and misses spellings that sound alike but look different, like Sean and Shawn.
Where Willo is used
Across 1910–2025, Willo was most concentrated in Alabama — about 1 in 100,000 girls, against 1 in 90,653 across all states with data.
Most concentrated
- 1Alabama1 in 100,000
Shading is the share of that state's recorded girls given this name, not the raw count — otherwise the map would just show which states are biggest. Unshaded states have no published records for this period. U.S. birth records suppress state-year counts below 5; state counts therefore don't add up to the national total. Every state links to its full rankings. Willo has too little recent state data to map, so this covers all years from 1910.
Willo around the world
Where Willo ranks in official birth records elsewhere in the world. Rankings only — the number of births isn’t comparable between places, so it isn’t shown.
- France2012–2025#6,235in 2025
Popularity data from Institut national de la statistique et des études économiques. INSEE data under Licence Ouverte / Etalab 2.0.
Willo by the numbers
The raw record for each sex the name is used for.
Names similar to Willo
Matched on shared beginnings and endings, similar length, and comparable popularity.
Sibling names for Willo
Names from the same era and popularity tier — the two things that make a sibling set feel deliberate — skipping lookalike spellings and shared initials.