Roughly 11.5% of Manchester, New Hampshire residents report Canadian or French-Canadian ancestry, according to census figures covering 2020 to 2024 — and for some of them, that family line may already carry American-Canadian dual citizenship without an application ever being filed.

The number comes from how Americans describe themselves. The census asks residents to self-report their ancestry, and the survey records only each person's first two answers. Anyone who listed Canadian or French-Canadian among those first two responses feeds into the 11.5% figure.

The true share is almost certainly larger.

Why the census likely undercounts Canadian roots

Nearly one in five Manchester residents gave no ancestry answer at all on the census. Those blank responses sit outside the 11.5%.

Others may have listed two different ancestries first — say, Irish and Italian — and left a Canadian grandparent uncounted. Because the form caps the tally at two answers per person, the figure cannot capture every household with a Canadian-born ancestor.

What does this change for Manchester families?

Nothing changes in the law. What changes is the question the data raises: if your family is from Manchester and you carry Canadian or French-Canadian lineage, you may already hold citizenship through your parent or grandparent rather than through naturalization.

Canadian citizenship can pass by descent at birth, depending on when a person was born and which generation separates them from the Canadian-born ancestor. That means a Manchester resident could hold two passports today and not know it.

Who should look at this

The census figures point to a specific group:

• Manchester residents who reported Canadian or French-Canadian ancestry — 11.5% of the city between 2020 and 2024;
• Residents who gave no ancestry answer — nearly 20% of the city — and may simply not know their family history;
• Anyone with a Canadian-born parent or grandparent in their family tree.

Where to verify a claim

This article cannot tell any individual reader whether they hold dual citizenship — that depends on birth dates, parental status and family records specific to each case.

Anyone suspecting Canadian lineage should consult the official Immigration, Refugees and Citizenship Canada (IRCC) guidance on proof of citizenship and citizenship by descent before drawing conclusions. The department's published criteria govern who qualifies, and its application materials spell out the documents — birth certificates, marriage records, naturalization papers — that establish a claim.

For a city where one resident in nine openly claims Canadian roots, and nearly one in five skipped the question entirely, the paper trail may run deeper than the census shows.

*An earlier version of the census analysis noted the ancestry figures are self-reported and limited to each respondent's first two answers.