The Warren post office was established in 1885; it was named by local resident James Gill for his hometown of Warren, Massachusetts.[5] The post office was discontinued in 1888, but reestablished in 1890 as "Gilltown" because there was another post office named Warren in Umatilla County.[5] The Columbia County office became Warren again in 1895, and the Umatilla County office was closed in 1902; the locality in Umatilla County is now known as Myrick.[5]
As of the 2020 census, there were 1,870 people, 782 families, and 741 housing units.[7] In the city, there were 1,683 White people, 11 African Americans, 22 Native Americans, 12 Asians, 3 Pacific Islanders, 10 people who said they were from another race, and 129 who were from two or more races. 86 people were of Hispanic or Latino origin.[7]
The median age in Warren was 59.9 years old. With 37.6% of the population being over 65, 22.4% were from 65 to 74, 14.3% 75 to 84, and 0.9% were older than 85. 1.4% of the population were foreign born.[7]
The median household income was $88,409. For families it was $104,196, for married-couple families it was the same, and for non-families it was $42,205. 1.8% of the population were in poverty. 5.3% of people under 18 were in poverty, 2.1% of people 18 to 64 years old were in poverty, and 0.0% of people over 65 were in poverty.[7]
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, Warren has a warm-summer Mediterranean climate, abbreviated "Csb" on climate maps.[8]
