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Zosia

#4,170 in 2025Girls' name

Diminutive of Zofia

Zosia has been given to 511 babies in the U.S. since 1997. In 2025 it ranked #4,170 of 17,293 girls’ names in use. Its peak year was 2022, with 44 recorded.

Babies named Zosia, 2025

1 in 94,700

Zosia over time, 1880–2025

Girls
020406018801900192019401960198020002020

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 Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.

Zosia: meaning, origin, and history

Diminutive of Zofia

Deeper origin not confirmed in the cited records

What Zosia means

Zosia is a diminutive of Zofia.

Origin, language, and formation

Zosia is used in English and Polish.

Related names and everyday forms

Related names include Zofia.

Pronunciation and spelling

In English, Zosia is pronounced /ˈzoʊʃə/.

American usage and historical context

In the United States, 511 girls were recorded with the name Zosia between 1997 and 2025. Its highest annual count was 44 in 2022; its best national rank was #3,592 in 2022.

Over 5 years its rank rose, from #5,164 in 2020 to #4,170 in 2025. Over 10 years its rank rose, from #7,260 in 2015 to #4,170 in 2025.

Sources & methodologyReferences, data & attribution

Meaning, origin, and language notes draw on the references below.

American popularity figures use published Social Security Administration records for this exact spelling. Counts below five for a name, sex, and year are omitted.

Wiktionary material is available under CC BY-SA 4.0.

How common is Zosia?

Everything below is computed from the 2025 data — the most recent year available.

Among all babies, 2025
1 in 94,700
35 of 3,315,165 births
Among girls only
1 in 45,900
<0.01% of girls
Rank, 2025
#4,170
of 17,293 girls’ names in use
Coin-flip room size
65,655 kids
Even odds of a second one

Where Zosia sits on the popularity scale

Rarest published (5 a year)#1 — Olivia (13,544)

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.

Class of 20Under 1%
Class of 30Under 1%
Grade of 100Under 1%
School of 500Under 1%

Put another way: gather 65,655 children born in 2025 and it's an even bet that one of them is another Zosia. In a class of 30 the chance is Under 1%.

When Zosias were born

Half of everyone ever recorded as Zosia was born before 2017 — so the typical Zosia is around 8 today.

Median birth year
2017
About 8 years old
Biggest decade
2020s
38.4% of all use
Born in the last 25 years
94.3%
A modern name
Recorded since 1950
511
People you could plausibly meet
Choose a decade

2020s — 38.4% of all recorded uses (196).

Is Zosia 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
+385
Places climbed
Rank vs 5 years ago
+994
Places climbed
Rank vs 10 years ago
+3,090
Places climbed
Births vs 10 years ago
2.06×
More babies than then
Share of its own peak
79.5%
Peak was 2022 (44)
Years since peak
3
Years
Year-to-year steadiness
Volatile
26.1% average annual change
Best rank ever
#3,592
2022

Spellings of Zosia

Zosia is not the most common spelling — Sofia is, with 23.9% against Zosia's 0.07%.

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 Zosia is used

Across 1910–2025, Zosia was most concentrated in California — about 1 in — girls, against 1 in 814,834 across all states with data. It was least common in New York (1 in —).

00 per 100,000

Most concentrated

  1. 1California1 in —
  2. 2New York1 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. Zosia has too little recent state data to map, so this covers all years from 1910.

Zosia around the world

Where Zosia 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.

  • England & Wales
    2001–2025
    #2,788
    in 2025
  • Scotland
    2016–2016
    #798
    in 2016
  • Northern Ireland
    2017–2017
    #432
    in 2017
  • Ireland
    2016–2019
    #871
    in 2019
  • Canada
    2013–2023
    #2,672
    in 2023
  • South Australia
    1953–1953
    #449
    in 1953

Popularity data from Office for National Statistics, National Records of Scotland, Northern Ireland Statistics and Research Agency, Central Statistics Office, Statistics Canada and Consumer and Business Services (South Australia). ONS, NRS, NISRA data under Open Government Licence v3.0. CSO, CBS SA data under CC BY 4.0. StatCan data under Statistics Canada Open Licence.

Zosia by the numbers

The raw record for each sex the name is used for.

As a girl's name

Rank in 2025
#4,170
Trend vs 5 yrs ago
Up 994
Best rank ever
#3,592
2022
Peak year
2022
44 that year
First recorded
1997
Last recorded
2025
All-time count
511
Count in 2025
35

Names similar to Zosia

Matched on shared beginnings and endings, similar length, and comparable popularity.

NasiaJasiaKesiaMiasiaJessiaCesiaTessiaAnysiaPersiaKyasiaKasiaKassiaAnisiaAnasiaAysiaIasiaElsiaAleesiaLeasiaElyssiaBasiaLanasiaElaysiaBriasia

Sibling names for Zosia

Names from the same era and popularity tier — the two things that make a sibling set feel deliberate — skipping lookalike spellings and shared initials.

Explore around Zosia

Top names of 2022, Zosia's peak yearThe 2020s in fullOther names that peaked in 2022Girls' names starting with ZPolish Girl Names