Jefferson County, Montana Population 2018

Jefferson County, Montana's estimated population is 11,891 with a growth rate of 2.50% in the past year according to the most recent United States census data. Jefferson County, Montana is the 15th largest county in Montana.

Year Population Growth Growth Rate
201711,8912902.50%
201611,601-169-1.44%
201611,7702171.88%
201511,553750.65%
201411,478430.38%
201311,4351181.04%
201211,317-54-0.47%
201111,371-35-0.31%
201011,4063,46743.67%
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, Montana Population Growth

Population Data via

Population by Race

Race Population
White11,011
Two or More Races324
American Indian and Alaska Native190
Some Other Race37
Asian31
Black or African American8

Race Data via US Census (2016 ACS 5-Year Survey)

Jefferson County, Montana Population Pyramid 2018

0%2%4%6%8%10% Male Population0%2%4%6%8%10% Female Population80757065605550454035302520151050

Data via US Census (2016 ACS 5-Year Survey): Table S0101

Jefferson County, Montana Median Age

47.9


Total

47.7


Male

48


Female

Jefferson County, Montana Adults

There are 9,165 adults, (2,146 of which are seniors) in Jefferson County, Montana.

Jefferson County, Montana Age Dependency

65.5

Age Dependency Ratio

30.7

Old Age Dependency Ratio

34.8

Child Dependency Ratio

Jefferson County, Montana Sex Ratio

Female

5,643

48.64%

Male

5,958

51.36%

Jefferson County, Montana Households and Families

Jefferson County, Montana Renter vs Owner Occupied by Household Type

Jefferson County, Montana Household Types

Type Owner Renter
Married91.4%8.6%
Male86%14%
All84.5%15.5%
Non Family74.2%25.8%
Female66.3%33.7%

84.5%

Rate of Home Ownership

Jefferson County, Montana Households by Type

Type Count Average Size Owned
All4,4682.5384.5
Married2,7312.9291.4
Non Family1,2411.2574.2
Female3323.4266.3
Male1644.1486

2.93

Average Family Size

2.53

Average Household Size

6.2%

Unmarried (Opposite Sex)

0.3%

Unmarried (Same Sex)

Jefferson County, Montana Households

Jefferson County, Montana Education

Jefferson County, Montana Educational Attainment by Sex (over 25)

Education Attained Count Percentage
Less Than 9th Grade1601.90%
9th to 12th Grade2683.18%
High School Graduate2,33127.63%
Some College2,16925.71%
Associates Degree7198.52%
Bachelors Degree1,94423.04%
Graduate Degree84610.03%

Jefferson County, Montana Educational Attainment by Race

Name Total High School Bachelors
White7,9697,6262,681
Multiple Races16416360
Hispanic15414447
Native American14066
Asian16161
Other Race101010
Black88

The highest rate of high school graduation is among black people with a rate of 100.00%.

The highest rate of bachelors degrees is among black people with a rate of 100.00%.

Jefferson County, Montana Earnings by Educational Attainment

Name Average Male Female
Overall$38,003$49,110$30,503
Less Than High School$23,250$31,719$9,375
High School Grad$31,045$36,676$24,870
Some College$33,810$44,915$29,777
Bachelors Degree$42,798$56,453$33,696
Graduate Degree$68,468$74,783$58,750

$38,003

Average Earnings

$49,110

Average Male

$30,503

Average Female

Jefferson County, Montana Language

Jefferson County, Montana Language by Age

Jefferson County, Montana Language

97.58% of Jefferson County, Montana residents speak only English, while 2.42% speak other languages. The largest non-English language is OtherIndoEuro, which is spoken by 1.05% of the population.

Jefferson County, Montana Poverty

Jefferson County, Montana Poverty by Race

Name Total In Poverty Poverty Rate
White10,6488618.09%
Hispanic2475622.67%
Native1483825.68%
Multiple323288.67%

8.55%

Overall Poverty Rate

8.60%

Male Poverty Rate

8.49%

Female Poverty Rate

Poverty in Jefferson County, Montana

The race most likely to be in poverty in Jefferson County, Montana is Native, with 25.68% below the poverty level.

The race least likely to be in poverty in Jefferson County, Montana is White, with 8.09% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 4.55%. Among those working part-time, it was 10.01%, and for those that did not work, the poverty rate was 11.21%.

Jefferson County, Montana Poverty Rate by Education

Name Poverty
Less Than High School14.21%
High School14.19%
Some College6.45%
Bachelors or Greater2.69%

Jefferson County, Montana Poverty Rate by Employment Status and Sex

Name Poverty
Male Unemployed33.93%
Female Unemployed16.13%
Male Employed6.77%
Female Employed5.15%

Jefferson County, Montana Income

Jefferson County, Montana Income by Household Type

Name Median Mean
Households$62,939$79,309
Families$74,753$90,505
Married Families$81,250$
Non Families$39,007$45,898

Jefferson County, Montana Marital Status

Jefferson County, Montana Marital Status

Marriage Rates

59.3%

Overall Marriage Rate

59.4%

Male Marriage Rate

59.2%

Female Marriage Rate

Jefferson County, Montana Married by Age and Sex

Jefferson County, Montana Marriage

The age group where males are most likely to be married is Over65, while the female age group most likely to be married is 45To54.

Jefferson County, Montana Marital Status by Race

Jefferson County, Montana Veterans

Jefferson County, Montana Veterans by War

1,270

Number of Veterans

1,178

Male Veterans

92

Female Veterans

Name Veterans
Vietnam657
First Gulf War261
Second Gulf War168
Korea119
World War II

Jefferson County, Montana Veterans by Age

Name Veterans
55 to 64387
65 to 74361
35 to 54296
75+183
18 to 3443

Jefferson County, Montana Veterans by Race

Name Veterans % of Total
White1,17013.35%
Indian6546.43%
2 or More3517.41%
Hispanic105.68%

Jefferson County, Montana Veterans by Education

6.55%

Veteran Poverty Rate

30.15%

Veteran Disability Rate

Jefferson County, Montana Employment Status

Jefferson County, Montana Employment by Age

60.1%

Labor Force Participation

56.2%

Employment Rate

6.2%

Unemployment Rate

Jefferson County, Montana Employment by Race

Jefferson County, Montana Employment by Education

Population of Cities in Jefferson County, Montana

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