Sibling names for Jillian
Names that sound like they belong in the same family as Jillian usually share its era. These sister and brother names rose and fell on a similar curve to Jillian, whose busiest decade was the 1980s, and are about as common, so neither child's name will feel dated or unusual next to the other.
Sister names for Jillian
| Name | Meaning | Rank 2025 | Babies, last 5 years | Peak decade |
|---|---|---|---|---|
| Taryn | #3,449 | 367 | 1990s | |
| Lauren | laurel (from Laurence) | #401 | 4,515 | 1990s |
| Kacie | #1,868 | 484 | 1990s | |
| Abby | pet form of Abigail, 'my father's joy' | #731 | 2,366 | 2000s |
| Alyssa | #453 | 4,805 | 1990s | |
| Carissa | #3,349 | 269 | 1990s | |
| Shayla | #1,793 | 655 | 2000s | |
| Rocio | #3,377 | 332 | 1990s | |
| Bethany | #752 | 2,050 | 1980s | |
| Rebecca | #350 | 4,901 | 1970s | |
| Lindsey | island of Lincoln (place name) | #1,369 | 896 | 1980s |
Brother names for Jillian
Jillian's era
Jillian ranked #1,266 for girls in 2025, against #440 in 2015. Its best year was 1982, at #96. Names that rose and fell with it share its period feel, which keeps the set consistent.
Timeless names that go with any sibling
These names have been used steadily for a hundred years, so they sit comfortably next to a name from any era, Jillian included.
Girls: Elizabeth, Maria, Lydia, Cecilia, Miriam, Nina. Boys: Samuel, Anthony, Wesley, Vincent, Calvin, Victor.
Same era, but close to Jillian
These names follow Jillian's curve too, but we left them out above because they share a first letter or an ending with Jillian. Some parents like that echo; if you do, start here.
How these were chosen
Each suggestion's share of US babies has followed a curve close to Jillian's since 1880, and its recent number of babies is within about twelve times Jillian's, so the names are in the same league. Names starting with the same letter as Jillian or with the same ending are left out, so the names go together without matching. Spellings of Jillian itself are excluded.