Feminine dossier · first seen 1915

Billi

Stable Decline Gradual decline from 1976

Peak era

1976

Peak births

Current vitality

Below reporting floor

Peak generation

Gen X

Quick answers about Billi

How many people are named Billi?

An estimated 1,530 living Americans are named Billi.

How rare is Billi?

Billi fell below the SSA's 5-birth reporting floor in 2025. It is extremely rare as a new baby name.

How old is the typical Billi?

The median age of a living American named Billi is approximately 50 years, with most bearers falling between 40 and 55 years old.

Is Billi still popular?

Not especially. Billi has been declining since its 1976 peak and registered 0 births in 2025.

Where is Billi most common?

Billi has its strongest geographic signal in Ohio, where it appears 1.8× more often than the national baseline.

1915Peak 19762025

Peak year

1976

Decline from peak

100%

2025

All-time

1,741

Billi last appeared in SSA records in 2020. Across its recorded history, about 1,741 American girls received the name.

Billi peaked in 1976, when 84 girls were given the name.

No girls were recorded with this name in 2025 — at least not five of them (the SSA's reporting floor).

Down 100% from its peak.

In all, the Social Security Administration has recorded about 1,741 Americans named Billi since 1915.

Rarity scoreStatistical floor

Peak generationGen X

StabilityHighly era-bound

TrajectoryGradual decline from 1976

Living profile

1,606

Estimated living Americans with this name.

Median age50

Core range41–56

Playground Density Index 0.0%

Wave type

Steady Decline

A name with a broad middle and a downward recent trajectory.

Geographic heartland

Ohio

1.8× higher affinity than the national baseline.

Ohio · 1970s 1.8×