• 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 SISSAC.

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.

SESSA
SISKA
SISCA
SISSMAN
SISSOM
SISSON
SISTA
SIGG
SIU
SIWEK
SIWICKI
SIWIEC
SISSEL
SISSAC
SISKO
SIKES
SIOK
SIS
SISCHO
SISCO
SISE
SISK
SISKE
SISKEY
SIWIK
SIX
SKYE
SKYES
SO
SOCCI
SOCHA
SOCHOCKI
SOCIA
SOCKEY
SOCKS
SOGA
SKUSE
SKOW
SKOOG
SKAGGS
SKAY
SKEA
SKEES
SKEESICK
SKEWIS
SKJEI
SKOG
SKOK
SKOKOWSKI
SOGGE

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

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

SISASC SSISAC ISSSAC SISSA SISSAA SISSACA SISSACE SISSACI SISSACO