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Idanha, Oregon facts for kids

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Idanha, Oregon
Idanha City Hall
Idanha City Hall
Location in Oregon
Location in Oregon
Country United States
State Oregon
Counties Marion, Linn
Incorporated 1949
 • Total 1.10 sq mi (2.86 km2)
 • Land 1.07 sq mi (2.77 km2)
 • Water 0.03 sq mi (0.08 km2)
1,718 ft (523.6 m)
 • Total 156
 • Density 145.79/sq mi (56.31/km2)
Time zone UTC-8 (Pacific)
 • Summer (DST) UTC-7 (Pacific)
ZIP code
Area code(s) 503
FIPS code 41-35800
GNIS feature ID 1143981

Idanha is a city on the Marion County/Linn County line in Oregon, United States, on Oregon Route 22 and the Santiam River. The population was 134 at the 2010 census.

The Marion County portion of Idanha is part of the Salem Metropolitan Statistical Area, while the Linn County portion is part of the AlbanyLebanon Micropolitan Statistical Area.


According to the United States Census Bureau, the city has a total area of 1.09 square miles (2.82 km2), of which 1.06 square miles (2.75 km2) is land and 0.03 square miles (0.08 km2) is water.

Idanha encompasses the area of New Idanha in Linn County, classed by the USGS as a separate populated place.


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, Idanha has a warm-summer Mediterranean climate, abbreviated "Csb" on climate maps.


Historical population
Census Pop.
1950 442
1960 295 −33.3%
1970 382 29.5%
1980 319 −16.5%
1990 289 −9.4%
2000 232 −19.7%
2010 134 −42.2%
2020 156 16.4%
U.S. Decennial Census

2010 census

As of the census of 2010, there were 134 people, 65 households, and 34 families living in the city. The population density was 126.4 inhabitants per square mile (48.8/km2). There were 86 housing units at an average density of 81.1 per square mile (31.3/km2). The racial makeup of the city was 96.3% White and 3.7% from two or more races. Hispanic or Latino of any race were 5.2% of the population.

There were 65 households, of which 12.3% had children under the age of 18 living with them, 46.2% were married couples living together, 1.5% had a female householder with no husband present, 4.6% had a male householder with no wife present, and 47.7% were non-families. 36.9% of all households were made up of individuals, and 12.3% had someone living alone who was 65 years of age or older. The average household size was 2.06 and the average family size was 2.62.

The median age in the city was 51.2 years. 11.2% of residents were under the age of 18; 5.8% were between the ages of 18 and 24; 12.6% were from 25 to 44; 52.2% were from 45 to 64; and 17.9% were 65 years of age or older. The gender makeup of the city was 56.7% male and 43.3% female.


Idanha served as the eastern terminus of a transcontinental railroad, proposed by Colonel T. Egenton Hogg, that terminated in Idanha because of a lack of funding. Idanha saw rail service until the 1950s, when the track was removed for development of Detroit Lake, situated over the historical roadbed of the former Oregon Pacific Railroad.


Idanha is served by the Santiam Canyon School District.

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