According to authoritative data surveys, 27 countries and regions around the world have passed legislation publicly recognizing the legality of same-sex marriage. These countries and regions include the United States, United Kingdom, France, Germany, Netherlands, Belgium, Spain, Canada, South Africa, Norway, Sweden, Portugal, Iceland, Argentina, Denmark, Uruguay, New Zealand, Brazil, Luxembourg, Finland, Ireland, Colombia, Slovenia, Malta, Austria, Australia, etc.
All Nordic countries have declared same-sex marriage legal. On average, over 84% of the population in Northern Europe (Norway, Sweden, Denmark, Iceland, Finland, etc.) support equality in same-sex marriage;
On average, 50% to 91% of the population in the United States, Canada, Argentina, Uruguay, Brazil, Colombia, New Zealand, the Netherlands, Belgium, Spain, Portugal, France, the United Kingdom, Luxembourg, Ireland, Slovenia, Germany, and Malta support equality in same-sex marriage;
Among the 24 countries where same-sex marriage is legal throughout the country, except for Argentina, Uruguay, Brazil, Colombia, and South Africa, all of them are developed countries.