Casidy Girl

Popularity: · Trend: ↘ Falling

Name Meaning & Origin Pronunciation: KAS-i-dee //ˈkæs.ɪ.di//

Origin: Irish; English

Meaning: Irish: Descendant of Caiside; English: Variant of Cassidy

Historical & Cultural Background

The name Casidy is derived from the Irish surname "Ó Caiside," which means "descendant of Caiside." The root "Caiside" itself is believed to be derived from the Gaelic word "caiside," meaning "curly-haired." This name was historically associated with a notable family in Ireland, particularly in the province of Ulster. As the surname evolved, it underwent various anglicizations, including Cassidy, which became more common in English-speaking contexts.

The transition from a surname to a given name occurred in the 20th century, reflecting a broader trend of using surnames as first names in English-speaking cultures. Historically, the name Cassidy has been linked to several notable figures, particularly in Irish history.

The Ó Caiside clan was prominent in medieval Ireland, and members of this family were often involved in local governance and military affairs. The name gained further recognition through its inclusion in various literary works and folklore, where characters bearing the name often embodied qualities of resilience and strength.

The name's presence in Irish mythology and its association with the Gaelic language contributed to its cultural significance. In addition to its historical roots, the name Casidy carries a sense of connection to Irish heritage and identity.

It resonates with themes of lineage and ancestry, reflecting the importance of family ties in Irish culture. The name has also been embraced in various forms, with diminutives like Cassie emerging as affectionate alternatives.

Overall, Casidy encapsulates a blend of linguistic heritage and cultural resonance, making it a name with deep historical roots.

Sibling suggestions

If you're looking for sibling name ideas that pair well with Casidy, the following options are frequently chosen as complementary choices by parents.

Similar names

Based on our extensive baby names database, several names share stylistic or phonetic similarities with Casidy. These names can serve as alternatives to the sibling suggestions listed above and may help you find the perfect complementary name for your growing family.

U.S. Historical Usage

The name Casidy was first seen in the United States in 1980.

Casidy has ranked as high as #1273 nationally, which occurred in 2001, and has been most popular in .

In the past 5 years the name Casidy has been trending down compared to the previous 5 years.

Popularity Over Time (National)

The name Casidy is part of our comprehensive baby names database, which includes Social Security Administration (SSA) data dating back to 1880—the first official year of state and national tracking. The chart below shows when Casidy was first recorded in the United States and illustrates how its popularity has risen and fallen over time.

Top States for Casidy

We track the most popular states for each baby name every year and highlight the locations where the name appears most frequently. In some cases, you may see four or five states listed. However, we only display states where the name represents a significant percentage of births, so the number of states shown can range from one to several.

No state data available for this year.

Popularity Over Time (National) — Table

We track the national popularity of each baby name annually. The table below displays each year along with the number of births reported by the Social Security Administration. This data combines all state-level reporting from the SSA's baby names database to provide a comprehensive view of overall birth counts for Casidy.

YearBirths
20167
20145
20138
201210
201110
201011
20095
200812
20077
200611
200516
200412
200314
200222
200126
200020
199920
199810
199721
199616
199515
199413
19935
19928
19908
19895
19886
19867
19856
19835
19805