A large majority of the Polish population is Roman Catholic. More than 40% of Poles attend church regularly. You can find also some other churches in Tricity

Baptist Christian Church,   Gdansk, Dabrowskiego 11

Eastern-Ortodox Church, Gdansk -Wrzeszcz, Tragutta 45

Muslim Mosque,  Gdansk-Oliwa, Abrahama 17a

Lutheran-Evangelical Church, Sopot, Kosciuszki 51 

Seventh Day Adwentist Church,                Gdansk-Wrzeszcz, Jaskowa Dolina 21  

Mormons Swedish Salor's House, Gdynia, Jana z Kolna 25

Whitsuntide Church,  Gdansk,              Jana Pawla II  7