Masculine dossier · first seen 1948

Kelby

Stable Decline Gradual decline from 1991

Peak era

1991

Peak births

187

Current vitality

Rare

Peak generation

Millennial

Quick answers about Kelby

How many people are named Kelby?

An estimated 3,850 living Americans are named Kelby.

How rare is Kelby?

Kelby is very rare among babies today, with 18 boys receiving the name in 2025, down 90.4% from its 1991 peak.

How old is the typical Kelby?

The median age of a living American named Kelby is approximately 31 years, with most bearers falling between 22 and 38 years old.

Is Kelby still popular?

Not especially. Kelby has been declining since its 1991 peak and registered 18 births in 2025.

Where is Kelby most common?

Kelby has its strongest geographic signal in Oklahoma, where it appears 5.4× more often than the national baseline.

1948Peak 19912025

Peak year

1991

Decline from peak

90.4%

2025

All-time

4,019

Kelby has been in gradual retreat. The last decade averaged 2.4× lower than the decade before it — a slow, steady fade rather than a collapse.

Kelby peaked in 1991, when 187 boys were given the name.

In 2025, only 18 boys were given the name.

Down 90.4% from its peak.

In all, the Social Security Administration has recorded about 4,019 Americans named Kelby since 1948.

Rarity score99th percentile rare

Peak generationMillennial

StabilityHighly era-bound

TrajectoryGradual decline from 1991

Living profile

3,881

Estimated living Americans with this name.

Median age31

Core range22–38

Playground Density Index 0.0%

Wave type

Steady Decline

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

Geographic heartland

Oklahoma

5.4× higher affinity than the national baseline.

Oklahoma · 1990s 5.4×

Utah · 1990s 4.3×

Texas · 1990s 1.7×