Lewis and Clark County, Montana Population 2019

Lewis and Clark County, Montana's estimated population is 67,849 with a growth rate of 1.42% 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
201868,7008511.25%
201767,8499471.42%
201666,9026741.02%
201566,2285240.80%
201465,7044720.72%
201365,2325020.78%
201264,7304680.73%
201164,2626871.08%
201063,57516,08033.86%
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%

How Many People Live in Lewis and Clark County, Montana?

67,849

Population by Race

Race Population Percentage
White62,19393.82%
Two or More Races1,7782.68%
American Indian and Alaska Native1,3001.96%
Asian4400.66%
Some Other Race3140.47%
Black or African American2200.33%
Native Hawaiian and Other Pacific Islander450.07%

Lewis and Clark County, Montana Population Pyramid 2019

Lewis and Clark County, Montana Median Age

41.1


Total

40


Male

42.7


Female

Lewis and Clark County, Montana Adults

There are 51,939 adults, (11,034 of whom are seniors) in Lewis and Clark County, Montana.

Lewis and Clark County, Montana Age Dependency

62.1

Age Dependency Ratio

27

Old Age Dependency Ratio

35.1

Child Dependency Ratio

Lewis and Clark County, Montana Sex Ratio

Female

33,392

50.37%

Male

32,898

49.63%

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
Married84.7%15.3%
All68.7%31.3%
Male61.1%38.9%
Female55%45%
Non Family52.3%47.7%

68.7%

Rate of Home Ownership

Type Count Average Size Owned
All27,5342.3468.7
Married13,4232.9584.7
Non Family10,3291.2652.3
Female2,6353.2655
Male1,1472.8861.1

2.9

Average Family Size

2.34

Average Household Size

6.6%

Unmarried (Opposite Sex)

0.2%

Unmarried (Same Sex)

Lewis and Clark County, Montana Education

Education Attained Count Percentage
Less Than 9th Grade6511.40%
9th to 12th Grade1,5633.36%
High School Graduate11,51324.77%
Some College11,45924.65%
Associates Degree3,8568.30%
Bachelors Degree11,20124.10%
Graduate Degree6,24213.43%

Lewis and Clark County, Montana Educational Attainment by Race

Name Total High School Bachelors
White43,44441,50416,621
Hispanic957868257
Multiple Races907890255
Native American787634106
Asian285268165
Other Race17412643
Black15114324
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 asian people with a rate of 57.89%.

Name Average Male Female
Overall$37,794$43,081$33,809
Less Than High School$16,308$17,217$15,674
High School Grad$30,019$31,556$25,767
Some College$34,467$39,242$29,364
Bachelors Degree$49,624$54,384$40,783
Graduate Degree$61,069$67,457$53,143

$37,794

Average Earnings

$43,081

Average Male

$33,809

Average Female

Lewis and Clark County, Montana Language

Lewis and Clark County, Montana Language by Age

Lewis and Clark County, Montana Language

97.63% of Lewis and Clark County, Montana residents speak only English, while 2.37% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 1.44% of the population.

Lewis and Clark County, Montana Poverty

Lewis and Clark County, Montana Poverty by Race

Name Total In Poverty Poverty Rate
White59,5656,27710.54%
Hispanic1,89564233.88%
Native1,24526521.29%
Multiple1,70823313.64%
Other3128627.56%
Black1966734.18%
Asian425184.24%
Islander45511.11%

11.44%

Overall Poverty Rate

11.40%

Male Poverty Rate

11.48%

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 Black, with 34.18% below the poverty level.

The race least likely to be in poverty in Lewis and Clark County, Montana is Asian, with 4.24% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 2.14%. Among those working part-time, it was 18.13%, and for those that did not work, the poverty rate was 18.71%.

Name Poverty
Less Than High School29.20%
High School14.72%
Some College7.56%
Bachelors or Greater3.14%
Name Poverty
Female Unemployed24.75%
Male Unemployed20.68%
Male Employed6.56%
Female Employed6.44%

Lewis and Clark County, Montana Income

Lewis and Clark County, Montana Income by Household Type

Name Median Mean
Households$60,789$73,285
Families$75,577$87,621
Married Families$84,501$98,292
Non Families$37,276$46,187

Lewis and Clark County, Montana Marital Status

Lewis and Clark County, Montana Marital Status

Marriage Rates

51.9%

Overall Marriage Rate

52.6%

Male Marriage Rate

51.1%

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 35-44, while the female age group most likely to be married is 45-54.

Lewis and Clark County, Montana Marital Status by Race

Lewis and Clark County, Montana Veterans

6,205

Number of Veterans

5,536

Male Veterans

669

Female Veterans

War Veterans
Vietnam2,060
Second Gulf War1,552
First Gulf War1,351
Korea465
World War II326
Age Group Veterans
65 to 741,705
35 to 541,555
55 to 641,133
75+1,085
18 to 34727

Lewis and Clark County, Montana Veterans by Race

Name Veterans % of Total
White6,00412.24%
2 or More11811.14%
Hispanic1138.77%
Indian697.49%
Asian143.83%

Lewis and Clark County, Montana Veterans by Education

6.42%

Veteran Poverty Rate

27.67%

Veteran Disability Rate

Lewis and Clark County, Montana Employment Status

66.1%

Labor Force Participation

63.8%

Employment Rate

3.2%

Unemployment Rate

Lewis and Clark County, Montana Place of Birth

Origin of Non Citizens

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

56.60%

Born in Montana

98.67%

Native Born

1.33%

Foreign Born

0.51%

Non Citizen

Place of Birth

98.67% of Lewis and Clark County, Montana residents were born in the United States, with 56.60% having been born in Montana. 0.51% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Europe.

Population of Cities in Lewis and Clark County, Montana

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