Home > ID > Kootenai County > Post Falls > Zip 83854

Zip Code 83854 — Post Falls, ID

ZIP Code 83854 is associated with Post Falls, ID, in Kootenai County. The listed population estimate is 54,851; estimated density is 273.0 people per square mile. Among records with population estimates, it ranks #1 of 11 in Kootenai County and #6 of 276 in ID.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (47.726700, -116.975110)

Data MetricLocal Statistic
Postal / Zip Code83854
Primary CityPost Falls
State / ProvinceID
CountyKootenai
Total Population54,851
Population Density273.0 people/sq mi
TimezoneAmerica/Los_Angeles

How 83854 Compares

MetricZIP 83854Kootenai County recordsID records
Population estimate54,851184,228 (sum)1,933,906 (sum)
Population Density273.0 /sq mi----
County population rank#1 of 11----
State population rank#6 of 276----

Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.

Explore More ZIP Codes

Nearby ZIP Codes in ID

ZIP CodeCityDistancePopulation estimate
ZIP 83815Coeur D Alene8.7 mi41,405
ZIP 83858Rathdrum9.3 mi20,137
ZIP 83814Coeur D Alene11.8 mi26,059
ZIP 83835Hayden15.0 mi24,238
ZIP 83869Spirit Lake18.0 mi5,504

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →