Baby Name Popularity Profile

Cillian

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

✦ Little church 🌍 Irish Traditional
National Rank (2025) #507
All-Time Peak Rank #463 Achieved 2024
Total U.S. Births 4,084 since 1880
Unisex Distribution 99.9% Boy / 0.1% Girl Overwhelmingly Male
Girl Rank (2025) Unranked rare/no Girl usage
First Recorded 1995 Data through: 2025
Peak Decade 2020s 668 births in 2024
💡 The Cillian Vibe: Considered a Rising Star. A high-velocity modern choice demonstrating rapid, sustained growth in recent registries.

🌍 Meaning & Etymology

Primary Meaning Little church
Language Origin Irish
Origin Type single
Derived from Old Irish *Cillín*, a diminutive of *cill* meaning 'church'.
Common Nicknames
Cill Killy
Alternative Spellings
Killian Cilian
Pronunciation: KIL-ee-an
Themes & Categories
Traditional
Etymology confidence: High

📊 Popularity Over Time (1880 – 2025)

Annual registration volume (number of births) for Cillian across 146 years of SSA data.

Historical Timeline (1880 - 2025)
18801920196020002025
Recent Decade (2015 - 2025)
5-Year Trend (2020–2025) +161.0%
10-Year Trend (2015–2025) +391.7%
2015: 121 births 121 2016: 177 births 2017: 170 births 2018: 193 births 2019: 186 births 2020: 228 births 228 2021: 341 births 2022: 353 births 2023: 477 births 2024: 668 births 2025: 595 births 595
2015 2020 2025

📈 Popularity Milestones

Busiest Year on Record 668 births in 2024
Years in Top 100 0 yrs
Years in Top 500 1 yrs
Longest Streak 22 yrs
Decade-by-Decade Registration Volumes
1880s: 0
1890s: 0
1900s: 0
1910s: 0
1920s: 0
1930s: 0
1940s: 0
1950s: 0
1960s: 0
1970s: 0
1980s: 0
1990s: 10
2000s: 208
2010s: 1,204
2020s: 2,662

📐 Sound & Spelling Structure

Phonetic Syllables Cil-li-an
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 Cillian.

👨‍👩‍👧 Sibling Name Suggestions

👦 Brother Suggestions
Azariah Vicente Lachlan Kaysen Isaias Wilder Raiden Apollo Oakley Lucian
👧 Sister Suggestions
Xiomara Jaylani Haisley Arlette Alisson Analeia Marlowe Phoenix Everlee Holland

📍 Authentic State & Regional Rankings

Highest Ranking State Massachusetts
Top States Massachusetts, Alaska, Colorado, Washington, Arizona
States with Data 40
State 2025 Rank Total Births Peak Year 5-Yr Velocity
Massachusetts #310 213 2024 Insufficient historical volume
Alaska #169 10 2024 Insufficient historical volume
Colorado #348 78 2024 Insufficient historical volume
Washington #428 100 2024 Insufficient historical volume
Arizona #646 63 2024 Insufficient historical volume
New York #353 394 2024 +100.0% Growth
Connecticut #391 54 2022 Insufficient historical volume
New Hampshire #240 15 2021 Insufficient historical volume
Florida #587 163 2024 Insufficient historical volume
Virginia #330 107 2025 Insufficient historical volume
Maryland #527 67 2024 Insufficient historical volume
Utah #571 34 2024 Insufficient historical volume
New Jersey #345 114 2021 Insufficient historical volume
Illinois #366 191 2025 Insufficient historical volume
California #510 386 2024 Insufficient historical volume
Pennsylvania #400 195 2024 Insufficient historical volume
North Carolina #433 96 2025 Insufficient historical volume
Oregon #409 30 2025 Insufficient historical volume
Ohio #358 141 2025 Insufficient historical volume
Texas #780 215 2023 Insufficient historical volume
Rhode Island #206 10 2023 Insufficient historical volume
Delaware #214 5 2025 Insufficient historical volume
Tennessee #527 52 2024 Insufficient historical volume
Minnesota #524 43 2024 Insufficient historical volume
Indiana #629 51 2024 Insufficient historical volume
Nevada Unranked 7 2023 Insufficient historical volume
Georgia #929 57 2024 Insufficient historical volume
Oklahoma #513 25 2025 Insufficient historical volume
Kansas #611 17 2024 Insufficient historical volume
Wisconsin #491 31 2024 Insufficient historical volume
Missouri #527 34 2024 Insufficient historical volume
Michigan #784 56 2024 Insufficient historical volume
South Carolina #619 19 2023 Insufficient historical volume
New Mexico #276 7 2025 Insufficient historical volume
Maine Unranked 5 2024 Insufficient historical volume
Louisiana #798 17 2024 Insufficient historical volume
Kentucky Unranked 14 2024 Insufficient historical volume
Iowa Unranked 10 2019 Insufficient historical volume
Alabama Unranked 10 2023 Insufficient historical volume
Mississippi #541 5 2025 Insufficient historical volume

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