Total births
310
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.
- #11277
- among girls today
- 310
- born since 1957
- 2010s
- peak decade
- 36%
- more common than other girls
310 babies have been named Zo since 1957, making it today's #11277 unisex name.
Zo has 310 recorded births among girls since 1957, per the U.S. Social Security Administration, ranked #11277 as of the latest data, more common than 36% 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.
- #11277 among girls today
- 310 born since 1957
- 2010s peak decade
- 36% more common than other girls
Data updated Jun 2026
The verdict
Zo is currently the #11277 unisex name in America, more common than 36% of girls - 310 born since 1957, peaking in the 2010s.
- #11277
- among girls today
- 310
- born since 1957
- 2010s
- peak decade
- 36%
- more common than other girls
Zo vs. every other girls name in current SSA rankings
#11277
of 17,726 girls in use
More common than 36% of names given to girls today.
2010s
Peak decade
56% of everyone ever named Zo was born in this single decade.
2017
Single peak year
40 babies were named Zo in 2017 - its busiest year on record.
How Zo compares
310 46th percentile among 17,726 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 19% below the median girls name, and Olivia still leads by a wide margin.
| Metric | Zo | Median girls name (Emerly) | #1 girls name (Olivia) |
|---|---|---|---|
| All-time total births | 310 | 382 | 567,345 |
| Peak-year births | 40 | 48 | 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 at a glance
Outside the top 1,000Peak year
2017
Current rank
#11,277
Active since
1957
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
Total births in each ten-year window, peak vs trough at a glance
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% |
Arizona share of Zo's total US births 39.0%
Even split
121 of 310 births nationwide. Compared to a flat distribution across 2 reporting states.
Frequently Asked Questions
How popular is the name Zo? ▼
310 babies have been named Zo since 1957. It currently ranks #11277 among girls. The peak year was 2017 with 40 births.
When was Zo most popular? ▼
Zo was most popular in the 2010s decade with 173 total births. The single peak year was 2017.
Where is Zo most popular? ▼
The top states for the name Zo are Arizona (121 births), South Carolina (40 births).
Is Zo a unisex name? ▼
Yes, Zo is used for both boys and girls. As a girl's name it has 310 births, and as a boy's name it has 101 births.
How long has the name Zo been used? ▼
Records for Zo go back to 1957, giving 69 years of history through 2025.
What names are similar to Zo? ▼
Names with a similar sound or spelling include Zoe, Zoey, Zoie, Zora, and 4 more. These share a common prefix and are also used for girls.
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
- 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 Zo
Nearby Names Like Zo
Names with a similar sound, spelling, or feel to Zo
Zoe Girl
#29 163,256 births
Zoey Girl
#59 115,332 births
Zoie Girl
#1364 11,182 births
Zora Girl
#915 10,202 births
Zola Girl
#1103 9,286 births
Compare Zo side by side: Zo vs Zoe Zo vs Zoey Zo vs Zoie
Related Names
Names with a similar popularity rank to Zo
Torri #11276
3,087 births · Peak 1993
Rebeka #11278
2,660 births · Peak 1991
Mishell #11275
516 births · Peak 2002
Krissy #11279
2,182 births · Peak 1978
Bethsaida #11274
363 births · Peak 2005
Dekota #11280
349 births · Peak 2006
Danah #11273
1,050 births · Peak 2012
Talisa #11281
2,084 births · Peak 1989
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, 1957–2025 (ssa.gov/oact/babynames).
State-level: Source: U.S. Social Security Administration, Baby Names, State-Level Files (namesbystate.zip).
Cite this page
NameAlmanac Editorial. "Zo: #11277 Unisex Name - 310 Births, Peak 2017." NameAlmanac. Accessed via https://namealmanac.com/name/zo. 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 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 June 2026.