Israeli-US Dual Citizens
Estimates range from 150,000 to 300,000, with most sources converging around 200,000. This includes those living in the US, Israel, or elsewhere.
Italian-US Dual Citizens
There is no official count, but millions of Americans are eligible for Italian citizenship through ancestry. As of 2025, over 44,000 US citizens applied for an Irish passport (as a point of comparison for EU citizenship interest), and the number of Italian-US dual citizens is likely in the hundreds of thousands, given the large Italian-American community and the popularity of citizenship by descent.
Irish-US Dual Citizens
An estimated 1 million US citizens hold dual Irish citizenship, with a surge in applications in recent years. The Irish-American community is vast, with about 31.5 million Americans of Irish descent, many of whom are eligible for Irish citizenship.
Mexican-US Dual Citizens
Over 40 million Americans are estimated to be eligible for dual citizenship, with a significant portion being Mexican-Americans. While exact numbers are not tracked, the US-Mexico dual citizen population is likely in the millions, given the large Mexican immigrant population and the ease of dual citizenship between the two countries.
Canadian-US Dual Citizens
There is no official count, but hundreds of thousands of Canadians live in the US and hold dual citizenship, and many Americans living in Canada also hold dual citizenship. The number is likely in the hundreds of thousands, given the close ties and ease of dual citizenship between the two countries.