Dex Boy
How popular is Dex?
#4,856 boy name in 2025
20 baby boys were named Dex in the US in 2025, making it the 4856th most popular boy name.
647living people named Dex (est.)
11median age of people named Dex
658babies named Dex since 1880
1 in 165,767US babies born in 2025
Dex popularity over time
| Rank in 2025 | #4,856 for boys (▼ 1065 from 2024) |
|---|---|
| Babies in 2025 | 20 boys |
| 10-year trend | Falling (-23% babies vs 2015) |
| Earlier ranks | #3,980 in 2015, #3,342 in 2020 |
| Peak year | 2016 (43 boys) |
| Highest rank | #2,708 in 1985 |
| First recorded | 1952 |
| Boys vs girls (last 10 years) | 100% boys, 0% girls |
| Chance a classmate shares it | 0.0% in a class of 25 kids born in 2025 |
Where Dex is most popular
Babies named Dex per 1,000 boys born in each state, 2021 to 2025. Darker means more common.
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- Illinois: 0.0 per 1,000 (5 boys)
- California: 0.0 per 1,000 (7 boys)
Dex by decade
| Decade | Baby boys | Best rank |
|---|---|---|
| 1950s | 5 | #3,732 |
| 1980s | 79 | #2,708 |
| 1990s | 74 | #3,965 |
| 2000s | 46 | #6,432 |
| 2010s | 272 | #2,782 |
| 2020s | 182 | #3,175 |
Boy names about as popular as Dex
Questions
- Is Dex a boy or girl name?
- Dex is mostly a boy name. Over the last 10 years, 100% of babies named Dex were boys.
- How popular is the name Dex?
- 20 baby boys were named Dex in the US in 2025, making it the 4856th most popular boy name.
- When was Dex most popular?
- Dex peaked in 2016, when 43 boys were given the name. Its highest rank was #2,708 in 1985.
- How many people are named Dex?
- 658 babies have been named Dex in the US since 1880. We estimate about 647 of them are alive in 2026, with a median age of 11.
- Where is Dex most popular?
- From 2021 to 2025, Dex was most common in Illinois, at 0.0 of every 1,000 boys 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.