• 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.

The following names have similar spellings or pronunciations as CALAHAN.

This does not necessarily imply a direct relationship between the names, but may indicate names that could be mistaken for this one when written down or misheard.

The most likely matches are shown first.

CALLAHAN
CALLAHAM
CALLIHAN
COOLAHAN
CALIMAN
CALHAUN
CALNAN
CALLAN
CALLANAN
CALLNAN
CAHALAN
CLAMAN
COLLEEN
COLINA
COLLEN
COLLIN
COLLINI
COLOMY
COLOMA
COLOM
COLN
COLMAN
COLLUM
COLLON
COLLOM
COLLMAN
COLIN
COLEMON
COLIAN
CLUM
CLUNE
CLYMAN
CLYNE
COCKLIN
COGHLAN
COGLIANO
COHLMIA
COLAIANNI
COLAN
COLEMAN
COLEMEN
CLUNIE
COLEN
CLOWNEY
COLON
COLONA
CULLOM
CULLUM
CULNANE
GALLAHAN

Matches are generated automatically by a combination of Soundex, Metaphone and Levenshtein matching.

The following words are slight variants of CALAHAN that are likely to be possible typos or misspellings in written material.

CALAAHN CLAAHAN CAALHAN ACLAHAN CALAHA CALAHAA CALAHANA CALAHANE CALAHANI CALAHANO