How common are twins?
Around 1 in every 42 babies born worldwide is a twin and about 1.6 million twins are born each year.
Twins / Facts
Twin Facts & Statistics
From global birth rates to rare twin types, this page gives a clean foundation for understanding twins.
Twins / Facts
Types of twins
Identical (monozygotic), fraternal (dizygotic), mirror twins, conjoined twins and rare semi-identical twins.
Fun facts
Identical twins have different fingerprints and can even be born on different days or years.
Articles
Start with core twin fact articles
Foundational guides designed for SEO intent and internal discovery.
Identical vs fraternal twins
A clear overview of biological differences, appearance myths and what genetics can and cannot explain.
Read article →How common are twins worldwide?
Global prevalence, changing birth trends and why twin rates can vary between populations.
Read article → Internal Link Matrix