- source: Getty Thesaurus of Geographic Names
- source: Family History Library Catalog
- the text in this section is copied from an article in Wikipedia
Kenai Peninsula Borough is a borough of the U.S. state of Alaska. As of the 2010 census, the population was 55,400. The borough seat is Soldotna.
The borough includes the Kenai Peninsula and adjacent areas of the mainland of Alaska.
- source: Source:Population of States and Counties of the United States: 1790-1990
| Census Year || Population
| 1960 || 6,097
| 1970 || 14,250
| 1980 || 25,282
| 1990 || 40,802
Note: 1970 pop. in 1980 area: 16,586