Feminine dossier · first seen 1880

Theda

Stable Decline Gradual decline from 1919

Peak era

1919

Peak births

356

Current vitality

Below reporting floor

Peak generation

Greatest Generation

1880Peak 19192025

Quick answers about Theda

An estimated 1,632 living Americans are named Theda.

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

The median age of a living American named Theda is approximately 73 years, with most bearers falling between 63 and 83 years old.

Not especially. Theda has been declining since its 1919 peak and registered 0 births in 2025.

Peak year

1919

Decline from peak

100%

2025

All-time

6,556

Theda last appeared in SSA records in 2021. Across its recorded history, about 6,556 American girls received the name.

Theda peaked in 1919, when 356 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 6,556 Americans named Theda since 1880.

Rarity scoreStatistical floor

Peak generationGreatest Generation

StabilityHighly era-bound

TrajectoryGradual decline from 1919

Living profile

1,632

Estimated living Americans with this name.

Median age73

Core range63–83

Playground Density Index 0.0%

Wave type

Plateau

A name with moderate spread and no sharp recent move.