Jefferson County Population 2017

Jefferson County's estimated population is 11,853 with a growth rate of 1.56% in the past year according to the most recent United States census data. Jefferson County is the 16th largest county in Montana.

Year Population Growth Growth Rate
201611,8531821.56%
201511,671990.86%
201411,572600.52%
201311,5121171.03%
201211,395-41-0.36%
201111,436420.37%
201011,3943,45543.52%
19907,93991012.95%
19807,0291,79134.19%
19705,23894121.90%
19604,2972837.05%
19504,014-650-13.94%
19404,66453112.85%
19304,133-1,070-20.57%
19205,203-398-7.11%
19105,6012715.08%
19005,330-696-11.55%
18906,0263,562144.56%
18802,46493360.94%
18701,5310.00%

Jefferson County Population Growth

Population Data via

Jefferson County Race Data

Race Population Percentage
White11,09393.59%
Two or More Races2682.26%
American Indian and Alaska Native2061.74%
Asian560.47%
Black or African American460.39%
Native Hawaiian and Other Pacific Islander20.02%

Jefferson County Population Pyramid

0k0k0k0k0k1k1kJefferson County Male Population0k0k0k0k0k1k1kJefferson County Female Population

Population of Cities in Jefferson County

City 2010 Census 2016 Estimated Growth Growth Rate
Boulder11791230514.33%
Whitehall10441114706.70%
Data Sources
  1. US Census City/Town Population estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. Population of States and Counties of the United States: 1790 - 1990