Unisex name · since 1961

Soo

193 babies named Soo in U.S. Social Security records since 1961, with the highest year being 1990. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.

#20,213 of 72,339
all-time among girls
193
born since 1961
1990s
peak decade

193 girls have been named Soo since 1961, though it isn't currently a top-ranked name.

Social Security Administration records show Soo recorded 193 times among girls since 1961, though it doesn't currently rank among the most-used girls names, peaking in the 1990s. This profile derives year-by-year birth trends, decade totals, and state-level distribution directly from SSA birth-registration files spanning 1961 to 2004.

  • #20,213 of 72,339 all-time among girls
  • 193 born since 1961
  • 1990s peak decade

Data updated Aug 2026

The verdict

According to the U.S. Social Security Administration, Soo ranks #20,213 of 72,339 girls' names by all-time recorded births (highest first). 193 born since 1961, peaking in the 1990s.

#20,213 of 72,339
all-time among girls
193
born since 1961
1990s
peak decade
Below the archive median
All-time archive position

Soo's 193 recorded births place it above 72.05% of the 72,339 girls names in the full SSA archive.

1 jurisdictions
State-record footprint

The state file records this name in 1 jurisdictions, led by California.

Soo's usage pattern, beyond the headline number

Divide Soo's SSA record in two at 1985 and the more recent half accounts for 55% of all births, the earlier half the remaining 45%, a genuinely balanced usage pattern. Its calmest year was 1961, with only 5 births recorded -- set against the 1990 peak of 14, that's the full swing in one name's fortunes.

Soo popularity over time - girls

Annual U.S. births registered with the Social Security Administration · 1961–2004

Last recorded 2004
Peak year (1990)
14
Annual births at peak, across 44 years of records
46810121416 1961197519811985199119962004 5

Soo popularity over time - boys

18 total births recorded since 1981 (Soo as boys' name)

Unisex variant - 18 births
456789 198119841994 5

Soo by decade

1990s is the heaviest window (64 births, 33% of the file).

1990s was Soo's strongest decade.

64 babies received the name during that ten-year window, about 33% of all-time use.

Soo births by decade

Total births in each ten-year window

births

What this shows Peak: 1990s at 64 births (33% of all-time use).

Source U.S. Social Security Administration · Baby Names As of August 2026

Soo by state

Where Soo concentrates geographically, total births since 1961

Geographically diffuse
Top 1 states by recorded births for the name Soo
Rank State Visual share Births Share of total
#1 California
5 2.6%
California share of Soo's total US births 2.6%

5 of 193 births nationwide.

Frequently Asked Questions

How popular is the name Soo?
193 babies have been named Soo since 1961. All-time, it sits at #20,213 of 72,339 girls' names by recorded births. It was last recorded in 2004. The peak year was 1990 with 14 births.
Where does Soo sit in the SSA name archive?
According to the U.S. Social Security Administration, Soo ranks #20,213 of 72,339 girls' names by all-time recorded births (highest first). All-time ordinal matches browse popularity (total births DESC); the current ordinal uses the null SSA file. See /methodology#corpus-placement.
When was Soo most popular?
Soo was most popular in the 1990s decade with 64 total births. The single peak year was 1990.
Where is Soo most popular?
The top states for the name Soo are California (5 births).
Is Soo a unisex name?
Yes, Soo is used for both boys and girls. As a girl's name it has 193 births, and as a boy's name it has 18 births.
How long has the name Soo been used?
Records for Soo go back to 1961, giving 44 years of history through 2004.
What names are similar to Soo?
Names with a similar sound or spelling include Sookie, Soon, Soojin, Sooner, and 3 more. These share a common prefix and are also used for girls.

What to do with Soo's data

  • Soo's decade-level peak was the 1990s (64 total births); usage has since declined to 17 in the 2000s -- if you're weighing a "classic revival" angle, the trend line argues against it.
  • California records the most Soos (5 births) -- see the full state breakdown if geography matters to your decision. California names

Figures reflect SSA-reported births only; see the methodology above for the privacy-suppression floor.

Keep exploring Soo

Nearby Names Like Soo

Names with a similar sound, spelling, or feel to Soo

Names with a similar number of total births

Nationwide names with similar peak year or record span

Two nationwide peer axes for Soo: closest SSA peak year, and closest first→latest record span. Distinct from the spelling and current-rank neighborhoods above.

Peak year is the single SSA year with the most births for that name; record span is first-to-latest year in the national files, not a recommendation or shared origin claim.

Data Sources

Data as of August 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, 1961–2004 (ssa.gov/oact/babynames).

State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).

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 Soo 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 August 2026.