Jefferson City, MT has a population of 686 and is the 17,602nd largest city in the United States. The population density is 30 per sq mi which is 333% higher than the Montana average and 67% lower than the national average. The median age in Jefferson City is 35 which is approximately 11% lower than the Montana average of 40. In Jefferson City, 62% of the population over 15 years of age are married, 93% speak English and 7% speak Spanish. 39% of Jefferson City residents were born in Montana, 56% were born out of state, 5% were born outside of the United States and 0% were foreign born.
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The population density in Jefferson City is 333% higher than Montana.
The median age in Jefferson City is 11% lower than Montana.
In Jefferson City 88.63% of the population is White.
In Jefferson City 0.00% of the population is Black or African American.
In Jefferson City 1.75% of the population is Asian.