)Notably, Yrjö Väisälä discovered the periodic comets 40P/Väisälä and 139P/Väisälä-Oterma (the latter was co-discovered with Liisi Oterma and at first classified as asteroid 1939 TN).
Kronist Evlija Chelebi, ki je mesto obiskal leta 1662, je zapisal, da imajo Kočani 600 gospodinjstev, mošejo, mezjid, gostilno in 15 trgovin.