Gromadzyn Stary — village in łomżyński powiat Białystok Voivodeship of Polish Republic (Second Rzeczpospolita, 1920-1939).
Information presented on the Radzima.net: 
Administrative affiliation of the village Gromadzyn Stary
— the administrative-territorial units to which the settlement belonged in different historical periods:— Polish Republic (Second Rzeczpospolita, 1920-1939),This information is available for registered users with a Premium plan.
2025-12-10 Brenda Austin