You can submit the application at the territorially competent Polish consular office.
If you intend to get married in a third country, we suggest that you use the possibility of obtaining (and not issuing by a consul) a certificate from the Polish registry office. The certificate issued by the consul cannot be legalized. On the other hand, the certificate issued by the head of the registry office may be subject to legalization . Therefore, if an official in the country where the marriage is to be concluded requires a legalized certificate, it should be issued by the head of the registry office, and not by a consul.