Jefferson, OR has a population of 3,207 and is the 8,469th largest city in the United States. The population density is 3,843 per sq mi which is 9604% higher than the Oregon average and 4141% higher than the national average. The median age in Jefferson is 34 which is approximately 12% lower than the Oregon average of 39. In Jefferson, 59% of the population over 15 years of age are married, 79% speak English and 19% speak Spanish. 57% of Jefferson residents were born in Oregon, 33% were born out of state, 0% were born outside of the United States and 10% were foreign born.
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The population density in Jefferson is 9604% higher than Oregon.
The median age in Jefferson is 12% lower than Oregon.
In Jefferson 87.87% of the population is White.
In Jefferson 0.00% of the population is Black or African American.