MallowbyNames

Delta

DEL-tuh · The fourth letter of the Greek alphabet, often used to signify change or a river mouth.

2025 rank (girls)
#2,326
Babies named in 2025
78
Peak popularity
1904
2025 frequency
1 in 20,606 girls
Usually for
Girls
Trend
Declining since 2020

Declining since 2020, #2,326 for girls today.

Popularity of Delta since 1883

Babies named Delta per year in U.S. Social Security records. Raw births topped out in 2019, but relative to how few babies were recorded back then, Delta's real moment was 1904.

4591136192019602000Most births 2019Girls
Data table (by decade)
DecadeGirls
1880s51
1890s131
1900s192
1910s462
1920s488
1930s389
1940s283
1950s298
1960s195
1970s410
1980s184
1990s156
2000s115
2010s460
2020s554

Meaning & origin

Delta is a name drawn from the fourth letter of the Greek alphabet, a symbol of change and new beginnings. In the United States, it first appeared in records in 1883 and was most popular in 1904, when it reached its peak rank. Since then, it has experienced a steady decline, especially since 2020, reflecting a falling trajectory. Despite this, Delta's modern revival has been partly fueled by cultural references and its association with the Delta variant during the pandemic. The name is most popular in Mississippi, Indiana, and Tennessee, and it retains a distinctive, literary feel. As a word name, Delta carries a sense of geography and mathematics, making it a unique choice that stands apart from more common Greek-letter names like Alpha or Omega.

Delta is directly derived from the Greek letter Δ (delta), which itself came from the Phoenician letter dalet. The name was adopted into English in the 19th century as a given name, possibly influenced by the geographical term for a river delta. It enjoyed modest use in the United States in the early 1900s and saw a resurgence in the late 20th century.

Where Delta is most popular

Births per 100,000 girls by state, 2025. The lightest shade means too few recorded births.

Fewermore per 100k girlstoo few births

Nicknames & variants

Nicknames: Dell, Ella

Sibling names for Delta

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

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

D is for Delta, our favorite little girl.

D is for Delta…”

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

Make Delta's book

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

Questions parents ask

What does the name Delta mean?
Delta is a Greek letter meaning the fourth letter of the alphabet, and by extension, a river delta.
How popular is the name Delta?
In 2025, Delta ranked 2326th in the United States, with approximately 1 in 20,606 girls given the name. It peaked in popularity in 1904.
Is Delta a boy or girl name?
Delta is primarily used as a girl's name in the United States, though it has been used for both genders.