View the most partisan surnames in The United States

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

The surname Cosnahan occurs in The United States more than any other country or territory. It can be rendered in the variant forms:. Click here to see other possible spellings of this last name.

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

Cosnahan is the 1,465,390^th most frequent surname internationally, held by around 1 in 50,258,937 people. Cosnahan is predominantly found in The Americas, where 94 percent of Cosnahan live; 94 percent live in North America and 94 percent live in Anglo-North America.

This last name is most common in The United States, where it is carried by 137 people, or 1 in 2,645,686. In The United States it is primarily concentrated in: Georgia, where 48 percent live, South Carolina, where 9 percent live and Florida, where 7 percent live. Apart from The United States it is found in 2 countries. It is also common in England, where 5 percent live and New Zealand, where 1 percent live.

Cosnahan Family Population Trend ^{historical fluctuation}

The occurrence of Cosnahan has changed through the years. In The United States the number of people who held the Cosnahan surname increased 1,522 percent between 1880 and 2014 and in England it increased 117 percent between 1881 and 2014.

Cosnahan Last Name Statistics ^demography

In The United States those holding the Cosnahan surname are 42.97% more likely to be registered Republicans than the national average, with 89.74% registered with the political party.

Cosnahan earn somewhat less than the average income. In United States they earn 9.43% less than the national average, earning $39,078 USD per year.