The exact number of mosquitoes in the world is impossible to calculate, but according to the most authoritative estimates of experts, their total population may range from 110 trillion to several quadrillion individuals. Species Diversity and Geography There are approximately 3,700 species of mosquitoes in the world. They are found almost everywhere, except for two places on Earth — Iceland and Antarctica. The greatest number of species has been recorded in regions with a warm and humid climate: Brazil — 447 species. Indonesia — 439 species. Malaysia — 415 species. Thailand — 379 species. India — 338 species. Russia — 112 species. Difficulties in Counting According to scientists, there may be up to 16,000 mosquitoes for each person on the planet. However, any estimates remain approximate, as mosquitoes have a short lifespan, reproduce quickly, and are widespread in inaccessible regions for counting.