Recorded 1915–2020 Girls' name Peak 1976 1,740 births

Billi — girls' name

1,740 babies named Billi in U.S. Social Security records since 1915, with the highest year being 1976. Year-by-year trend, decade aggregates, and state-level rankings drawn from federal birth data.

1910s51940s301950s1491960s2801970s6431980s3191990s1842000s662010s582020s6
1970s
Peak decade

37% of everyone ever named Billi was born in this single decade.

1976
Single peak year

84 babies were named Billi in 1976 — its busiest year on record.

What the Data Says About Billi

The Social Security Administration has registered 1,740 babies named Billi between 1915 and 2020, spanning 106 consecutive years of U.S. birth records. As a girl's name, Billi currently falls outside the top 1,000 girls' names for 2020. The name reached its historical peak in 1976, when 84 babies received it in a single year.

Decade-level aggregation shows that Billi performed strongest in the 1970s, accumulating 643 births during that ten-year window. Across the 10 decades of recorded activity, Billi shows a clear decline from its mid-century high. Geographically, the name is most concentrated in Ohio, which accounts for 73 births — the largest state-level total in the dataset — followed by Pennsylvania and Iowa. In total, SSA state-level files list Billi in 12 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Billi 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 1,740 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.

Billi at a glance

Last recorded 2020

Total births

1,740

Since 1915

106 years of records

Peak year

1976

84 births that year

Strongest decade: 1970s

Current rank

Unranked

Outside the modern top-1,000

As of 2020

Active since

1915

Recorded for 106 years

Last year on file: 2020

Billi popularity over time — girls

Annual U.S. births registered with the Social Security Administration · 2020–1915

Last recorded 2020
Peak year (1976)
84
Annual births at peak — across 106 years of records
020406080100 202020091997198719771967195719451915 5

Billi popularity over time — boys

5 total births recorded since 2006 (Billi as boys' name)

Unisex variant — 5 births
5 2006 5

Billi by decade

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

Peak: 1970s
Peak decade
1970s
643 births that decade — 37% of Billi's all-time total
1910s51940s301950s1491960s2801970s6431980s3191990s1842000s662010s582020s6

Billi by state

Where Billi concentrates geographically — total births since 1915

Geographically diffuse
Top 8 states by recorded births for the name Billi
Rank State Visual share Births Share of total
#1 Ohio
73 4.2%
#2 Pennsylvania
53 3.0%
#3 Iowa
20 1.1%
#4 New York
18 1.0%
#5 Indiana
16 0.9%
#6 Michigan
11 0.6%
#7 Texas
10 0.6%
#8 Kentucky
6 0.3%
Ohio share of Billi's total US births 4.2%
Even split

73 of 1,740 births nationwide. Compared to a flat distribution across 12 reporting states.

Billi appears in 12 states. Explore state details →

Frequently Asked Questions

How popular is the name Billi?
1,740 babies have been named Billi since 1915. It was last recorded in 2020. The peak year was 1976 with 84 births.
When was Billi most popular?
Billi was most popular in the 1970s decade with 643 total births. The single peak year was 1976.
Where is Billi most popular?
The top states for the name Billi are Ohio (73 births), Pennsylvania (53 births), Iowa (20 births).
How long has the name Billi been used?
Billi has been recorded in Social Security data since 1915, spanning 106 years of data through 2020.
What names are similar to Billi?
Names with a similar sound or spelling include Billie, Billy, Billye, Billiejo, and 4 more. These share a common prefix and are also used for girls.

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, 1915–2020 (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.