Lewis and Clark County, Montana

18 cities & places have their primary county here.

Population: 72,580
Median household income: $74,543
Median home value: $358,200

Lewis and Clark County, Montana counts 72,580 residents. 18 cities and places have their primary county here. At $74,543, its median household income sits above Montana's $69,922.

Between 2019 and 2023, Lewis and Clark County's population grew 7.0% from 67,805 to 72,580, while its median household income rose 13.3% from $65,791 to $74,543.

69.2% of workers drive to work alone. 66.3% of homes are single-family detached houses.

Demographics

ACS 2019–2023

Population: 72,580
Median age: 41.3 yrs
Median household income: $74,543
Median home value: $358,200
Median gross rent: $1,062
Housing units: 33,837
Homeownership rate: 69.7%
Bachelor's degree or higher: 42.8%
Unemployment rate: 3.5%

Trends

ACS 5-year · 2019–2023

Population

67,80572,580

Median household income

$65,791$74,543

Median home value

$243,000$358,200

Median gross rent

$833$1,062

Year	Population	Median household income	Median home value	Median gross rent
2019	67,805	$65,791	$243,000	$833
2020	68,714	$66,062	$263,900	$863
2021	70,340	$66,486	$280,600	$905
2022	71,487	$71,967	$332,000	$1,006
2023	72,580	$74,543	$358,200	$1,062

Each year is a US Census Bureau ACS 5-year estimate ending that year.

Age distribution

Under 55.4%

5 to 1716.0%

18 to 247.6%

25 to 3412.1%

35 to 4413.2%

45 to 5411.7%

55 to 6414.1%

65 to 7412.6%

75 and over7.3%

	Count	Share
Under 5	3,941	5.4%
5 to 17	11,601	16.0%
18 to 24	5,519	7.6%
25 to 34	8,799	12.1%
35 to 44	9,549	13.2%
45 to 54	8,465	11.7%
55 to 64	10,254	14.1%
65 to 74	9,157	12.6%
75 and over	5,295	7.3%

Race & ethnicity

	Count	Share
White (non-Hispanic)	64,745	89.2%
Black or African American	401	0.6%
American Indian & Alaska Native	640	0.9%
Asian	466	0.6%
Native Hawaiian & Pacific Islander	0	0.0%
Some other race	237	0.3%
Two or more races	3,261	4.5%
Hispanic or Latino (any race)	2,830	3.9%

Educational attainment (age 25+)

No high school diploma5.1%

High school graduate23.5%

Some college or associate's28.5%

Bachelor's degree27.9%

Graduate or professional degree15.0%

	Count	Share
No high school diploma	2,653	5.1%
High school graduate	12,105	23.5%
Some college or associate's	14,705	28.5%
Bachelor's degree	14,352	27.9%
Graduate or professional degree	7,704	15.0%

Commute to work

Mean travel time to work: 18 min

Drove alone69.2%

Carpooled10.7%

Public transit0.2%

Walked4.8%

Bicycle0.9%

Worked from home12.9%

Other means1.4%

How workers get to work

	Count	Share
Drove alone	24,720	69.2%
Carpooled	3,808	10.7%
Public transit	67	0.2%
Walked	1,726	4.8%
Bicycle	305	0.9%
Worked from home	4,614	12.9%
Other means	500	1.4%

Travel time

	Count	Share
Under 15 min	13,563	43.6%
15 to 29 min	13,246	42.6%
30 to 44 min	2,732	8.8%
45 to 59 min	509	1.6%
60+ min	1,076	3.5%

Households

Average household size: 2.31
Poverty rate: 8.7% (6,209 of 71,230)

	Count	Share
Family households	18,199	59.4%
Nonfamily households	12,456	40.6%

Housing

Median year structure built: 1982

Occupancy

	Count	Share
Occupied	30,655	90.6%
Vacant	3,182	9.4%

Tenure (of occupied units)

	Count	Share
Owner-occupied	21,363	69.7%
Renter-occupied	9,292	30.3%

1-unit, detached66.3%

1-unit, attached3.7%

2 to 4 units11.6%

5 to 19 units4.3%

20 or more units4.2%

Mobile home & other9.9%

Units in structure

	Count	Share
1-unit, detached	22,448	66.3%
1-unit, attached	1,248	3.7%
2 to 4 units	3,928	11.6%
5 to 19 units	1,460	4.3%
20 or more units	1,409	4.2%
Mobile home & other	3,344	9.9%

Geography

County GEOID: 30049
State: Montana
Land area: 3,458 sq mi
Water area: 39 sq mi
Center point: 47.1221, -112.3829