Sibling names for Foster
Names that sound like they belong in the same family as Foster usually share its era. These sister and brother names rose and fell on a similar curve to Foster, whose busiest decade was the 2010s, and are about as common, so neither child's name will feel dated or unusual next to the other.
Sister names for Foster
| Name | Meaning | Rank 2025 | Babies, last 5 years | Peak decade |
|---|---|---|---|---|
| Mazie | pet form of Margaret ('pearl') | #966 | 1,232 | 1920s |
| Vida | #1,218 | 1,202 | 1920s | |
| Lola | pet form of Dolores ('sorrows') | #275 | 5,881 | 1920s |
| Agatha | #1,703 | 626 | 1910s | |
| Celia | heavenly (Latin Caelia) | #774 | 1,747 | 1910s |
| Winnie | pet form of Winifred (and others) | #475 | 2,613 | 1920s |
| Magdalene | #1,345 | 674 | 1920s | |
| Una | #3,245 | 263 | 1920s | |
| Eulalia | #2,940 | 284 | 1920s | |
| Adela | #1,151 | 1,067 | 2010s |
Brother names for Foster
| Name | Meaning | Rank 2025 | Babies, last 5 years | Peak decade |
|---|---|---|---|---|
| Noble | #1,337 | 750 | 1920s | |
| Crawford | #2,097 | 291 | 1920s | |
| Julius | #424 | 4,382 | 1920s | |
| Oren | #1,184 | 749 | 1920s | |
| Levy | #1,705 | 448 | 2020s | |
| Ruben | see, a son! | #480 | 3,191 | 1990s |
| Emile | #2,098 | 374 | 1920s | |
| Ellis | from Elis, a medieval form of Elijah | #243 | 6,029 | 2010s |
| Mack | #463 | 3,051 | 1940s | |
| Ambrose | immortal, divine (Greek) | #735 | 1,794 | 2020s |
| Valentine | #1,807 | 353 | 1920s |
Foster's era
Foster ranked #901 for boys in 2025, against #1,033 in 2015. Its best year was 1896, at #280. 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, Foster included.
Girls: Elizabeth, Maria, Lydia, Cecilia, Julia, Miriam. Boys: Samuel, Anthony, Wesley, Vincent, Calvin, Victor.
Same era, but close to Foster
These names follow Foster's curve too, but we left them out above because they share a first letter or an ending with Foster. Some parents like that echo; if you do, start here.
- Forrest same first letter as Foster
How these were chosen
Each suggestion's share of US babies has followed a curve close to Foster's since 1880, and its recent number of babies is within about twelve times Foster's, so the names are in the same league. Names starting with the same letter as Foster or with the same ending are left out, so the names go together without matching. Spellings of Foster itself are excluded.