MallowbyNames

Sierrah

see-AIR-uh · Of uncertain origin; likely a respelling of Sierra influenced by names like Sarah or Ciara.

2025 rank (girls)
#14,942
Babies named in 2025
5
Peak popularity
2001
2025 frequency
1 in 321,453 girls
Usually for
Girls
Trend
Declining since 2001

Declining since 2001, #14,942 for girls today.

Popularity of Sierrah since 1986

Babies named Sierrah per year in U.S. Social Security records.

2754811990200020102020Most births 2001Girls
Data table (by decade)
DecadeGirls
1980s44
1990s449
2000s521
2010s120
2020s16

Meaning & origin

Sierrah is a modern respelling that entered U.S. birth records in 1986, placing it among the newer wave of creative name variants. Its peak came in 2001, when it reached its highest rank. Since then, its trajectory has been steadily falling, reflecting a broader shift away from invented spellings of established names like Sierra. Sierrah's debut coincided with the rise of elaborate respellings in the late 20th century, though it never became common enough to appear in any state's top names lists. Parents drawn to Sierrah typically appreciate the familiar, nature-inspired sound of Sierra but want a distinctive spelling that sets their child apart.

Sierrah is a modern coinage that first appeared in the United States in the late 1980s. It respells the name Sierra, which is the Spanish word for 'mountain range,' probably under the influence of names such as Sarah or the Irish Ciara. The variant Sierrah has never reached high popularity, appearing modestly during the early 2000s before declining.

Sierrah” around the world

Where Sierrah lands in the latest official birth statistics abroad, matched to the U.S. spelling.

  • France

    15

    babies in 2024

Sources: INSEE (France).

Nicknames & variants

Nicknames: Sierra, Sia, Cici

Variants: Sierra, Siera, Sierrah

Sibling names for Sierrah

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

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

S is for Sierrah, our favorite little girl.

S is for Sierrah…”

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

Make Sierrah's book

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

Questions parents ask

What does the name Sierrah mean?
The meaning of Sierrah is uncertain. It is a modern respelling of Sierra, which is Spanish for 'mountain range,' but may also draw from the Hebrew name Sarah or the Irish name Ciara.
Is Sierrah a popular name?
Sierrah is not a highly popular name. In its most recent year (2025), it ranked 14,942 in the United States with approximately 1 in 321,453 newborns given the name.
Is Sierrah a boy's or girl's name?
Sierrah is used almost exclusively for girls, though it has occasionally been given to boys.