Chicago has the largest Polish community of any American metro, big enough that it runs its own dating ecosystem: dedicated platforms, its own festivals, and neighborhoods where Polish is a first language. Here's the whole scene, honestly.
The numbers make the case: metro Chicago has the largest Polish-American population in the country, at close to a million people claiming Polish ancestry, layered across four generations. The community's geography moved northwest over the decades: from the historic Polish Downtown along Milwaukee Avenue out through Avondale, Portage Park, Jefferson Park, and Norwood Park, and into the near-northwest suburbs (Norridge, Harwood Heights, and beyond), with a southwest-side branch around Archer Heights. For dating, the practical meaning is simple: this is the one American city where "Polish dating" is a mainstream local category, with enough people to support dedicated platforms, dedicated events, and a real question of whether you want to date within the community, and no other city comes close.
PolishHearts is the big one: the largest Polish dating site in the US, with a Chicago pool deep enough that the site maintains dedicated Chicago pages. Profiles run bilingual (plenty are Polish-first), the pool spans recent arrivals to third-generation, and it's free to join with paid upgrades. Sympatia, Poland's own major dating site, carries the Poland-based and recently-arrived end: if your Polish is fluent and your frame of reference is Warsaw rather than Jefferson Park, that's where that pool lives. SinglePolish and the smaller diaspora sites fill out the tail with smaller pools. The honest read: if dating within the community matters to you, PolishHearts is the real answer in Chicago, and it's worth running alongside a mainstream app rather than instead of one.

An honest note on how this actually plays: for some Chicago Poles, dating within the community is a priority (language, faith, family expectations, and the practical fact that your families will already understand each other); for others, it's irrelevant. Both are normal here, and the scene supports both: the dedicated platforms and community events for the first group, and for the second, the mainstream pool covered in the dating sites comparison and apps guide, where Polish surnames are simply part of the city's texture.
The Chicago pool, sorted by distance from you, intent stated up front, free to join and browse.
Browse Local Profiles FreeZoom out: the complete Chicago singles guide covers the citywide scene.