|— City —|
|Columbia River in Irrigon|
|Incorporated||February 28, 1957|
|• Mayor||David Burns|
|• Total||1.45 sq mi (3.76 km2)|
|• Land||1.30 sq mi (3.37 km2)|
|• Water||0.15 sq mi (0.39 km2)|
|Elevation||297 ft (90.5 m)|
|• Estimate (2012)||1,809|
|• Density||1,404.6/sq mi (542.3/km2)|
|Time zone||Pacific (UTC-8)|
|• Summer (DST)||Pacific (UTC-7)|
|GNIS feature ID||1167710|
Irrigon is a city in Morrow County, Oregon, United States, on the Columbia River and U.S. Route 730. Irrigon was incorporated on February 28, 1957. The Umatilla Chemical Depot and the Umatilla Chemical Agent Disposal Facility are located four miles south of the city, northeast of the intersection of I-84 and I-82. Three miles west of Irrigon is the Irrigon Hatchery. The population was 1,826 at the 2010 census.
2010 census 
As of the census of 2010, there were 1,826 people, 602 households, and 463 families residing in the city. The population density was 1,404.6 inhabitants per square mile (542.3 /km2). There were 640 housing units at an average density of 492.3 per square mile (190.1 /km2). The racial makeup of the city was 76.2% White, 0.4% African American, 1.4% Native American, 0.6% Asian, 0.1% Pacific Islander, 18.5% from other races, and 2.7% from two or more races. Hispanic or Latino of any race were 32.0% of the population.
There were 602 households of which 44.0% had children under the age of 18 living with them, 58.0% were married couples living together, 11.1% had a female householder with no husband present, 7.8% had a male householder with no wife present, and 23.1% were non-families. 17.4% of all households were made up of individuals and 6.4% had someone living alone who was 65 years of age or older. The average household size was 3.03 and the average family size was 3.43.
The median age in the city was 33.3 years. 31.9% of residents were under the age of 18; 7.6% were between the ages of 18 and 24; 26.3% were from 25 to 44; 23.2% were from 45 to 64; and 11.2% were 65 years of age or older. The gender makeup of the city was 49.2% male and 50.8% female.
2000 census 
As of the census of 2000, there were 1,702 people, 565 households, and 441 families residing in the city. The population density was 1,376.5 people per square mile (530.0/km²). There were 609 housing units at an average density of 492.5 per square mile (189.6/km²). The racial makeup of the city was 72.91% White, 0.18% African American, 1.12% Native American, 0.41% Asian, 22.91% from other races, and 2.47% from two or more races. Hispanic or Latino of any race were 27.26% of the population.
There were 565 households out of which 40.2% had children under the age of 18 living with them, 60.0% were married couples living together, 12.4% had a female householder with no husband present, and 21.8% were non-families. 16.5% of all households were made up of individuals and 6.0% had someone living alone who was 65 years of age or older. The average household size was 3.01 and the average family size was 3.33.
In the city the population was spread out with 32.5% under the age of 18, 10.0% from 18 to 24, 27.1% from 25 to 44, 21.0% from 45 to 64, and 9.4% who were 65 years of age or older. The median age was 30 years. For every 100 females there were 96.3 males. For every 100 females age 18 and over, there were 96.1 males.
The median income for a household in the city was $35,799, and the median income for a family was $35,573. Males had a median income of $29,435 versus $21,953 for females. The per capita income for the city was $14,600. About 12.9% of families and 13.8% of the population were below the poverty line, including 21.1% of those under age 18 and 5.9% of those age 65 or over.
- "US Gazetteer files 2010". United States Census Bureau. Retrieved 2012-12-21.
- "American FactFinder". United States Census Bureau. Retrieved 2012-12-21.
- "Population Estimates". United States Census Bureau. Retrieved 2013-06-02.
- "American FactFinder". United States Census Bureau. Retrieved 2008-01-31.
- "US Board on Geographic Names". United States Geological Survey. 2007-10-25. Retrieved 2008-01-31.
- Irrigon Hatchery at the Oregon Department of Fish and Wildlife
- Entry for Irrigon in the Oregon Blue Book
- Irrigon profile from the State of Oregon Infrastructure Finance Authority