View the most religious surnames in Ireland

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

The surname Hannessy is found in The United States more than any other country or territory. It can be found as:. For other possible spellings of this name click here.

How Common Is The Last Name Hannessy? ^{popularity and diffusion}

The last name Hannessy is the 10,311,814^th most commonly used family name globally, held by around 1 in 2,147,483,647 people. The surname is primarily found in The Americas, where 67 percent of Hannessy live; 67 percent live in North America and 67 percent live in Anglo-North America. It is also the 5,493,085^th most widespread first name internationally. It is borne by 5 people.

Hannessy is most commonly occurring in The United States, where it is borne by 2 people, or 1 in 181,229,466. In The United States it is most numerous in: California, where 100 percent are found. Other than The United States this surname is found in one country. It is also common in Australia, where 33 percent are found.

Hannessy Family Population Trend ^{historical fluctuation}

The frequency of Hannessy has changed through the years. In The United States the share of the population with the surname declined 87 percent between 1880 and 2014.

Hannessy Last Name Statistics ^demography

The religious devotion of those holding the surname is primarily Catholic (100%) in Ireland.