ZIP Code Tabulation Area · Montana

ZIP Code 59421: Cascade County, MT

ZIP Code 59421 (Cascade County, Montana) has an estimated 2,069 residents in 969 households. The median household income is $78,125, the median home value is $377,900 and the median gross rent is $850/mo. Figures are U.S. Census Bureau American Community Survey 2020–2024 5-year estimates for the matching ZIP Code Tabulation Area.

American Community Survey 2020–2024 5-year estimates · Updated Oct 26, 2026

Total population

2,069

Margin of error ±276

Median household income

$78,125

Margin of error ±$23,502

Median home value

$377,900

Margin of error ±$52,523

Median gross rent

$850/mo

Margin of error ±$312

Median age

53.4 yrs

Margin of error ±5.9 yrs

Mean travel time to work

28.6 min

Margin of error ±9.4 min

How ZIP 59421 compares with Montana and the U.S.

State and national figures are the Census Bureau's own estimates for those areas from the same ACS release, not averages of ZIP codes.

Median age

ZIP 5942153.4 yrsMontana40.4 yrsUnited States38.9 yrs

Median household income

ZIP 59421$78,125Montana$72,509United States$80,734

Per capita income

ZIP 59421$58,072Montana$41,711United States$44,673

Poverty rate

ZIP 594218.1%Montana11.5%United States12.5%

Unemployment rate

ZIP 594214.5%Montana3.6%United States5.2%

Bachelor's degree or higher

ZIP 5942129.2%Montana35.2%United States35.7%

Median home value

ZIP 59421$377,900Montana$375,800United States$332,700

Median gross rent

ZIP 59421$850/moMontana$1,081/moUnited States$1,413/mo

Owner-occupied homes

ZIP 5942186.2%Montana69.2%United States65.2%

Mean travel time to work

ZIP 5942128.6 minMontana19.1 minUnited States26.4 min

Worked from home

ZIP 5942115.2%Montana12.5%United States15.1%

All figures for ZIP 59421

Each estimate has a 90% margin of error: the true value is likely within that range. * marks estimates with a large margin of error (a coefficient of variation above 30%, or ±10 percentage points or more for rates).

ZIP 59421 — ACS 2020–2024 5-year estimates
Measure	ZIP 59421	Margin of error	Montana	United States
Total population	2,069	±276	1,116,875	334,922,499
Median age	53.4 yrs	±5.9 yrs	40.4 yrs	38.9 yrs
Households	969	±164	458,859	129,227,496
Median household income	$78,125	±$23,502	$72,509	$80,734
Per capita income	$58,072	±$17,012	$41,711	$44,673
Poverty rate	8.1%	±2.1 pts	11.5%	12.5%
Unemployment rate	4.5%	±3.5 pts	3.6%	5.2%
Bachelor's degree or higher	29.2%	±5.0 pts	35.2%	35.7%
Median home value	$377,900	±$52,523	$375,800	$332,700
Median gross rent	$850/mo	±$312	$1,081/mo	$1,413/mo
Owner-occupied homes	86.2%	±7.1 pts	69.2%	65.2%
Mean travel time to work	28.6 min	±9.4 min	19.1 min	26.4 min
Worked from home	15.2%	±6.3 pts	12.5%	15.1%

Race and Hispanic or Latino origin

Shares of the total population by the Census Bureau's race and Hispanic or Latino origin categories (table B03002), listed in the Census Bureau's order. People self-identify on the survey.

Population by race and Hispanic or Latino origin, ZIP 59421
Group	ZIP 59421	Montana	United States
White alone, not Hispanic or Latino	92.2%	83.6%	57.4%
Black or African American alone, not Hispanic or Latino	0.0%	0.4%	11.9%
American Indian and Alaska Native alone, not Hispanic or Latino	0.8%	5.3%	0.5%
Asian alone, not Hispanic or Latino	0.0%	0.8%	5.9%
Native Hawaiian and Other Pacific Islander alone, not Hispanic or Latino	0.0%	0.0%	0.2%
Some other race alone, not Hispanic or Latino	0.0%	0.5%	0.6%
Two or more races, not Hispanic or Latino	5.1%	4.7%	4.3%
Hispanic or Latino (of any race)	1.9%	4.6%	19.3%

Where ZIP 59421 is

State: Montana
Main county: Cascade County— also overlaps Lewis and Clark County
Largest overlapping place: Hardy (less than 1% of the ZIP's land area)
Land area: 746.58 sq mi· about 3 people per sq mi

County and place names come from the Census Bureau's 2020 ZCTA relationship files. A ZIP code's mailing city, set by the U.S. Postal Service, can differ from these names.

Other ZIP codes in Cascade County

59401 Great Falls, MT 59404 Cascade County, MT 59405 Cascade County, MT 59412 Cascade County, MT 59414 Black Eagle, MT 59443 Cascade County, MT 59463 Cascade County, MT 59465 Cascade County, MT 59472 Cascade County, MT 59477 Cascade County, MT 59480 Cascade County, MT 59483 Cascade County, MT 59485 Ulm, MT 59487 Cascade County, MT

See every ZIP code in Montana, or compare ZIP 59421 with another ZIP code.

Census figures describe residents as a group and cannot tell you about any one home or street. For a specific address, check local government and housing records.

About ZIP codes and ZCTAs: the Census Bureau publishes statistics for ZIP Code Tabulation Areas, which approximate USPS ZIP code delivery areas. Learn how they differ.

Sources

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, detailed tables B01003, B01002, B11001, B19013, B19301, B17001, B23025, B15003, B25077, B25064, B25003, B08013, B08303, B08301, B03002 — snapshot Oct 26, 2026.
U.S. Census Bureau, 2020 ZCTA5 relationship files (county and place).
Data: U.S. Census Bureau, American Community Survey 5-year estimates (detailed tables) and 2020 Census ZCTA relationship files. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau. These agencies do not endorse OpenZIP.