List of Suliformes by population

This is a list of Suliformes species by global population. While numbers are estimates, they have been made by the experts in their fields. For more information on how these estimates were ascertained, see Wikipedia's articles on population biology and population ecology.

Suliformes include the following families: Sulidae (gannets and boobies), Fregatidae (frigatebirds), Phalacrocoracidae (cormorants), Anhingidae (darters), and the Plotopteridae (flightless seabirds of the North Pacific that went extinct in the Miocene).

The IOC World Bird List (version 15.1) recognizes 60 species of Suliformes, one of which is extinct. As of December 2025, IUCN/BirdLife International have assessed 54 of these species (excepting Cocos booby and Imperial shag complex splits), 44 of which have population estimates. This list follows IUCN classifications for species names. Where IUCN classifications differ from other ornithological authorities, alternative names are noted.

Some members included in Suliformes are extinct:

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