Thea Girl
How popular is Thea?
#353 girl name in 2025
867 baby girls were named Thea in the US in 2025, making it the 353rd most popular girl name.
18,654living people named Thea (est.)
9median age of people named Thea
20,118babies named Thea since 1880
1 in 3,824US babies born in 2025
Thea popularity over time
Boys Girls
| Rank in 2025 | #353 for girls (▼ 5 from 2024) |
|---|---|
| Babies in 2025 | 867 girls |
| 10-year trend | Rising (+26% babies vs 2015) |
| Earlier ranks | #463 in 2015, #302 in 2020 |
| Peak year | 2018 (1,209 girls) |
| Highest rank | #268 in 2017 |
| First recorded | 1880 |
| Boys vs girls (last 10 years) | 0% boys, 100% girls |
| Chance a classmate shares it | 0.6% in a class of 25 kids born in 2025 |
Where Thea is most popular
Babies named Thea per 1,000 girls born in each state, 2021 to 2025. Darker means more common.
AKMEVTNHWAIDMTNDMNILWIMINYRIMAORNVWYSDIAINOHPANJCTCAUTCONEMOKYWVVAMDDEAZNMKSARTNNCSCDCOKLAMSALGAHITXFL
- North Dakota: 3.0 per 1,000 (40 girls)
- South Dakota: 2.9 per 1,000 (42 girls)
- Montana: 2.3 per 1,000 (31 girls)
- Nebraska: 2.1 per 1,000 (76 girls)
- Iowa: 1.8 per 1,000 (108 girls)
Thea by decade
| Decade | Baby girls | Best rank |
|---|---|---|
| 1880s | 86 | #686 |
| 1890s | 105 | #596 |
| 1900s | 87 | #857 |
| 1910s | 157 | #1,178 |
| 1920s | 254 | #1,233 |
| 1930s | 207 | #1,350 |
| 1940s | 431 | #1,101 |
| 1950s | 1,027 | #833 |
| 1960s | 1,099 | #933 |
| 1970s | 1,008 | #1,074 |
| 1980s | 1,022 | #1,064 |
| 1990s | 952 | #1,215 |
| 2000s | 1,362 | #1,357 |
| 2010s | 6,408 | #268 |
| 2020s | 5,908 | #300 |
Girl names about as popular as Thea
Questions
- Is Thea a boy or girl name?
- Thea is mostly a girl name. Over the last 10 years, 100% of babies named Thea were girls.
- How popular is the name Thea?
- 867 baby girls were named Thea in the US in 2025, making it the 353rd most popular girl name.
- When was Thea most popular?
- Thea peaked in 2018, when 1,209 girls were given the name. Its highest rank was #268 in 2017.
- How many people are named Thea?
- 20,118 babies have been named Thea in the US since 1880. We estimate about 18,654 of them are alive in 2026, with a median age of 9.
- Where is Thea most popular?
- From 2021 to 2025, Thea was most common in North Dakota, at 3.0 of every 1,000 girls born there.
Source: Social Security Administration baby name data, 1880 to 2025 (names given to at least 5 babies of a sex in a year). Living-people and median-age figures are our estimates using US life tables. How we calculate.