Where Does The Last Name O'Callagham Come From? ^{nationality or country of origin}

O'Callagham is found most frequently in England. It may appear as a variant:. Click here for further possible spellings of this last name.

How Common Is The Last Name O'Callagham? ^{popularity and diffusion}

The surname is the 7,117,718^th most frequently held surname at a global level, borne by approximately 1 in 1,041,077,988 people. The surname is predominantly found in Europe, where 57 percent of O'Callagham live; 57 percent live in Northern Europe and 57 percent live in British Isles.

This last name is most frequent in England, where it is carried by 3 people, or 1 in 18,572,686. In England O'Callagham is most common in: Greater London, where 67 percent are found and Isle of Wight, where 33 percent are found. Excluding England this last name exists in 3 countries. It is also common in The United States, where 43 percent are found and Ireland, where 14 percent are found.

O'Callagham Family Population Trend ^{historical fluctuation}

The occurrence of O'Callagham has changed over time. In England the number of people bearing the O'Callagham last name decreased 67 percent between 1881 and 2014 and in The United States it rose 300 percent between 1880 and 2014.