Duncan
Duncan was the 1124th most popular name for boys in 2025, given to 190 babies. Its best year was 1997, when it ranked 378th with 644 babies. Over the last ten years it has moved down 334 places. More babies were named Duncan in the 1990s than in any other decade.
Meaning Not yet researched how we research meanings
- Rank in 2025
- #1,124 boys, down 142 places since 2020
- Babies in 2025
- 190boys
- Girls and boys
- Almost always a boy’s name2021–2025
- Peak year
- 1997644 babies
- Total since 1880
- 21,230babies recorded
Duncan popularity since 1880
A few girls are given the name too: 11 since 1996.
| Year | Rank (boys) | Babies (boys) |
|---|---|---|
| 2025 | #1,124 | 190 |
| 2020 | #982 | 217 |
| 2010 | #709 | 329 |
| 2000 | #447 | 530 |
| 1990 | #740 | 190 |
| 1980 | #901 | 99 |
| 1970 | #713 | 134 |
| 1960 | #595 | 174 |
| 1950 | #590 | 133 |
| 1940 | #643 | 87 |
| 1930 | #786 | 67 |
| 1920 | #696 | 86 |
| 1910 | #830 | 14 |
| 1900 | #607 | 17 |
| 1890 | #684 | 9 |
| 1880 | #540 | 12 |
How popular is Duncan, counting every spelling?
Duncan has no other common spelling that sounds the same. Counting every name's spellings together, it ranks #1,063 for boys in 2025, against #1,124 on the official list.
How many kids will share the name Duncan?
190 of the 3,606,400 babies born in the US in 2025 were named Duncan (0.05 per 1,000 births). For a boy named Duncan born in 2025, the chance that another child with the same name is in a class of 20 children the same age is under 1 in 50. If every grade liked the name as much as the 2025 babies do, only about one elementary school in 44 (of 430 pupils) would have a child named Duncan.
Shares of all registered births (NCHS); classes assumed to be children born the same year. How we estimate this.
How old are people named Duncan?
About 17,000 people born in the US named Duncan are alive today, with a median age of 28; half are between 17 and 41. That makes Duncan mostly worn by children and young adults.
Babies given the name each year (SSA) times the share of that birth year still alive (SSA life tables). Counts people born in the US only. Method.
Duncan by state
How common Duncan was among boys born in each state in 2021–2025. It is notably more common than nationally in Utah (2.2×), Wisconsin (2.1×), Minnesota (2.1×), Washington (2.0×), Colorado (1.9×). In 23 states fewer than five boys a year got the name, too few for SSA to publish, so those states show as zero.
Names with a similar history
These names rose and fell in step with Duncan: their share of US boys followed the most similar curve since 1880. If you like Duncan, they share its era and feel.
Questions about the name Duncan
How popular is the name Duncan?
Duncan was the 1124th most popular name for boys in 2025, given to 190 babies. Its best year was 1997, when it ranked 378th with 644 babies. Over the last ten years it has moved down 334 places. More babies were named Duncan in the 1990s than in any other decade.
Is Duncan a boy or girl name?
In 2021–2025, almost always a boy’s name given the name Duncan in the US.
Where is Duncan most popular?
In 2021–2025, Duncan was most common in Utah (0.28 per 1,000 boys), followed by Wisconsin and Minnesota.