Dennis Boy
How popular is Dennis?
#707 boy name in 2025
381 baby boys were named Dennis in the US in 2025, making it the 707th most popular boy name.
Dennis popularity over time
Boys Girls
| Rank in 2025 | #707 for boys (▲ 1 from 2024) |
|---|---|
| Babies in 2025 | 381 boys |
| 10-year trend | Falling (-36% babies vs 2015) |
| Earlier ranks | #494 in 2015, #647 in 2020 |
| Peak year | 1952 (24,552 boys) |
| Highest rank | #16 in 1949 |
| First recorded | 1880 |
| Boys vs girls (last 10 years) | 99% boys, 1% girls |
| Chance a classmate shares it | 0.3% in a class of 25 kids born in 2025 |
Dennis counting every spelling
Social Security counts each spelling as its own name. Adding together the spellings that sound alike, the Dennis family of names ranked #540 for boys in 2025, with 535 babies in all.
Spellings are grouped by how they sound, using our own rules, so a few groupings may not match how your family says the name.
Where Dennis is most popular
Babies named Dennis per 1,000 boys born in each state, 2021 to 2025. Darker means more common.
- Maryland: 0.4 per 1,000 (52 boys)
- Louisiana: 0.4 per 1,000 (39 boys)
- New Jersey: 0.4 per 1,000 (72 boys)
- Mississippi: 0.4 per 1,000 (20 boys)
- Virginia: 0.3 per 1,000 (66 boys)
Dennis by decade
| Decade | Baby boys | Best rank |
|---|---|---|
| 1880s | 1,107 | #105 |
| 1890s | 919 | #138 |
| 1900s | 988 | #158 |
| 1910s | 4,166 | #187 |
| 1920s | 8,145 | #154 |
| 1930s | 26,366 | #34 |
| 1940s | 162,114 | #16 |
| 1950s | 204,267 | #17 |
| 1960s | 94,984 | #31 |
| 1970s | 50,552 | #46 |
| 1980s | 30,463 | #80 |
| 1990s | 18,101 | #129 |
| 2000s | 10,445 | #251 |
| 2010s | 5,977 | #391 |
| 2020s | 2,406 | #644 |
Boy names about as popular as Dennis
Questions
- Is Dennis a boy or girl name?
- Dennis is mostly a boy name. Over the last 10 years, 99% of babies named Dennis were boys.
- How popular is the name Dennis?
- 381 baby boys were named Dennis in the US in 2025, making it the 707th most popular boy name.
- When was Dennis most popular?
- Dennis peaked in 1952, when 24,552 boys were given the name. Its highest rank was #16 in 1949.
- How many people are named Dennis?
- 623,692 babies have been named Dennis in the US since 1880. We estimate about 414,054 of them are alive in 2026, with a median age of 68.
- Where is Dennis most popular?
- From 2021 to 2025, Dennis was most common in Maryland, at 0.4 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.