Post Falls is a city in Kootenai County, Idaho, home to about 43,391 people across 15 square miles. Its ZIP code is 83854.
Homes sold for a median of $291 per square foot in the three months ending August 2026, a seller’s market.
Mostly Post Falls; also Hauser and State Line
Each card is that ZIP code’s whole market, including any part outside Post Falls. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Post Falls’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Spokane International Airport (GEG)29 miles away |
|---|---|
| Nearest city of 250,000+ | Seattle, WA252 miles away |
Straight-line distances from the center of Post Falls; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Post Falls had 38,485 residents in the 2020 census, up 123% since 2000.
It’s the 9th largest of 232 towns in Idaho by population.
Kootenai County grew from 10,216 residents in 1900 to 171,362 in 2020.
Kootenai County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 83°F in summer, and winter lows average 26°F. About 25.3 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Coeur D'Alene, ID weather station (7 miles away).
64,571 jobs at 6,221 businesses in Kootenai County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
421 doctors and other health care providers list an office in Post Falls.
Nearest hospitals
Providers with an office here
| Primary care doctors | 38 |
|---|---|
| Specialist doctors | 62 |
| Dentists | 39 |
| Nurse practitioners and physician assistants | 92 |
| Mental health providers | 81 |
| Physical and occupational therapists | 73 |
| Optometrists | 6 |
| Chiropractors | 30 |
| Pharmacies | 10 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Parks (25 nearby)
Grocery stores (5 nearby)
Libraries (1 nearby)
Museums (1 nearby)
Theaters and performance venues (1 nearby)
Counts are within about 2.5 miles of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Established in 1871.
Source: Wikidata (wikidata.org), the free knowledge base; people are listed by place of birth.
Public schools here are run by Post Falls District, Kootenai Classical Academy Inc, Elevate Academy North Llc. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Greensferry Elementary SchoolPost Falls | Pre-K–5 | 406 | Public | 1.4 mi |
| Kootenai Classical AcademyPost Falls | Pre-K–9 | 528 | Charter | 3.1 mi |
| Mullan Trail Elementary SchoolPost Falls | Pre-K–5 | 342 | Public | 0.8 mi |
| West Ridge Elementary SchoolPost Falls | Pre-K–5 | 425 | Public | 1.7 mi |
| Prairie View ElementaryPost Falls | K–5 | 349 | Public | 1.1 mi |
| Treaty Rock ElementaryPost Falls | K–5 | 379 | Public | 2.7 mi |
| Elevate Academy NorthPost Falls | 6–12 | 304 | Charter, Alternative Education | 2.2 mi |
| River City Middle SchoolPost Falls | 6–8 | 550 | Public | 0.9 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Genesis Prep AcademyPost Falls | Pre-K–12 | 466 | Christian (no specific denomination) | 1.6 mi |
| Genesis Preparatory AcademyPost Falls | Pre-K–12 | 541 | Christian (no specific denomination) | 1.6 mi |
| Pine Grove AcademyPost Falls | Pre-K–8 | 102 | Latter Day Saints | 3.7 mi |
| Circle of Care MontessoriPost Falls | K | 14 | Nonsectarian | 1.8 mi |
| Immaculate Conception AcademyPost Falls | K–12 | 188 | Roman Catholic | 0.6 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools; Private School Universe Survey (2023-2024) for private schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with Hauser and State Line.
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.