Annex is located in Malheur County, OR. The population is 267, making Annex the 4th largest city in Malheur County.
There are 0 public schools in Annex with an average Homefacts rating of NA. The total crime rate for Annex is very low , and there are 0 registered sex offenders residing in the city. Unemployment in Annex is very high and the median home sales price is $0. Detailed and up-to-date Annex property reports are available for any property address.