Helix is a city in Umatilla County, Oregon, United States. The population was 184 at the 2010 census. It is part of the Pendleton–Hermiston Micropolitan Statistical Area.
Helix, a geometry term and a part of the ear, was originally to be named Oxford, but authorities declined that option when the community's post office was to be named in 1880. The citizens then decided on Helix since a resident had recently had ear surgery. The author of Oregon Geographic Names, Lewis A. McArthur, had his doubts about the story.
According to the United States Census Bureau, the city has a total area of 0.13 square miles (0.34 km2), all of it land.
As of the census of 2010, there were 184 people, 55 households, and 46 families living in the city. The population density was 1,415.4 inhabitants per square mile (546.5/km2). There were 68 housing units at an average density of 523.1 per square mile (202.0/km2). The racial makeup of the city was 81.0% White, 8.7% Native American, 3.8% from other races, and 6.5% from two or more races. Hispanic or Latino of any race were 6.0% of the population.
There were 55 households, of which 43.6% had children under the age of 18 living with them, 63.6% were married couples living together, 10.9% had a female householder with no husband present, 9.1% had a male householder with no wife present, and 16.4% were non-families.