Saying which country you live in and which language you speak

Spanish

How would a boy say "I am Honduran" in Spanish?

Vivo en Chile. Soy chileno y hablo español.

Vivo en México. Soy méxicana y hablo inglés.

Vivo en México. Soy méxicano y hablo español.

César says: "I live in México. I am Mexican and I speak Spanish." Which is correct?

How do you say "I am 8 years old" in Spanish?

How many Spanish-speaking countries are there in the world?