Unisex name · since 1957
Zo
Since 1957, U.S. Social Security records show 310 babies named Zo, peaking in 2017. See the year-by-year trend, decade totals, and state rankings below, sourced from federal birth data.
- #15,641 of 72,339
- all-time among girls
- #13,438 of 17,297
- 2025 SSA year
- 310
- born since 1957
- 2010s
- peak decade
310 babies have been named Zo since 1957, making it today's #13438 unisex name.
Zo has 310 recorded births among girls since 1957, per the U.S. Social Security Administration, ranked #13438 as of the latest data, more common than 22% of girls, busiest in the 2010s -- see the year-by-year trends, decade totals, and state-level distribution below, all drawn directly from SSA birth-registration files spanning 1957 to 2025.
- #15,641 of 72,339 all-time among girls
- #13,438 of 17,297 2025 SSA year
- 310 born since 1957
- 2010s peak decade
Data updated Aug 2026
The verdict
According to the U.S. Social Security Administration, Zo ranks #15,641 of 72,339 girls' names by all-time recorded births (highest first) and #13,438 of 17,297 among girls' names in 2025. 310 born since 1957, peaking in the 2010s.
- #15,641 of 72,339
- all-time among girls
- #13,438 of 17,297
- 2025 SSA year
- 310
- born since 1957
- 2010s
- peak decade
Zo's 310 recorded births place it above 78.37% of the 72,339 girls names in the full SSA archive.
The state file records this name in 2 jurisdictions, led by Arizona.
How Zo compares
310 46th percentile among 17,297 names currently given to girls
Based on all-time total births among currently-ranked girls names. Names with fewer occurrences are grouped into wider buckets on the right.
Source U.S. Social Security Administration, national baby name data
How the numbers stack up
Zo's all-time total is 18% below the median girls name, and Olivia still leads by a wide margin.
| Metric | Zo | Median girls name (Kyann) | #1 girls name (Olivia) |
|---|---|---|---|
| All-time total births | 310 | 376 | 567,345 |
| Peak-year births | 40 | 21 | 19,840 |
Zo's usage pattern, beyond the headline number
Divide Zo's SSA record in two at 2016 and the more recent half accounts for 76% of all births, the earlier half the remaining 24%, consistent with a name still gaining ground rather than fading. Its calmest year was 1957, with only 6 births recorded -- set against the 2017 peak of 40, that's the full swing in one name's fortunes.
Zo popularity over time - girls
Annual U.S. births registered with the Social Security Administration · 1957–2025
- Peak year (2017)
- 40
- Annual births at peak, across 69 years of records
Zo popularity over time - boys
101 total births recorded since 2000 (Zo as boys' name)
Zo by decade
2010s is the heaviest window (173 births, 56% of the file).
2010s was Zo's strongest decade.
173 babies received the name during that ten-year window, about 56% of all-time use.
Zo births by decade
Total births in each ten-year window
- 1950s 6
1950s
6 births
- 2000s 13
2000s
13 births
- 2010s
2010s
173 births
- 2020s
2020s
118 births
What this shows Peak: 2010s at 173 births (56% of all-time use).
Zo by state
Where Zo concentrates geographically, total births since 1957
| Rank | State | Visual share | Births | Share of total |
|---|---|---|---|---|
| #1 | Arizona | | 121 | 39.0% |
| #2 | South Carolina | | 40 | 12.9% |
121 of 310 births nationwide. Compared to a flat distribution across 2 reporting states.
Frequently Asked Questions
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What to do with Zo's data
- Zo's usage has stayed within range of its 2010s decade-level peak (173 total births) through the 2020s (118) -- a comparatively stable name, not a fading trend.
- Arizona records the most Zos (121 births) -- see the full state breakdown if geography matters to your decision. Arizona names
Figures reflect SSA-reported births only; see the methodology above for the privacy-suppression floor.
Keep exploring Zo
Nearby Names Like Zo
Names with a similar sound, spelling, or feel to Zo
Compare Zo side by side: Zo vs Zoe Zo vs Zoey Zo vs Zoie
Related Names
Names with a similar popularity rank to Zo
Nationwide names with similar peak year or record span
Two nationwide peer axes for Zo: closest SSA peak year, and closest first→latest record span. Distinct from the spelling and current-rank neighborhoods above.
Similar peak year (~2017)
Similar record span (~68 yrs)
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, 1957–2025 (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 Zo 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.