Below are a list of the cities located in Jefferson County, OR. There are 6 total unique zip codes in Jefferson County, Oregon. The time zone for Jefferson County is the Pacific Daylight Time zone and they follow daylight savings time. The Federal Information Processing System (FIPS) Code for echo $county.' County, '.$state_abbrev ?> is 41031.
The population in Jefferson County, OR is currently 25,068. That is an increase of 19.05% vs the population of 21,720 in 2010.