Platform data from Citizenship.EU reveals the European ancestry citizenship pathways that draw the most American interest—and the eligibility results that complicate the picture.
European citizenship by descent has become one of the most discussed topics among Americans exploring life abroad. Driven by political uncertainty, remote work flexibility, and a broader rethinking of what it means to have options, thousands of Americans are researching whether their European ancestry might open a door to dual citizenship.
At Citizenship.EU, we have a unique vantage point on this trend. Our platform serves as both an information resource and an eligibility assessment tool for ancestry citizenship across 22 European countries. That means we can see not only which countries Americans are researching, but—through our eligibility assessment tool—where they actually stand in terms of qualifying.
The two pictures don’t match. And the gap between them may be the most important thing Americans exploring this space should understand.
Where American Interest Is Concentrated
Between October 2025 and March 2026, more than 22,000 U.S.-based visitors explored country-specific ancestry citizenship pages on Citizenship.EU. The ranking of countries by unique American visitors largely mirrors what you’d expect based on the size and visibility of European diasporas in the United States.
Ireland and Italy dominate, each drawing more than 2,000 unique American visitors. This isn’t surprising: the Irish-American and Italian-American communities are among the largest and most culturally visible ancestry groups in the country. Germany follows at third, consistent with the fact that German-Americans are the single largest self-reported ancestry group in the United States.
Below the top three, a tightly packed middle tier emerges. Hungary, Spain, Romania, Luxembourg, Austria, and Poland all drew between 1,200 and 1,500 unique visitors—substantial interest that reflects both diaspora communities and, in several cases, recent changes to nationality law that have put these countries in the spotlight.
Italy’s traffic, in particular, was heavily shaped by current events. The passage of Law 74/2025, which significantly tightened Italy’s citizenship-by-descent rules, drove a wave of interest from Americans trying to understand what the reform means for their eligibility. Several of Italy’s most-visited pages were explainers about the new law and its ongoing constitutional challenges.
Luxembourg’s presence in the top tier reflects the December 31, 2025 deadline for its ancestry reclamation program—a hard cutoff that created urgency among eligible Americans.
The countries Americans are most drawn to are not, by and large, the countries where they’re most likely to qualify.
Where Americans Can Actually Qualify
Interest is one thing. Eligibility is another.
Since November 2025, Citizenship.EU has offered an eligibility assessment tool that allows users to submit their ancestors’ details for a preliminary evaluation. In the tool’s first months of operation, 347 unique users submitted 833 individual ancestor assessments, giving us a first look at where Americans actually stand.
Across all countries, fewer than one in five ancestors assessed came back as “Likely Eligible.” Another third were “Possibly Eligible”—cases that may require further documentation or legal analysis. And nearly half were assessed as “Not Likely Eligible.”
But those averages mask dramatic variation by country.
Eligibility assessment outcomes by country
Countries Americans may be overlooking
Greece is the most striking case. Of 23 ancestors assessed for Greek citizenship by descent, 21 came back “Likely Eligible”—a 91% rate that dwarfs every other country with meaningful sample size. Yet Greece ranks just 18th in visitor interest. Greek-Americans represent a significant diaspora, but awareness of this ancestry pathway appears to lag well behind its accessibility.
Slovenia tells a similar story: 78% of ancestors assessed were likely eligible. Latvia posted a 53% likely-eligible rate, Croatia 67%, and Slovakia 61%. These are not the countries that dominate the American conversation about European dual citizenship, but they may be the countries where Americans have the most realistic path forward.
The high-interest, low-eligibility countries
The flip side is sobering. Italy, the second most-visited country on the platform, saw just 8% of assessed ancestors come back “Likely Eligible.” A majority were assessed as “Not Likely.” Italy’s 2025 reform has generated enormous interest—and significant anxiety—but the eligibility data suggests that for many Americans, the pathway has narrowed considerably. The large “Possibly Eligible” cohort (24 of 63 assessments) likely reflects the legal uncertainty the reform has introduced.
Germany, the most-assessed country by a wide margin with 120 ancestor evaluations, also returned just 8% likely eligible. Its massive “Possibly” pile of 53 reflects the complexity of German nationality law, where outcomes often hinge on specific historical circumstances that require case-by-case legal analysis.
Poland presents a particularly notable pattern: 64 ancestors assessed, but only one came back “Likely Eligible.” However, 42 fell into “Possibly Eligible”—suggesting that Polish ancestry citizenship is theoretically accessible to many Americans but difficult to confirm without extensive genealogical documentation.
Spain (85% not likely eligible) and France (81%) show similar patterns of high interest meeting a high eligibility bar.
The sweet spot
A handful of countries combine genuine American interest with promising eligibility rates. The Czech Republic had 48 assessments with an 83% combined positive rate. Luxembourg, Hungary, and Lithuania all posted positive rates near or above 70%. These are countries where Americans are already looking and where the data suggests many may realistically qualify.