Lewis and Clark County, Montana Population 2022

Lewis and Clark County, Montana's estimated population is 71,862 with a growth rate of 1.14% in the past year according to the most recent United States census data. Lewis and Clark County, Montana is the 7th largest county in Montana. The 2010 Population was 63,577 and has seen a growth of 13.03% since this time.

Note: 2021 and 2022 data is projected
Year Population Growth Annual Growth Rate
18705,0400.00%
18806,5211,48129.38%
189019,14512,624193.59%
190019,171260.14%
191021,8532,68213.99%
192018,660-3,193-14.61%
193018,224-436-2.34%
194022,1313,90721.44%
195024,5402,40910.89%
196028,0063,46614.12%
197033,2815,27518.84%
198043,0399,75829.32%
199047,4954,45610.35%
201063,57716,08233.86%
201164,2726951.09%
201264,7364640.72%
201365,2344980.77%
201465,7034690.72%
201566,2255220.79%
201666,8946691.01%
201767,8509561.43%
201868,6227721.14%
201969,4328101.18%
202070,2428101.17%
202171,0528101.15%
202271,8628101.14%
map placeholder

Lewis and Clark County, Montana Population Growth

Population by Race

Race Population Percentage
White64,04093.20%
Black or African American2330.34%
American Indian and Alaska Native9141.33%
Asian4430.64%
Some Other Race6370.93%
Two or More Races2,4473.56%
Loading...

Lewis and Clark County, Montana Population by Race

Lewis and Clark County, Montana Population Pyramid 2022

Loading...

Lewis and Clark County, Montana Median Age

41.3


Total

40.2


Male

42.5


Female

Lewis and Clark County, Montana Adults

There are 53,962 adults, (12,796 of whom are seniors) in Lewis and Clark County, Montana.

Lewis and Clark County, Montana Age Dependency

Age Dependency Ratio

31.1

Old Age Dependency Ratio

35.8

Child Dependency Ratio

Lewis and Clark County, Montana Sex Ratio

Female

34,705

50.51%

Male

34,009

49.49%

Lewis and Clark County, Montana Population by Age

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

map placeholder

Lewis and Clark County, Montana Household Types

Type Owner Renter
Married89.1%10.9%
All71.8%28.2%
Female62.3%37.7%
Male54.6%45.4%
Non Family53.8%46.2%

71.8%

Rate of Home Ownership

Lewis and Clark County, Montana Households and Families

Type Count Average Size Owned
All28,5022.3571.8
Married13,9803.0189.1
Male9883.1454.6
Female2,1253.2762.3
Non Family11,4091.2953.8

2.98

Average Family Size

2.35

Average Household Size

Loading...

Lewis and Clark County, Montana Households by Type

Loading...
Education Attained Count Percentage
Less Than 9th Grade5501.14%
9th to 12th Grade1,5573.22%
High School Graduate11,27423.31%
Some College10,01220.70%
Associates Degree4,4259.15%
Bachelors Degree12,78926.44%
Graduate Degree7,76316.05%
Loading...

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

Lewis and Clark County, Montana Educational Attainment by Race

Loading...
Race Total High School Bachelors
Asian374323203
White44,82643,03419,363
2+ Races1,1481,090409
Hispanic1,1481,012349
Black13211535
Native American624550154
Other Race36027574

The highest rate of high school graduation is among white people with a rate of 96.00%.

The highest rate of bachelors degrees is among asian people with a rate of 54.28%.

Lewis and Clark County, Montana Educational Attainment by Race

Loading...
Name Average Male Female
Overall$41,631$48,281$36,594
Less Than 9th Grade$23,092$20,885$30,302
High School Graduate$28,795$32,865$25,285
Some College$36,568$42,862$30,711
Bachelors Degree$48,834$55,126$41,286
Graduate Degree$67,109$72,389$60,665

$41,631

Average Earnings

$48,281

Average Male

$36,594

Average Female

Lewis and Clark County, Montana Earnings by Educational Attainment

Lewis and Clark County, Montana Language by Age

Loading...

Lewis and Clark County, Montana Language

96.72% of Lewis and Clark County, Montana residents speak only English, while 3.28% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 1.55% of the population.

Lewis and Clark County, Montana Language

Lewis and Clark County, Montana Poverty by Race

Loading...
Name Total In Poverty Poverty Rate
Black2169543.98%
Hispanic2,29848020.89%
Native8539811.49%
Multiple2,3932349.78%
White60,9105,4929.02%
Asian42720.47%
Other87NaN%

9.48%

Overall Poverty Rate

9.59%

Male Poverty Rate

9.37%

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 43.98% below the poverty level.

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

The poverty rate among those that worked full-time for the past 12 months was 1.96%. Among those working part-time, it was 12.50%, and for those that did not work, the poverty rate was 17.16%.

Lewis and Clark County, Montana Poverty

Loading...
Name Poverty
Less Than 9th Grade30.89%
High School15.58%
Some College6.38%
Bachelors or Greater3.30%

Lewis and Clark County, Montana Poverty Rate by Education

Loading...
Rate Poverty
Male Employed5.05%
Male Unemployed17.62%
Female Employed4.90%
Female Unemployed39.86%

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

Lewis and Clark County, Montana Income by Household Type

Loading...
Name Median Mean
Households$66,062$85,720
Families$87,795$106,769
Married Families$97,298$116,618
Non Families$39,642$52,088
Loading...

Income by Household Type

Lewis and Clark County, Montana Marital Status

map placeholder

Marriage Rates

51.8%

Overall Marriage Rate

52.5%

Male Marriage Rate

51.1%

Female Marriage Rate

Lewis and Clark County, Montana Married by Age and Sex

Loading...

Lewis and Clark County, Montana Marriage

The age group where males are most likely to be married is 55-64, while the female age group most likely to be married is 45-54.

Lewis and Clark County, Montana Marital Status by Race

map placeholder

Lewis and Clark County, Montana Marital Status

Loading...

6,455

Number of Veterans

Male Veterans

Female Veterans

War Veterans
Second Gulf War1,813
First Gulf War1,456
Vietnam2,212
Korea242
World War II129

Lewis and Clark County, Montana Veterans by War

Loading...
Age Group Veterans
18 to 34716
35 to 541,724
55 to 641,180
65 to 741,696
75+1,139

Lewis and Clark County, Montana Veterans by Age

Loading...
Name Veterans % of Total
White5,99611.89%
Black2012.74%
Native American13918.34%
Asian5816.29%
Other Race122.73%
2+ Races23014.91%
Hispanic19513.13%

Lewis and Clark County, Montana Veterans by Race

Lewis and Clark County, Montana Veterans by Education

Loading...

9.44%

Veteran Poverty Rate

27.96%

Veteran Disability Rate

Lewis and Clark County, Montana Veterans by Education

Loading...

66.8%

Labor Force Participation

64%

Employment Rate

3.5%

Unemployment Rate

Lewis and Clark County, Montana Employment by Age

Loading...

Lewis and Clark County, Montana Employment by Race

Loading...

Lewis and Clark County, Montana Employment by Education

Origin of Non-Citizens

Loading...

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

Origin of Naturalized Citizens

Loading...

54.17%

Born in Lewis and Clark County, Montana

98.48%

Native Born

1.52%

Foreign Born

0.58%

Non Citizen

0.94%

Naturalized

Place of Birth

98.48% of Lewis and Clark County, Montana residents were born in the United States, with 54.17% having been born in Montana. 0.58% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Europe.

Lewis and Clark County, Montana Place of Birth

  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

Sources