US rank #2921 Girls' name Peak 1968 39,476 births

Sonja — #2921 US girls' name

39,476 babies named Sonja in U.S. Social Security records since 1906, with the highest year being 1968. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.

1900s61910s891920s2311930s31431940s50811950s46191960s109601970s79631980s32401990s16962000s11872010s9562020s305
#2921
of 17,661 girls in use

More common than 83% of names given to girls today.

1960s
Peak decade

28% of everyone ever named Sonja was born in this single decade.

1968
Single peak year

1,339 babies were named Sonja in 1968 — its busiest year on record.

What the Data Says About Sonja

The Social Security Administration has registered 39,476 babies named Sonja between 1906 and 2024, spanning 119 consecutive years of U.S. birth records. As a girl's name, Sonja currently holds the #2921 rank among girls for 2024. The name reached its historical peak in 1968, when 1,339 babies received it in a single year.

Decade-level aggregation shows that Sonja performed strongest in the 1960s, accumulating 10,960 births during that ten-year window. Across the 13 decades of recorded activity, Sonja shows a clear decline from its mid-century high. Geographically, the name is most concentrated in California, which accounts for 3,607 births — the largest state-level total in the dataset — followed by Texas and Illinois. In total, SSA state-level files list Sonja in 51 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Sonja in our reference dataset. These figures derive from SSA's annual national and state-level name files, which include any name appearing at least five times in a given year or state-year; names below that threshold are suppressed for privacy and therefore excluded from the totals shown here. The 39,476 total represents a lower bound — actual usage may be higher in years or states where the count fell below the disclosure floor. This page is provided for informational and research purposes only and does not constitute personal, legal, or naming advice.

Sonja at a glance

Outside the top 1,000

Total births

39,476

Since 1906

119 years of records

Peak year

1968

1,339 births that year

Strongest decade: 1960s

Current rank

#2,921

Among girls

As of 2024

Active since

1906

Recorded for 119 years

Last year on file: 2024

Sonja popularity over time — girls

Annual U.S. births registered with the Social Security Administration · 2024–1906

Outside the top 1,000
Peak year (1968)
1,339
Annual births at peak — across 119 years of records
-50005001,0001,500 202420091994197919641949193419191906 6

Sonja popularity over time — boys

44 total births recorded since 1938 (Sonja as boys' name)

Unisex variant — 44 births
45678910 1973197119671966194319391938 5

Sonja by decade

Total births in each ten-year window — peak vs trough at a glance

Peak: 1960s
Peak decade
1960s
10,960 births that decade — 28% of Sonja's all-time total
1900s61910s891920s2311930s31431940s50811950s46191960s109601970s79631980s32401990s16962000s11872010s9562020s305

Sonja by state

Where Sonja concentrates geographically — total births since 1906

Geographically diffuse
Top 8 states by recorded births for the name Sonja
Rank State Visual share Births Share of total
#1 California
3,607 9.1%
#2 Texas
2,387 6.0%
#3 Illinois
1,848 4.7%
#4 New York
1,827 4.6%
#5 Ohio
1,513 3.8%
#6 Minnesota
1,451 3.7%
#7 Florida
1,396 3.5%
#8 Georgia
1,387 3.5%
California share of Sonja's total US births 9.1%
Even split

3,607 of 39,476 births nationwide. Compared to a flat distribution across 51 reporting states.

Sonja appears in 51 states. Explore state details →

Frequently Asked Questions

How popular is the name Sonja?
39,476 babies have been named Sonja since 1906. It currently ranks #2921 among girls. The peak year was 1968 with 1,339 births.
When was Sonja most popular?
Sonja was most popular in the 1960s decade with 10,960 total births. The single peak year was 1968.
Where is Sonja most popular?
The top states for the name Sonja are California (3,607 births), Texas (2,387 births), Illinois (1,848 births).
How long has the name Sonja been used?
Sonja has been recorded in Social Security data since 1906, spanning 119 years of data through 2024.
What names are similar to Sonja?
Names with a similar sound or spelling include Sonia, Sonya, Sondra, Sona, and 4 more. These share a common prefix and are also used for girls.

Keep exploring Sonja

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Data Sources

Data as of 2024. Source: U.S. Social Security Administration (SSA).

Primary: Source: U.S. Social Security Administration, Baby Names from Social Security Card Applications — National Data, 1906–2024 (ssa.gov/oact/babynames). National-level data includes all names with 5 or more occurrences in a given year.

State-level: Source: U.S. Social Security Administration, Baby Names — State-Level Files (namesbystate.zip). Includes all names with 5 or more occurrences per state per year; rarer names are excluded for privacy.