Lewis and Clark County, Montana Population 2018

Lewis and Clark County, Montana's estimated population is 67,773 with a growth rate of 2.70% in the past year according to the most recent United States census data. Lewis and Clark County, Montana is the 6th largest county in Montana.

Year Population Growth Growth Rate
201767,7731,7842.70%
201665,989-803-1.20%
201666,7926540.99%
201566,1385330.81%
201465,6054650.71%
201365,1404180.65%
201264,7224800.75%
201164,2426771.07%
201063,56516,07033.84%
199047,4954,45610.35%
198043,0399,75829.32%
197033,2815,27518.84%
196028,0063,46614.12%
195024,5402,40910.89%
194022,1313,90721.44%
193018,224-436-2.34%
192018,660-3,193-14.61%
191021,8532,68213.99%
190019,171260.14%
189019,14512,624193.59%
18806,5211,48129.38%
18705,0400.00%

Lewis and Clark County, Montana Population Growth

Population Data via

Population by Race

Race Population
White61,913
American Indian and Alaska Native1,656
Two or More Races1,440
Asian443
Black or African American290
Some Other Race197
Native Hawaiian and Other Pacific Islander50

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

Lewis and Clark County, Montana Population Pyramid 2018

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

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

Lewis and Clark County, Montana Median Age

41.2


Total

40


Male

42.7


Female

Lewis and Clark County, Montana Adults

There are 51,603 adults, (10,624 of which are seniors) in Lewis and Clark County, Montana.

Lewis and Clark County, Montana Age Dependency

61.3

Age Dependency Ratio

26

Old Age Dependency Ratio

35.2

Child Dependency Ratio

Lewis and Clark County, Montana Sex Ratio

Female

33,150

50.24%

Male

32,839

49.76%

Lewis and Clark County, Montana Households and Families

Lewis and Clark County, Montana Renter vs Owner Occupied by Household Type

Lewis and Clark County, Montana Household Types

Type Owner Renter
Married84.5%15.5%
All69.1%30.9%
Male61.9%38.1%
Non Family54.7%45.3%
Female50.6%49.4%

69.1%

Rate of Home Ownership

Lewis and Clark County, Montana Households by Type

Type Count Average Size Owned
All26,7652.469.1
Married13,0272.9884.5
Non Family10,0811.2954.7
Female2,4453.4650.6
Male1,2123.1761.9

2.97

Average Family Size

2.4

Average Household Size

7.1%

Unmarried (Opposite Sex)

0.3%

Unmarried (Same Sex)

Lewis and Clark County, Montana Households

Lewis and Clark County, Montana Education

Lewis and Clark County, Montana Educational Attainment by Sex (over 25)

Education Attained Count Percentage
Less Than 9th Grade6861.49%
9th to 12th Grade1,6683.62%
High School Graduate11,28724.50%
Some College11,33524.60%
Associates Degree3,8258.30%
Bachelors Degree11,16924.24%
Graduate Degree6,10313.25%

Lewis and Clark County, Montana Educational Attainment by Race

Name Total High School Bachelors
White43,17441,05216,507
Native American952806149
Hispanic938882250
Multiple Races655638163
Asian269251201
Black17716428
Other Race1028028
Islander88

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

The highest rate of bachelors degrees is among islander people with a rate of 74.72%.

Lewis and Clark County, Montana Earnings by Educational Attainment

Name Average Male Female
Overall$37,023$41,786$32,920
Less Than High School$15,676$20,176$13,397
High School Grad$28,134$30,270$25,440
Some College$33,539$38,818$29,495
Bachelors Degree$47,325$51,762$40,710
Graduate Degree$57,533$64,681$51,243

$37,023

Average Earnings

$41,786

Average Male

$32,920

Average Female

Lewis and Clark County, Montana Language

Lewis and Clark County, Montana Language by Age

Lewis and Clark County, Montana Language

97.48% of Lewis and Clark County, Montana residents speak only English, while 2.52% speak other languages. The largest non-English language is Spanish, which is spoken by 1.35% of the population.

Lewis and Clark County, Montana Poverty

Lewis and Clark County, Montana Poverty by Race

Name Total In Poverty Poverty Rate
White59,3676,70311.29%
Hispanic1,82858131.78%
Native1,60631719.74%
Multiple1,38421115.25%
Other1976030.46%
Black2664918.42%
Asian419184.30%
Islander50510.00%

12.07%

Overall Poverty Rate

11.76%

Male Poverty Rate

12.38%

Female Poverty Rate

Poverty in Lewis and Clark County, Montana

The race most likely to be in poverty in Lewis and Clark County, Montana is Hispanic, with 31.78% below the poverty level.

The race least likely to be in poverty in Lewis and Clark County, Montana is Asian, with 4.30% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 2.55%. Among those working part-time, it was 18.19%, and for those that did not work, the poverty rate was 19.18%.

Lewis and Clark County, Montana Poverty Rate by Education

Name Poverty
Less Than High School27.03%
High School14.69%
Some College8.58%
Bachelors or Greater2.69%

Lewis and Clark County, Montana Poverty Rate by Employment Status and Sex

Name Poverty
Female Unemployed25.37%
Male Unemployed15.56%
Male Employed6.97%
Female Employed6.64%

Lewis and Clark County, Montana Income

Lewis and Clark County, Montana Income by Household Type

Name Median Mean
Households$59,170$71,023
Families$73,979$84,781
Married Families$83,049$95,810
Non Families$35,506$45,402

Lewis and Clark County, Montana Marital Status

Lewis and Clark County, Montana Marital Status

Marriage Rates

50.7%

Overall Marriage Rate

51.4%

Male Marriage Rate

50.0%

Female Marriage Rate

Lewis and Clark County, Montana Married by Age and Sex

Lewis and Clark 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 35To44.

Lewis and Clark County, Montana Marital Status by Race

Lewis and Clark County, Montana Veterans

Lewis and Clark County, Montana Veterans by War

6,034

Number of Veterans

5,453

Male Veterans

581

Female Veterans

Name Veterans
Vietnam2,066
First Gulf War1,304
Second Gulf War1,216
Korea501
World War II289

Lewis and Clark County, Montana Veterans by Age

Name Veterans
65 to 741,626
35 to 541,577
55 to 641,194
75+1,044
18 to 34593

Lewis and Clark County, Montana Veterans by Race

Name Veterans % of Total
White5,85612.00%
Hispanic12910.45%
Indian786.97%
2 or More567.14%
Black3215.31%
Asian112.89%
Other10.74%

Lewis and Clark County, Montana Veterans by Education

5.50%

Veteran Poverty Rate

26.86%

Veteran Disability Rate

Lewis and Clark County, Montana Employment Status

Lewis and Clark County, Montana Employment by Age

66.2%

Labor Force Participation

63.2%

Employment Rate

4.1%

Unemployment Rate

Lewis and Clark County, Montana Employment by Race

Lewis and Clark County, Montana Employment by Education

Population of Cities in Lewis and Clark County, Montana

City 2010 Census 2016 Estimated Growth Growth Rate
Helena2822031169294910.45%
East Helena20112074633.13%
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