Total births
12
Recorded 2004–2006 Boys' name Peak 2004 12 births
Sef — boys' name
12 babies named Sef in U.S. Social Security records since 2004, with the highest year being 2004. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.
2000s
Peak decade
100% of everyone ever named Sef was born in this single decade.
2004
Single peak year
6 babies were named Sef in 2004 — its busiest year on record.
What the Data Says About Sef
The Social Security Administration has registered 12 babies named Sef between 2004 and 2006, spanning 3 consecutive years of U.S. birth records. As a boy's name, Sef currently falls outside the top 1,000 boys' names for 2006. The name reached its historical peak in 2004, when 6 babies received it in a single year.
Decade-level aggregation shows that Sef performed strongest in the 2000s, accumulating 12 births during that ten-year window.
No etymological entry is currently available for Sef 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 12 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.
Sef at a glance
Last recorded 2006Peak year
2004
Current rank
Unranked
Active since
2004
Sef popularity over time
Annual U.S. births registered with the Social Security Administration · 2006–2004
- Peak year (2004)
- 6
- Annual births at peak — across 3 years of records
Sef by decade
Total births in each ten-year window — peak vs trough at a glance
- Peak decade
- 2000s
- 12 births that decade — 100% of Sef's all-time total
Frequently Asked Questions
How popular is the name Sef? ▼
12 babies have been named Sef since 2004. It was last recorded in 2006. The peak year was 2004 with 6 births.
When was Sef most popular? ▼
Sef was most popular in the 2000s decade with 12 total births. The single peak year was 2004.
How long has the name Sef been used? ▼
Sef has been recorded in Social Security data since 2004, spanning 3 years of data through 2006.
What names are similar to Sef? ▼
Names with a similar sound or spelling include Seferino, Sefton, Sefa. These share a common prefix and are also used for boys.
Keep exploring Sef
Nearby Names Like Sef
Names with a similar sound, spelling, or feel to Sef
Compare Sef side by side: Sef vs Seferino Sef vs Sefton Sef vs Sefa
Related Names
Names with a similar number of total births
Baby Name Guides
Learn more about naming trends and how to use data to choose a name
What Drives Name Popularity
Celebrities, culture, sound patterns & generational cycles
Choosing a Unique Name with Data
Balance uniqueness, pronunciation & cultural fit
Name Trends by Decade
From 1920s conformity to modern diversity
Why Names Rise and Fall
Pop culture triggers, phonetic clustering & fastest movers
Explore more names
📖
Browse names A–Z
Every name in the SSA record, alphabetically
🏆
Popular rankings
Top boys', girls' & gender-neutral names
📈
Trending names
Fastest rising and falling names this year
⚖️
Compare names
Put two names side by side
🏷️
Name categories
Vintage, unisex, nature, rising and more
📚
Name guides
How to choose, trends, and SSA data explained
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, 2004–2006 (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.