The majority of respondents answered the 2021 census online. However, other forms of response were possible, namely paper questionnaire and by telephone.
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Resident population in Portugal 2021, by region and religion
The 2021 census showed that, out of almost 8.8 million residents in Portugal aged 15 years and more, over seven million were catholic. The second most representative religious group in the country was protestant, a community with almost 187 thousand members. Islam accounted for almost 36.5 thousand believers, while Judaism for just 2.9 thousand. Those without religion totaled 1.2 million residents.
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Statistics Portugal. (November 23, 2022). Number of residents in Portugal in 2021, by region and religion (in 1,000s) [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 31, 2026, from /statistics/1422742/portugal-population-by-region-and-religion/
Statistics Portugal. "Number of residents in Portugal in 2021, by region and religion (in 1,000s)." Chart. November 23, 2022. ÌÇÐÄÆƽâ°æ. Accessed July 31, 2026. /statistics/1422742/portugal-population-by-region-and-religion/
Statistics Portugal. (2022). Number of residents in Portugal in 2021, by region and religion (in 1,000s). ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 31, 2026. /statistics/1422742/portugal-population-by-region-and-religion/
Statistics Portugal. "Number of Residents in Portugal in 2021, by Region and Religion (in 1,000s)." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 23 Nov 2022, /statistics/1422742/portugal-population-by-region-and-religion/
Statistics Portugal, Number of residents in Portugal in 2021, by region and religion (in 1,000s) ÌÇÐÄÆƽâ°æ, /statistics/1422742/portugal-population-by-region-and-religion/ (last visited July 31, 2026)
Number of residents in Portugal in 2021, by region and religion (in 1,000s) [Graph], Statistics Portugal, November 23, 2022. [Online]. Available: /statistics/1422742/portugal-population-by-region-and-religion/
