What is the largest city in Cascade County, MT?

Great Falls is the largest city or town in Cascade County, with about 60,329 residents.

How many ZIP codes are in Cascade County?

Cascade County includes 15 ZIP Code Tabulation Areas, including 59401, 59404, 59405, 59412, 59414.

What is the population of Cascade County, MT?

About 84,606 people live in Cascade County, based on American Community Survey 5-year estimates.

What counties border Cascade County?

Cascade County borders Lewis and Clark County, Teton County, Chouteau County, Judith Basin County, Meagher County.

Cascade County, MT: Cities, ZIP Codes & Local Data

Population

84,606

Land area

2,698sq mi

People per sq mi

31

ZIP codes

15

Cascade County at a glance

Cascade County is about 4.1 times as dense as Montana as a whole.
It is the 5th most populous of 56 counties in Montana.
Households here earn a median of $67,690 a year, 7% less than the Montana figure of $72,509.
A typical owner-occupied home is valued at $265,300 (29% below Montana) and median rent is $939 a month.
The biggest population centers are Great Falls (60,329), Malmstrom AFB (4,302) and Sun Prairie (1,171).

Local data for Cascade County, MT

Counts from official public data

Housing and community stats

Cascade County, MT, American Community Survey 2020-2024

Full profile

Median household income

$67,690

Poverty rate

13.1%

Median home value

$265,300

Prices +2.9% in a year

Median rent

$939/mo

Homeownership

68.5%

Bachelor's or higher

28.4%

Median age

38.6

Average commute

16.5 min

Largest reported origins and ancestries: German Americans (18,549), Irish Americans (10,801), Norwegian Americans (6,512).

Home values and rents Income, education and commute

Economy and federal money

Jobs, income, federal spending and pandemic loans

Details

Unemployment rate

3.3%

Aug 2026, -0.1 pts in a year

Average annual pay

$58,416

36,192 jobs, 2025

Income per person

$63,865

BEA, 2024

Federal spending

$856M

FY 2026, $10,140 per person

PPP loans

$154M

2,304 loans, 20,847 jobs reported

Campaign donations

$485K

Itemized, 2026 cycle

Economy Federal spending PPP loans

How people get to work

Cascade County, MT, workers 16 and older. American Community Survey 5-year estimates

Drove alone77.4%
Carpooled10.3%
Public transit0.7%
Walked2.7%
Bicycle0.7%
Taxi, ride-hailing, motorcycle or other0.8%
Worked from home7.4%

Average one-way commute: 16.5 minutes for people who do not work from home.

Environment and hazard risk

Cascade County, MT, from FEMA, NOAA and EPA

Full report

Natural hazard risk

Relatively Moderate

Top: winter weather

Storm events since 1996

663

Most often thunderstorm wind

Flood insurance policies

246

0.7% of homes, county

July high / Jan low

83° / 16°F

14.6 inches of rain a year

Hazards, floods and storm history Check a flood zone 25 historic places

Health statistics

Share of adults in Cascade County, MT, CDC PLACES estimates

All 40 measures

Obesity

35.3%

U.S. 33.3% +2.0 pts

Diabetes

10.4%

U.S. 12.1% -1.7 pts

Smoking

14.4%

U.S. 12.8% +1.6 pts

Uninsured (18-64)

10.0%

U.S. 11.1% -1.1 pts

Cities, towns and ZIP codes in Cascade County

Population shown

Frequently asked questions

What is the largest city in Cascade County, MT?: Great Falls is the largest city or town in Cascade County, with about 60,329 residents.
How many ZIP codes are in Cascade County?: Cascade County includes 15 ZIP Code Tabulation Areas, including 59401, 59404, 59405, 59412, 59414.
What is the population of Cascade County, MT?: About 84,606 people live in Cascade County, based on American Community Survey 5-year estimates.
What counties border Cascade County?: Cascade County borders Lewis and Clark County, Teton County, Chouteau County, Judith Basin County, Meagher County.