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.
Geography
left|thumb|View of [[Seldovia, Alaska|Seldovia, located along Kachemak Bay]]
The borough has a total area of , of which is land and (3.4%) is water.
Adjacent boroughs and census areas
- Bethel Census Area, Alaska - northwest
- Matanuska-Susitna Borough, Alaska - north
- Municipality of Anchorage, Alaska - north
- Chugach Census Area, Alaska - east
- Lake and Peninsula Borough, Alaska - west
- Kodiak Island Borough, Alaska - south
National protected areas
- Alaska Maritime National Wildlife Refuge (part of Gulf of Alaska unit)
- Chiswell Islands
- Tuxedni Wilderness
- Chugach National Forest (part)
- Katmai National Park and Preserve (part)
- Katmai Wilderness (part)
- Kenai Fjords National Park
- Kenai National Wildlife Refuge
- Kenai Wilderness
- Lake Clark National Park and Preserve (part)
- Lake Clark Wilderness (part)
Ecology
Bear Lake, Tutka Bay, and the Trail Lakes, have been the site of salmon enhancement activities. All three sites are managed by the Cook Inlet Aquaculture Association Some of the fish hatched at these facilities are released into the famous Homer fishing hole. Cook Inlet Keeper and the Cook Inlet Regional Citizen's Advisory Council are groups that attempt to influence public policy on the use of the area's resources.