🇺🇸 United States ZIP Code

STANDARD

59901

Kalispell

ZIP Code 59901 is a standard zip code serving Kalispell, Kalispell, Montana (MT), in Flathead County, United States. It has an estimated population of 49,693 with a median household income of $44,982. The area falls within the America/Denver timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Montana (MT)
County: Flathead
City: Kalispell
Timezone: America/Denver

Coordinates

Latitude: 48.202800
Longitude: -114.303900

Geographic Details

Land Area: 452.11 mi²
Water Area: 12.68 mi²
Population Density: 110.0 people per mi² (55th percentile)
Bounding Box: 48.424367°N, 48.035656°S, -113.920108°E, -114.776855°W

With 49,693 residents spread across 452.11 square miles, this area has a population density of 110.0 people per square mile.

Demographics

49,693

Population

95th percentile

$44,982

Median Income

40th percentile

$213,000

Median Home Value

75th percentile

452.11 mi²

Land Area

The median household income in 59901 is $44,982, and the median home value is $213,000.

Housing

22,002

Total Units

20,113

Occupied Units

91.4%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in Kalispell, MT.

59903

Kalispell

59904

Kalispell

Similar ZIP Codes in Montana

ZIP codes with similar median household income in Montana.

59870

Stevensville

$39,759

59522

Chester

$43,036

59725

Dillon

$42,944

59920

Kila

$45,795

59221

Fairview

$49,727

59829

Darby

$39,295

59301

Miles City

$43,698

59215

Circle

$41,379

Frequently Asked Questions

What information is available for each ZIP code?

Each ZIP code page shows city, state, county, geographic coordinates, timezone, population, median household income, median home value, housing units, land area, population density, commute time, educational attainment, area codes, and ZIP code type (Standard, PO Box, or Unique).

What are the different types of ZIP codes?

There are three types of ZIP codes: Standard (residential and commercial delivery areas), PO Box (assigned to post office box sections), and Unique (assigned to a single high-volume address like a government agency or large company). Standard ZIP codes are the most common.

How often is ZIP code data updated?

ZIP code assignments are updated quarterly by the USPS. Demographic data comes from the US Census Bureau's American Community Survey (ACS), which releases new 5-year estimates annually. ZipFYI updates its data to reflect the latest available information.

What is population density and why does it matter?

Population density measures the number of people per square mile in a ZIP code area. It helps identify urban vs. rural areas, affects real estate values, impacts service availability, and is used in market analysis. Dense urban ZIP codes may have 50,000+ people per square mile.

How are ZIP code boundaries determined?

ZIP code boundaries are determined by the USPS based on mail delivery routes, not political or geographic boundaries. They follow carrier routes and may cross city, county, or even state lines. Boundaries can change when the USPS reorganizes delivery operations.

What does median household income tell me about a ZIP code?

Median household income is the middle value when all household incomes in a ZIP code are sorted. Half of households earn more and half earn less. It is a better indicator of typical earnings than average income, which can be skewed by very high or very low outliers.