There are five islands, two of which are inhabited: St. George and St. Paul. The area is home to the largest seabird population in the Northern Hemisphere. An estimated 2.5 million seabirds nest on the cliffs of St. George; 210 species have been identified. In addition, more than one million fur seals congregate on the islands every summer. There are 14 fur seal rookeries on St. Paul, with designated viewing areas from where to see them.
Upland wildlife includes songbirds, snowy owls and blue foxes. A resident reindeer herd is located on St. Paul. A deep-water port and fish processing plants are located in both communities. As far as human inhabitants, the village of St. Paul is the largest Aleut community in the world.
The U.S. dollar (USD) is the official currency. Traveler's checks and credit cards are also widely accepted.