MallowbyNames

Sister

SIS-ter · A familial term meaning a female sibling, sometimes used as a given name especially in religious contexts or as a term of endearment.

Peak popularity
1891
Usually for
Girls
Trend
Holding steady

Holding steady.

Popularity of Sister since 1883

Babies named Sister per year in U.S. Social Security records. Raw births topped out in 1914, but relative to how few babies were recorded back then, Sister's real moment was 1891.

71421192019602000Most births 1914Girls
Data table (by decade)
DecadeGirls
1880s31
1890s104
1900s115
1910s160
1920s57
1930s55
1940s41
1950s0
1960s0
1970s0
1980s0
1990s0
2000s0
2010s0
2020s0

Meaning & origin

Sister is an uncommon English word name that historically saw modest use in the late 19th century, with its peak year recorded as 1891. Although it has never ranked among the top 1000 names, its usage has remained stable over time, reflecting its status as a familial term rather than a conventional given name. The name's one-in-N ratio is unavailable due to low frequency, and no top states have recorded notable occurrences. As a term of endearment, Sister carries a warm, affectionate quality for those seeking a meaningful or religiously inspired name, but it remains outside mainstream naming trends.

Sister is directly derived from the Old English 'sweostor', meaning a female sibling. Its use as a personal name is rare and unconventional, typically appearing in religious orders (e.g., Sister Mary) or as a nickname rather than a formal given name. Historical records from the U.S. Social Security Administration show sporadic use as a first name in the late 19th century, likely due to its affectionate or familial appeal.

Sibling names for Sister

Names that share Sister's style, for a brother or sister.

A parent animal hugging its little one, the personalized name page

S is for Sister, our favorite little girl.

S is for Sister…”

In a Mallowby alphabet book, Sister's letter becomes Sister's page: hand-illustrated, printed hardcover or paperback, made just for them.

Make Sister's book

Books for siblings or grandkids? The second book is 15% off.

Questions parents ask

What does the name Sister mean?
Sister means 'female sibling' in English, derived from Old English 'sweostor'.
How popular is the name Sister currently?
The name Sister has not ranked in the U.S. top 1000 since the Social Security Administration began tracking; it peaked in 1891.
Is Sister a boy or girl name?
Sister is almost exclusively used as a girl's name, reflecting its meaning.