COUNTY · 1990 CENSUS

Lewis and Clark County

Montana · 47,495 residents · 3,458.381 sq mi

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The short version

Lewis and Clark County has lower-than-average household income, with a median household income of $26,409. Population has declined 15% since 2000. Median home value is $61,900. 28% of adults hold a bachelor's degree, well above the US average, yet household income trails the national figure — a profile common to graduate-student tracts and academic hubs.

At a glance

Lower income

below the US median

US median: $30,130

Mid-age

median age 34.0

US median: 33.0

More educated

28% hold a bachelor's degree

US average: 20%

More affordable

home values down 23%, inflation adjusted

US median home: $93,722

Section 01

Population & growth

Total population

47,495

−15%vs 2000

vs 55,716 in 2000

1990 – 2025

Population density

14 / sq mi

−15%vs 2000

vs 16 / sq mi in 2000

US average: 221

Median age

34.0

−11%vs 2000

vs 38.0 in 2000

US average: 33.0

Population, 1990 – 2024

202473K

Section 02

Income & economy

Median household income

$26,409

−7%inflation adjusted, since 2000

vs $37,360 in 2000

US average: $30,130

1990 – 2024

Per capita income

$12,342

−34%vs 2000

vs $18,763 in 2000

US average: $14,340

Poverty rate

11.8%

+0.9 ptsvs 2000

vs 10.9% in 2000

US average: 13.2%

Section 03

Housing

Median home value

$61,900

−23%inflation adjusted, since 2000

vs $105,800 in 2000

US average: $93,722

1990 – 2024

Median gross rent

$329

−5%inflation adjusted, since 2000

vs $457 in 2000

US average: $450

Owner-occupied

68.5%

−1.6 ptsvs 2000

vs 70.1% in 2000

31.5% rent

Afford Score

2.3

−17%vs 2000

vs 2.8 in 2000

1990 – 2024

RELATED:See current rent listings in Lewis and Clark County on RentDataNow

Section 04

Race & ethnicity

2000

White, non-Hispanic94.4%(52,571)

Black0.2%(104)

Hispanic / Latino1.5%(843)

Asian0.5%(282)

Other0%

Diversity Score5.6%(3,126)

1990

White, non-Hispanic96.7%(45,912)

Black0.1%(49)

Hispanic / Latino1.1%(525)

Asian0.7%(331)

Other2.5%(1,203)

Diversity Score10.6%(5,051)

Diversity Score

+90%vs 2000

vs 6 in 2000

1990 – 2024

Section 05

Education

Bachelor's degree or higher

27.8%

−3.7 ptsvs 2000

vs 31.6% in 2000

US average: 20.3%

High school or higher

87.4%

−3.9 ptsvs 2000

vs 91.4% in 2000

US average: 75.2%

Graduate degree

9.0%

−1.4 ptsvs 2000

vs 10.3% in 2000

US average: 7.1%

Section 06

Commute & transportation

Average commute

15.7 min

+43%vs 2000

vs 11.0 min in 2000

US average: 21.9

Section 07

Work & employment

No data for the years selected.

Section 08

People & community

No data for the years selected.

Drill deeper

Places similar to Lewis and Clark County

Head to head

Compare Lewis and Clark County to nearby counties

LEWIS AND CLARK COUNTY VS

Powell County

Income$66,923+153%

Home value$306,500+395%

Population7,157−90%

SEE FULL COMPARISON →

LEWIS AND CLARK COUNTY VS

Teton County

Income$70,430+167%

Home value$264,000+326%

Population6,496−91%

SEE FULL COMPARISON →

LEWIS AND CLARK COUNTY VS

Cascade County

Income$67,690+156%

Home value$265,300+329%

Population85,029+13%

SEE FULL COMPARISON →

LEWIS AND CLARK COUNTY VS

Broadwater County

Income$70,374+166%

Home value$426,600+589%

Population8,493−89%

SEE FULL COMPARISON →

Frequently asked

How many people live in Lewis and Clark County, Montana?

Lewis and Clark County, Montana has about 47,495 residents according to the 1990 Census.

What is the median household income in Lewis and Clark County, Montana?

The typical household in Lewis and Clark County, Montana earns about $26,409 a year. Half of households make more than that, and half make less.

Is Lewis and Clark County, Montana expensive?

In Lewis and Clark County, Montana, the median home is worth about $61,900, and the typical rent is about $329 a month.

How educated are people in Lewis and Clark County, Montana?

About 27.8% of adults age 25 and over in Lewis and Clark County, Montana hold a bachelor's degree or higher.

What is the poverty rate in Lewis and Clark County, Montana?

About 11.8% of people in Lewis and Clark County, Montana live below the federal poverty line.

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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

How we source and harmonize this data →