Population of the Spanish speaking countries (+ Puerto Rico) in 2011 Significant minority language Though not an official language at the national level, Spanish is regularly spoken by significant minority populations in each of the nations and territories noted below. read more
Because there are a lot of Spanish speaking countries, and they are (historically) largely Catholic, and the Catholic Church encourages large families. So, lots of people speaking Spanish, lots of them having large families, means more people speaking Spanish. BY THE WAY, español is never spelled with a capital letter. read more