Feminine dossier · first seen 1880
Theresa
Endangered
Down 98.9% from peak
Peak era
1961
Peak births
11,960
Current vitality
Fragile
Peak generation
Boomer
Quick answers about Theresa
How many people are named Theresa?
An estimated 223,864 living Americans are named Theresa.
How rare is Theresa?
Theresa is uncommon among babies today, with 136 girls receiving the name in 2025, down 98.9% from its 1961 peak.
How old is the typical Theresa?
The median age of a living American named Theresa is approximately 62 years, with most bearers falling between 52 and 68 years old.
Is Theresa still popular?
No. Theresa is endangered as a baby name, down 98.9% from its 1961 peak with 136 births in 2025.
Where is Theresa most common?
Theresa has its strongest geographic signal in New Hampshire, where it appears 6.1× more often than the national baseline.
1880Peak 19612025
Peak year
1961
Decline from peak
98.9%
2025
136
All-time
404,613
Where it lives now
Theresa is most concentrated in New Hampshire — about 6.1× the national rate in the 1920s. It also runs high in Rhode Island and Maine.
States where Theresa is given more often than the national average — its present-day heartland.