Baby Name Popularity Profile

Cassidy

Data-driven SSA statistics, rankings, and historical trends for Cassidy.

✦ Curly-haired 🌍 Irish traditional
National Rank (2025) #541
All-Time Peak Rank #99 Achieved 1999
Total U.S. Births 60,848 since 1880
Unisex Distribution 4.7% Boy / 95.3% Girl Overwhelmingly Female
First Recorded 1969 Last seen: 2025
Peak Decade 2000s 3,395 births in 1999
💡 The Cassidy Vibe: Considered a Declining Classic. A previously dominant name currently experiencing a prolonged generational cooling period.

🌍 Meaning & Etymology

Primary Meaning Curly-haired
Language Origin Irish
Origin Type single
Derived from the Irish surname Ó Caiside, meaning 'descendant of Caiside'. Caiside means 'curly-haired'.
Common Nicknames
Cass Cassie Sid
Alternative Spellings
Kassidy Cassidee Kassidee
Pronunciation: KAS-i-dee
Themes & Categories
traditional
Etymology confidence: High

📖 The Story Behind Cassidy

According to SSA data, Cassidy achieved its highest historical rank of #99 in 1999. Its highest annual registration volume occurred in 1999 with 3,395 babies. Between 2015 and 2025, modern registrations have decreased by 54.9%. Overall, the name has maintained a ranked presence for 57 consecutive years.

📊 Factual Timeline & Current Trajectory (1880 – 2025)

Registration footprint of Cassidy across 145 years of SSA data.

5-Year Trajectory Declining
10-Year Shift -54.9% Decline
18801920196020002025

📈 Popularity Milestones & Volatility

Busiest Year on Record 3,395 births in 1999
Years in Top 100 1 yrs
Years in Top 500 38 yrs
Registry Streak 57 yrs
Historical Volatility Highly Volatile
Largest 1-Year Jump N/A
Decade-by-Decade Registration Volumes
1880s: 0
1890s: 0
1900s: 0
1910s: 0
1920s: 0
1930s: 0
1940s: 0
1950s: 0
1960s: 5
1970s: 523
1980s: 3,341
1990s: 20,659
2000s: 21,180
2010s: 11,235
2020s: 3,905

📐 Sound & Spelling Structure

Phonetic Syllables Cas-si-dy
Letter Count 7 letters
Spelling Complexity Moderate
Length Percentile Longer than 54.1% of names
Linguistic Profile: Longer than 54.1% of SSA names. Starts with C, a letter used by only 5.7% of SSA names.

🛠️ Sibling & Surname Cadence Tool

Enter a surname or sibling name to test how it pairs with Cassidy.

📍 Authentic State & Regional Rankings

Highest Ranking State Utah
Top States Utah, Nevada, Colorado, Alaska, Idaho
States with Data 51
State 2025 Rank Total Births Peak Year 5-Yr Velocity
Utah #498 1,142 1996 Insufficient historical volume
Nevada #446 438 1994 Insufficient historical volume
Colorado #321 1,265 1997 Insufficient historical volume
Alaska Unranked 136 1998 Insufficient historical volume
Idaho Unranked 378 1997 Insufficient historical volume
Delaware Unranked 191 1999 Insufficient historical volume
Montana Unranked 282 1999 Insufficient historical volume
Maine Unranked 397 1999 Insufficient historical volume
Oregon Unranked 813 2000 Insufficient historical volume
Florida #875 2,975 1995 47.1% Decline
Arizona #485 1,005 1999 Insufficient historical volume
Washington #595 1,317 1995 Insufficient historical volume
New Hampshire Unranked 255 1999 Insufficient historical volume
Maryland #469 1,098 1999 Insufficient historical volume
Virginia #416 1,652 1999 36.7% Decline
Hawaii Unranked 215 2000 Insufficient historical volume
North Carolina #455 1,973 1999 20.0% Decline
Georgia #533 1,895 1999 30.0% Decline
Wyoming Unranked 88 1995 Insufficient historical volume
Tennessee #657 1,351 1999 Insufficient historical volume
California #481 6,258 1995 +4.5% Growth
Connecticut #482 680 1995 Insufficient historical volume
Oklahoma Unranked 832 1999 Insufficient historical volume
Rhode Island Unranked 223 1999 Insufficient historical volume
Vermont Unranked 105 1999 Insufficient historical volume
South Carolina Unranked 866 1998 Insufficient historical volume
Wisconsin #526 1,172 1999 Insufficient historical volume
South Dakota Unranked 199 1997 Insufficient historical volume
Kansas Unranked 611 1997 Insufficient historical volume
Indiana #740 1,370 1997 Insufficient historical volume
Ohio #537 2,654 1999 45.7% Decline
Michigan #375 2,164 1995 25.8% Decline
New Jersey #353 1,581 2000 28.1% Decline
Pennsylvania #295 3,064 1999 19.6% Decline
Iowa #586 747 2000 Insufficient historical volume
Texas #634 4,238 1995 10.9% Decline
Kentucky Unranked 956 1997 Insufficient historical volume
Nebraska Unranked 401 2001 Insufficient historical volume
Massachusetts #422 1,331 1999 Insufficient historical volume
Arkansas #501 554 1998 Insufficient historical volume
Missouri #653 1,138 1999 Insufficient historical volume
Louisiana #440 881 1999 Insufficient historical volume
North Dakota Unranked 165 1995 Insufficient historical volume
Alabama #489 875 1998 Insufficient historical volume
Minnesota #610 877 1999 Insufficient historical volume
New Mexico Unranked 254 1996 Insufficient historical volume
Illinois #677 2,242 1999 Insufficient historical volume
West Virginia Unranked 390 2000 Insufficient historical volume
Mississippi #541 518 1998 Insufficient historical volume
New York #568 3,057 1999 39.6% Decline
District of Columbia Unranked 53 2010 Insufficient historical volume

👨‍👩‍👧 Sibling Name Suggestions

👦 Brother Suggestions
Armando Roberto Johnathan Ariel Dalton Tanner Morgan Ruben Zachariah Devin
👧 Sister Suggestions
Mariah Alyssa Bianca Alexis Marina Sierra Madeleine Stephanie Imani Tiana

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