Name Trends

See the popularity of first names over time in the USA

How popular is “Cillian” in the USA?

Number of people named “Cillian” by birth year

This chart shows how many people named “Cillian” were born each year.

Due to changes to population growth and data collection rates over time, this isn't a good chart for understanding popularity.

Popularity of “Cillian” by birth year

This chart shows how the popularity of “Cillian” has changed over time.

Popularity is the number of people named “Cillian” born in that year divided by the total number of births for that year.

Bias in sex for “Cillian” by birth year

This chart shows how “Cillian” has been used as gendered name over time. The scale ranges from 1 (only females) to -1 (only males).

Sex is a required field in SSA's Social Security Card applications (only 2 options). Most applications are filed around a person's time of birth.

The raw data

This table shows the data used in the above charts.

Year Count Proportion Females Males Bias toward female
1995 5 0.000001365 5 -100%
1999 5 0.000001354 5 -100%
2001 6 0.000001603 6 -100%
2004 8 0.000002094 8 -100%
2005 10 0.000002601 10 -100%
2006 42 0.000010616 42 -100%
2007 39 0.000009756 39 -100%
2008 51 0.000012975 51 -100%
2009 52 0.000013612 52 -100%
2010 54 0.000014611 54 -100%
2011 66 0.000018044 66 -100%
2012 73 0.00001996 73 -100%
2013 77 0.000021121 77 -100%
2014 87 0.000023473 87 -100%
2015 121 0.000032695 121 -100%
2016 177 0.000048246 177 -100%
2017 170 0.000047537 170 -100%
2018 193 0.000054894 193 -100%
2019 186 0.000053588 186 -100%
2020 228 0.000068252 228 -100%
2021 340 0.000100356 340 -100%
2022 352 0.000104046 352 -100%
2023 476 0.000143755 476 -100%
2024 674 0.000202494 6 668 -98%

Explore other names

These names are alphabetically near to Cillian:

  1. Ciley
  2. Cilia
  3. Cilian
  4. Cilicia
  5. Cilla
  6. Cillian (this page)
  7. Cilton
  8. Cimani
  9. Cimara
  10. Cimarron
  11. Cimberly