Soo
UnisexGirls' nameBoys' nameMeaning not yet documented
Soo has been given to 211 babies in the U.S. since 1961. It was used fewer than 5 times in 2025, so it doesn't appear in the latest year's list — today it's a genuinely uncommon pick. Its peak year was 1990, with 14 recorded. It's used for both sexes: 91% girls, 9% boys all-time.
Babies named Soo, 2004
1 in 764,000
Soo 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 Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.
Girls or boys — Soo over time
In 2004, Soo went to 100% girls and 0% boys.
A sex is only published in years it reached five applications, so a stretch at 0% or 100% means the other side stayed under that floor — not that it was never used.
How common is Soo?
Soo had fewer than 5 recorded uses in 2025, so these figures use 2004, the last year it was published.
- Among all babies, 2004
- 1 in 764,000
- 5 of 3,820,181 births
- Among girls only
- 1 in 367,000
- <0.01% of girls
- Rank, 2004
- Unranked
- Fewer than 5 uses
- Coin-flip room size
- 529,591 kids
- Even odds of a second one
Where Soo sits on the popularity scale
Chance at least one other child shares the name
If the other children were drawn at random from the 2004 national name distribution. Real classrooms cluster by region and community, so treat these as a floor, not a ceiling.
Put another way: gather 529,591 children born in 2004 and it's an even bet that one of them is another Soo. In a class of 30 the chance is Under 1%.
When Soos were born
Half of everyone ever recorded as Soo was born before 1987 — so the typical Soo is around 38 today.
- Biggest decade
- 1990s
- 33.2% of all use
- Born in the last 25 years
- 72.5%
- A modern name
- Recorded since 1950
- 193
- People you could plausibly meet
1990s — 33.2% of all recorded uses (64).
Is Soo 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
- New entry
- Not ranked then
- Rank vs 10 years ago
- —
- Not ranked then
- Births vs 10 years ago
- —
- Not published both years
- Share of its own peak
- 0%
- Peak was 1990 (14)
- Years since peak
- 35
- Years
- Year-to-year steadiness
- Volatile
- 26.2% average annual change
Where Soo is used
Across 1910–2025, Soo was most concentrated in California — about 1 in — girls, against 1 in 3,202,555 across all states with data.
Most concentrated
- 1California1 in —
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. Soo has too little recent state data to map, so this covers all years from 1910.
Soo around the world
Where Soo 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.
- Canada1995–1995#2,576in 1995
- South Australia1973–2000#727in 2000
Popularity data from Statistics Canada and Consumer and Business Services (South Australia). StatCan data under Statistics Canada Open Licence. CBS SA data under CC BY 4.0.
Soo by the numbers
The raw record for each sex the name is used for.
As a girl's name
Names similar to Soo
Matched on shared beginnings and endings, similar length, and comparable popularity.
Sibling names for Soo
Names from the same era and popularity tier — the two things that make a sibling set feel deliberate — skipping lookalike spellings and shared initials.