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Alsea, Oregon
Alsea, Oregon
Unincorporated community & census-designated place
	Alsea Mercantile
	Alsea, Oregon Location within the state of Oregon Alsea, Oregon Alsea, Oregon (the United States)
	Coordinates: 44°22′53″N 123°35′47″W / 44.38139°N 123.59639°W
Country	United States
State	Oregon
County	Benton
Named for	Alsea River
Area
• Total	0.16 sq mi (0.40 km2)
• Land	0.16 sq mi (0.40 km2)
• Water	0.00 sq mi (0.00 km2)
Elevation	295 ft (90 m)
Population (2020)
• Total	220
• Density	1,057.69/sq mi (407.95/km2)
Time zone	UTC-8 (PST)
• Summer (DST)	UTC-7 (PDT)
ZIP codes	97324
Area code	541
FIPS code	41-01800
GNIS feature ID	1137169

Alsea (/ˈælsi/ AL-see) is an unincorporated community in Benton County, in the U.S. state of Oregon. It is on Oregon Route 34 and the Alsea River. For statistical purposes, the United States Census Bureau has defined Alsea as a census-designated place (CDP). The census definition of the area may not precisely correspond to the local understanding of the area with the same name. As of the 2023 Census population estiamtes, the population was 220.^[4]

History

Alsea was named for the Alsea River, whose name was a corruption of "Alsi" (also spelled "Ulseah" and "Alsiias") the name of a Native American tribe, now known as the Alsea, that lived at the mouth of the river. The Alsea area was settled by Europeans early as 1855, when the name "Alseya Settlement" appeared on the Surveyor general's map. Alsea post office was established in 1871.^[5]

In the early 1850s settlers moved from the Willamette Valley into the Alsea area to take up donation land claims.^[6] While logging was once the primary industry in Alsea, it is now known as a place for fishing on the Alsea River, particularly for steelhead,^[7] and a favorite stopping point on a well-traveled cycling loop.^[8]

Climate

This region experiences warm (but not hot) and dry summers, with no average monthly temperatures above 71.6 °F (22.0 °C). According to the Köppen Climate Classification system, Alsea has a warm-summer Mediterranean climate, abbreviated "Csb" on climate maps.^[9]

Climate data for Alsea Fish Hatchery
Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
Record high °F (°C)	55 (13)	61 (16)	65 (18)	82 (28)	94 (34)	92 (33)	95 (35)	90 (32)	83 (28)	68 (20)	62 (17)	55 (13)	95 (35)
Mean daily maximum °F (°C)	46.2 (7.9)	48.2 (9.0)	50.2 (10.1)	55 (13)	61.7 (16.5)	66.1 (18.9)	74.5 (23.6)	73.9 (23.3)	69.2 (20.7)	57.3 (14.1)	49.2 (9.6)	42.2 (5.7)	57.8 (14.3)
Mean daily minimum °F (°C)	36.3 (2.4)	35.8 (2.1)	36.5 (2.5)	38.2 (3.4)	42.4 (5.8)	47.4 (8.6)	49.8 (9.9)	50.5 (10.3)	47.9 (8.8)	43.2 (6.2)	39.6 (4.2)	33.1 (0.6)	41.7 (5.4)
Record low °F (°C)	25 (−4)	17 (−8)	26 (−3)	27 (−3)	30 (−1)	38 (3)	40 (4)	39 (4)	39 (4)	30 (−1)	28 (−2)	11 (−12)	11 (−12)
Average precipitation inches (mm)	14.85 (377)	11.17 (284)	11.15 (283)	6.9 (180)	4.05 (103)	2.38 (60)	0.65 (17)	1.12 (28)	2.85 (72)	6.52 (166)	13.94 (354)	16.3 (410)	91.89 (2,334)
Average snowfall inches (cm)	1.7 (4.3)	1.4 (3.6)	0.5 (1.3)	0 (0)	0 (0)	0 (0)	0 (0)	0 (0)	0 (0)	0 (0)	0.1 (0.25)	1.2 (3.0)	4.9 (12)
Average precipitation days	20	17	20	17	12	9	4	5	8	13	19	20	164
Source: ^[10]

Demographics

Historical population
Census	Pop.	%±
2010	164	—
2020	165	0.6%
U.S. Decennial Census^[11]^[3]

School

Alsea Charter School, including Alsea High School, is a charter school that serves K-12 and has an enrollment of 321 students as of 2024.^[12]

Covered bridge

Near Alsea is Hayden Bridge, a historic covered bridge listed on the National Register of Historic Places in 1979.^[13] The bridge carries Hayden Road over the river from an intersection with Route 34 about 2 miles (3 km) west of Alsea.^[14]

Notable people

Thomas Benton Slate (December 2, 1880 – November 26, 1980) was raised in Alsea. He invented the first commercially viable method of producing dry ice,^[15] and later financed the construction of an all-aluminum hulled airship, The City of Glendale, completed in 1929 but never flown.^[16]

References

^ "ArcGIS REST Services Directory". United States Census Bureau. Retrieved October 12, 2022.
^ ^a ^b U.S. Geological Survey Geographic Names Information System: Alsea, Oregon
^ ^a ^b "Census Population API". United States Census Bureau. Retrieved October 12, 2022.
^ "Population and Housing Occupancy Status: 2020". U.S. Census Bureau. Retrieved November 30, 2022.
^ McArthur, Lewis A.; Lewis L. McArthur (2003) [1928]. Oregon Geographic Names (7th ed.). Portland, Oregon: Oregon Historical Society Press. pp. 19–20. ISBN 0-87595-277-1.
^ "Alsea Falls Recreation Site" (PDF). Bureau of Land Management, Salem District. Archived from the original (PDF) on January 22, 2009. Retrieved December 24, 2009.
^ "Our Town 2004–2005: Who We Are Today". Mid-Valley News. Mid-Valley Online. Archived from the original on June 2, 2003. Retrieved December 24, 2009.
^ "Alsea Falls Loop". The Travel Oregon Network. 2011. Retrieved August 2, 2011.
^ "Alsea, Oregon". Weatherbase. CantyMedia. 2016. Retrieved September 23, 2016.
^ "Alsea F H Fall Creek, OR (350145)". Western Regional Climate Center. Retrieved November 22, 2015.
^ "Census of Population and Housing". Census.gov. Retrieved June 4, 2016.
^ "Alsea Charter School". US News Education. 2024. Retrieved August 24, 2024.
^ "Oregon National Register List" (PDF). Oregon Parks and Recreation Department. Archived from the original (PDF) on June 9, 2011. Retrieved December 24, 2009.
^ "Alsea River (Hayden) Covered Bridge" (PDF). Oregon Department of Transportation. Retrieved December 4, 2014.
^ John, Finn J.D. "Benton County lad became the "Nicola Tesla of Oregon"". Off Beat Oregon. Retrieved December 11, 2019.
^ "Slate Aircraft Corporation City of Glendale Negatives 1928–1929". Smithsonian National Air and Space Museum. Retrieved December 12, 2019.