Religion statistics

Portugal, 2021 census
Portugal: 10,343,066

Catholicism: 7,043,016
Protestantism: 186,832
Jehovah's Witnesses: 63,609
Orthodoxy: 60,381
Other Christian: 90,948
Islam: 36,480
Hinduism: 19,471
Buddhism: 16,757
Judaism: 2,910
Other Religion: 24,366
No Religion: 1,237,130
Unknown: 1,561,166

Source: https://tabulador.ine.pt/indicador/?id=0011644&lang=EN

Slovakia, 2021 census
Slovakia: 5,449,270

Catholicism: 3,038,511
Evangelical Church: 286,907
Greek Catholicism: 218,235
Other Christian: 203,905
Buddhism: 6,722
Paganism: 4,007
Islam: 3,862
Judaism: 2,007
Hinduism: 975
Other Religion: 34,150
No Religion: 1,296,142
Unknown: 353,797

Source: http://pop-stat.mashke.org/slovakia-religion2021.htm

Bulgaria, 2021 census
Bulgaria: 6,519,789

Christianity: 4,219,270
Islam: 638,708
Judaism: 1,736
No Religion: 305,102
Undeclared: 731,841
Unknown: 616,681

Source: https://infostat.nsi.bg/infostat/pag...t.jsf?x_2=2001