Surname statistics for Reilly

There are approximately 20,170 people named Reilly in the UK. That makes it the 498th most common surname overall. Out of every million people in the UK, approximately 319 are named Reilly.

Frequency Comparisons
TotalRankFrequency %Per million people
Great Britain
United Kingdom (current)20170498N/A319
United Kingdom (1881 census)317914180.011106
Change since 1881+16991+920+0.021+213
Other Countries
United States40310780N/A149


People with the surname Reilly are less likely to be politicians than the average member of the population. When they do become politicians, they are most likely to be elected as Conservative.

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

  1. Conservative (2)
  2. SNP (1)
More stats for the politics nerds!

Top male forenames

John Reilly
Michael Reilly
James Reilly
Paul Reilly
David Reilly
Mark Reilly
Stephen Reilly
Peter Reilly
Kevin Reilly
Christopher Reilly
Sean Reilly
Patrick Reilly
Anthony Reilly
William Reilly
Thomas Reilly
Martin Reilly
Andrew Reilly
Joseph Reilly
Robert Reilly
Brian Reilly

Top female forenames

Mary Reilly
Susan Reilly
Margaret Reilly
Elizabeth Reilly
Patricia Reilly
Angela Reilly
Sarah Reilly
Catherine Reilly
Christine Reilly
Karen Reilly
Jacqueline Reilly
Helen Reilly
Alison Reilly
Elaine Reilly
Julie Reilly
Michelle Reilly
Anne Reilly
Nicola Reilly
Joanne Reilly
Barbara Reilly


  • 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.