🇺🇸 United States ZIP Code

STANDARD

83854

Post Falls

ZIP Code 83854 is a standard zip code serving Post Falls, Post Falls, Idaho (ID), in Kootenai County, United States. It has an estimated population of 37,245 with a median household income of $50,283. The area falls within the America/Los_Angeles timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Idaho (ID)
County: Kootenai
City: Post Falls
Timezone: America/Los_Angeles

Coordinates

Latitude: 47.720500
Longitude: -116.935300

Geographic Details

Land Area: 75.10 mi²
Water Area: 1.88 mi²
Population Density: 496.0 people per mi² (70th percentile)
Bounding Box: 47.861478°N, 47.571424°S, -116.850307°E, -117.042657°W

With 37,245 residents spread across 75.10 square miles, this area has a population density of 496.0 people per square mile.

Demographics

37,245

Population

90th percentile

$50,283

Median Income

55th percentile

$171,300

Median Home Value

65th percentile

75.10 mi²

Land Area

The median household income in 83854 is $50,283, and the median home value is $171,300.

Housing

14,988

Total Units

13,842

Occupied Units

92.4%

Occupancy Rate

Nearby ZIP Codes

Similar ZIP Codes in Idaho

ZIP codes with similar median household income in Idaho.

83263

Preston

$44,684

83642

Meridian

$57,089

83442

Rigby

$54,145

83860

Sagle

$44,320

83687

Nampa

$42,899

83815

Coeur d'Alene

$44,774

83644

Middleton

$51,792

83703

Boise

$49,388

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.