Zip Code 83854
Post Falls, Idaho — Kootenai County
📍 ZIP code 83854 is in Post Falls, Kootenai County, Idaho.
ZIP code 83854 is located in Post Falls, Kootenai County, Idaho. It is a zip code in the Mountain (MST/MDT) Time Zone with an estimated population of 53,152. The area code for ZIP code 83854 is 208.
Quick Answer
Zip code 83854 is in Post Falls, Idaho (Kootenai County). It has a population of 53,152, median household income of $72,820, and median home value of $433,700.
Population
53,152
Income
$72,820
Home Value
$433,700
Climate
83°F / 26°F
About Zip Code 83854
Zip code 83854 is located in Post Falls, Idaho, within Kootenai County. Home to approximately 53,152 residents, this area sits at an elevation of 2149 ft and falls within the Mountain (MST/MDT) timezone. The local area code is 208.
The median household income is $72,820 per year, which is above the national median of $70,784. Homes in this zip code have a median value of $433,700, and the cost of living index is 117 (17% above the national average of 100).
Summers average a high of 83°F while winters drop to 26°F. The area receives about 25 in of rain and 50 in of snow annually. The zip code covers 75 square miles of land area and 1.9 square miles of water.
Key Statistics
53,152
$72,820
$433,700
Mountain (MST/MDT)
208
2149 ft
75 sq mi
36
20,440
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Compare With Nearby Zip Codes
| Metric | 83854 | 99025 | 99027 | 99019 | 83815 | 83858 |
|---|---|---|---|---|---|---|
| City | Post Falls, ID | Newman Lake, WA | Otis Orchards, WA | Liberty Lake, WA | Coeur D Alene, ID | Rathdrum, ID |
| Population | 53,152 | 5,846 | 5,878 | 12,092 | 39,993 | 19,315 |
| Median Income | $72,820 | $117,283 | $70,784 | $106,780 | $77,139 | $93,006 |
| Home Value | $433,700 | $458,100 | $368,400 | $558,100 | $472,300 | $452,700 |
| Cost of Living | 117 | 147 | 109 | 157 | 125 | 130 |
| Median Age | 36 | 45.3 | 53.7 | 39.6 | 40.3 | 39.8 |
Cost of Living
100 = National Average. Post Falls's cost of living is 17% above the national average.
vs. State Avg
Above
Affordability
Moderate
Income-to-Home
6.0x
Demographics
Zip code 83854 has a population of 53,152 people with a median age of 36. There are 20,440 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Post Falls (83854) population trend from 2010 to 2024
↑ 3.9%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
83°F
26°F
25 in
50 in
Post Falls experiences warm summers with average highs around 83°F. Winters are cool with lows averaging 26°F. With 50 in of annual snowfall, residents should be prepared for significant winter weather.
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Housing & Economy
Median Home Value
$433,700
Median Household Income
$72,820
With 20,440 housing units across 75 square miles, 83854 has a housing density of 273 units per square mile. The home price-to-income ratio is 6.0x.
Location & Geography
Latitude
47.7199°
Longitude
-116.9699°
Land Area
75 sq mi
Water Area
1.9 sq mi
Nearby Zip Codes
Zip codes closest to 83854 (Post Falls, ID) with distances:
ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 83854's $72,820. A way to compare Post Falls to economically similar communities elsewhere in the country.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
ZIP Codes with Similar Demographics
The five U.S. ZIP codes whose racial and ethnic composition most closely matches 83854 (Post Falls, ID). Similarity is measured by cosine distance on the five-category ACS demographic vector.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
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People Also Ask
What zip code is Post Falls, Idaho?
Post Falls, Idaho uses zip code 83854.
What county is zip code 83854 in?
Zip code 83854 is located in Kootenai County, Idaho.
What is the population of zip code 83854?
The population of zip code 83854 is 53,152 with a median age of 36.
Is 83854 in Post Falls, Idaho?
Yes, zip code 83854 is in Post Falls, Kootenai County, Idaho. The area code is 208.
Frequently Asked Questions
What city is zip code 83854 in?
Zip code 83854 is in Post Falls, Idaho. It is part of Kootenai County and uses the Mountain (MST/MDT) timezone.
What is zip code 83854?
Zip code 83854 is a U.S. postal code in Post Falls, Idaho (Kootenai County). It has a population of 53,152 and covers 75 square miles.
What is the population of zip code 83854?
The population of zip code 83854 (Post Falls, ID) is 53,152 with a median age of 36. There are approximately 20,440 housing units in this area.
What is the median income in zip code 83854?
The median household income in zip code 83854 (Post Falls, ID) is $72,820 per year. The cost of living index is 117 (100 = national average).
What is the average home price in zip code 83854?
The median home value in zip code 83854 (Post Falls, ID) is $433,700. The cost of living index is 117 compared to the national average of 100.
What county is zip code 83854 in?
Zip code 83854 is located in Kootenai County, Idaho. The primary city is Post Falls.
What is the area code for zip code 83854?
Zip code 83854 in Post Falls, ID uses area code 208. It is located in the Mountain (MST/MDT) timezone.
Is zip code 83854 a good place to live?
Zip code 83854 (Post Falls, ID) has a cost of living index of 117 (100 = national average), a median household income of $72,820, and median home values of $433,700. The median age is 36. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 83854?
The cost of living index for zip code 83854 (Post Falls, ID) is 117, where 100 represents the national average. This area is above the national average. Median home value: $433,700.
What schools serve zip code 83854?
Zip code 83854 in Post Falls, Idaho is served by the local school district of Kootenai County. For specific school information, check your state's department of education or GreatSchools.org.
All demographic data on this page is sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code boundary and delivery data is sourced from the United States Postal Service (USPS). Data is updated periodically and may not reflect the most current figures. Census Bureau ZIP Code Tabulation Areas (ZCTAs) may differ slightly from USPS ZIP code boundaries.
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Data Sources
- Population, income, housing, age, and demographics
- U.S. Census Bureau, American Community Survey 5-Year Estimates, 2019-2023 vintage.
- ZIP to city and county mapping
- USPS and HUD-USPS ZIP-County Crosswalk.
- Time zones and area codes
- IANA tz database and NANPA.
- Elevation
- U.S. Geological Survey National Elevation Dataset (NED), via the USGS Elevation Point Query Service. Mapped to each ZCTA centroid coordinates. Last refreshed 2026-05-19.
- Last refreshed
- 2026-05-18.