Biohazard Cleanup Near Downtown Knappa Knappa, OR

Knappa is an unincorporated community and census-designated place in Clatsop County, Oregon, never an incorporated city, recorded as a census-designated place in the 2020 census.

Knappa lies on the south bank of the Columbia River about 12 miles directly east of Astoria.

As of the 2020 census, Knappa had a population of 1,007.

Knappa is named after Aaron Knapp Jr., an early settler, and its post office operated from 1872 to 1943.

Logging and fishing are the primary economic activities in Knappa.

Knappa faces the Columbia River, where several islands make up the Lewis and Clark National Wildlife Refuge, established in 1972 as a wintering and resting area for an estimated 1,000 tundra swans, 5,000 geese, and 30,000 ducks.

The Blind Slough Swamp Preserve near Knappa protects a rare Sitka spruce swamp, one of the best remaining examples in Oregon of a habitat type once common in coastal estuaries from Tillamook County to Alaska, adjacent to the wildlife refuge.

Knappa is in Knappa School District 4, which comprises Hilda Lahti Elementary School and Knappa High School, and Clatsop County is in the boundary of Clatsop Community College.

Knappa covers 2.11 square miles, of which 2.07 square miles is land, at an elevation of 121 feet.

Knappa's own ZIP code is 97103.