Surname statistics for Cassidy

There are approximately 15,529 people named Cassidy in the UK. That makes it the 642nd most common surname overall. Out of every million people in the UK, approximately 246 are named Cassidy.

Frequency Comparisons
TotalRankFrequency %Per million people
Great Britain
United Kingdom (current)15529642N/A246
United Kingdom (1881 census)366112420.012122
Change since 1881+11868+600+0.013+124
Other Countries
United States260111240N/A96


People with the surname Cassidy are about as likely to be politicians as the average member of the population. When they do become politicians, they are most likely to be elected as Labour.

As of the most recent set of elections, the political parties represented by politicians called Cassidy are:

  1. Labour (5)
More stats for the politics nerds!

Top male forenames

John Cassidy
Michael Cassidy
James Cassidy
David Cassidy
Paul Cassidy
Peter Cassidy
Stephen Cassidy
Patrick Cassidy
Mark Cassidy
Thomas Cassidy
Brian Cassidy
Anthony Cassidy
Martin Cassidy
Joseph Cassidy
Philip Cassidy
Richard Cassidy
Daniel Cassidy
Andrew Cassidy
Sean Cassidy
Robert Cassidy

Top female forenames

Margaret Cassidy
Sharon Cassidy
Anne Cassidy
Susan Cassidy
Joanne Cassidy
Mary Cassidy
Andrea Cassidy
Elizabeth Cassidy
Catherine Cassidy
Jacqueline Cassidy
Lisa Cassidy
Angela Cassidy
Helen Cassidy
Amanda Cassidy
Sarah Cassidy
Barbara Cassidy
Nicola Cassidy
Julie Cassidy
Emma Cassidy
Jennifer Cassidy


  • Total is the total number of people with that surname.
  • Rank is the position in the list of names ordered by total (eg, a rank of 1 means that it's the most common name, and a rank of 10 means it's the tenth most common, etc).
  • Frequency is the percentage of people with that surname.
  • Per million people is the number of people with that surname per million of the population.

All of these are approximate figures, and the current figures especially so. The 1881 census figures are correct for what was recorded on the census, but we don't really know how accurate it was. At least, though the 1881 figures won't change, as it's a snapshot of a point in time. The current figures, by contrast, are variable according to births, deaths, migration and marriages, so the values shown here are only a best approximation to whatever was the case when the underlying data was collated and will not be the same as whatever the values are right now.

'N/A' indicates that we don't have data for this name in that country or time (usually because it's quite uncommon there and our stats don't go down that far). It doesn't mean that there's no-one there with that name at all!

For less common surnames, the figures get progressively less reliable the fewer holders of that name there are. This data is aggregated from several public lists, and some stats are interpolated from known values. The margin of error is well over 100% at the rarest end of the table!

It's possible for a surname to gain in rank and/or total while being less common per million people (or vice versa) as there are now more surnames in the UK as a result of immigration. In mathematical terms, the tail has got longer, with a far larger number of less common surnames.