Kenai Peninsula Borough is a borough in the U.S. state of Alaska. As of the 2020 census, the population was 58,799, up from 55,400 in 2010. The borough seat is Soldotna, the largest city is Kenai, and the most populated community is the census-designated place of Kalifornsky.
The borough includes most of the Kenai Peninsula and a large area of the mainland of Alaska on the opposite side of Cook Inlet.
Augustine Volcano (Sugpiaq: Utakineq; Dena'ina: Chu Nula) is a stratovolcano in Alaska consisting of a central complex of summit lava domes and flows surrounded by an apron of pyroclastic, lahar, avalanche, and ash deposits. The volcano forms Augustine Island, colloquially called Mount St. Augustine, in southwestern Cook Inlet in the Kenai Peninsula Borough of southcentral coastal Alaska, about 70 miles (113 km) west of Homer and about 175 miles (282 km) southwest of Anchorage.
The volcano is frequently active, with major eruptions recorded in 1883, 1935, 1963–64, 1976, 1986, and 2006. Minor eruptive events were reported in 1812, 1885, 1908, 1944, and 1971. The large eruptions are characterized by an explosive onset followed by the quieter effusion of lava. Augustine Island has a land area of 32.4 square miles (83.9 km), while West Island, just off Augustine's western shores, has 2 sq mi (5.2 km). The irregular coastline of Augustine Island is due to the repeated catastrophic collapse of the summit dome, forming debris avalanches down the flanks and into Cook Inlet.
Homer (Dena'ina: Tuggeght) is a city in Kenai Peninsula Borough in the U.S. state of Alaska. It is 218 mi (351 km) southwest of Anchorage. According to the 2020 census, the population was 5,522, up from 5,003 in 2010. Long known as the "Halibut Fishing Capital of the World", Homer is also nicknamed "the end of the road", and more recently, "the cosmic hamlet by the sea".
Seward (Alutiiq: Qutalleq; Dena'ina: Tl'ubugh) is an incorporated home rule city in Alaska, United States. Located on Resurrection Bay, a fjord of the Gulf of Alaska on the Kenai Peninsula, Seward is situated on Alaska's southern coast, approximately 120 miles (190 km) by road from Alaska's largest city, Anchorage.
With a population of 2,717 people as of the 2020 census, Seward is the fourth-largest city in the Kenai Peninsula Borough, behind Kenai, Homer, and the borough seat of Soldotna. The city is named for former United States Secretary of State William H. Seward, who orchestrated the United States' purchase of Alaska from the Russian Empire in 1867 while serving in this position as part of President Andrew Johnson's administration.