Plain

Residential delivery area · Idaho

ZIP Code 83854: Post Falls, ID

ZIP code 83854 uses the postal name Post Falls, Idaho and lies entirely in Kootenai County (Census 2020 ZIP-county file). About 55,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $82,742 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Post Falls (20%), Hauser (1%) and State Line (under 1%), and under 1% in smaller places; 78% is outside any Census place.

  • ACS2020-24
  • Census2020
  • FHFA2025
  • ZBP2023
  • IRS2022
8national area: Idaho, Arizona, Colorado, New Mexico, Nevada and 2 more
838sectional center: Spokane, WA (SCF 990)
54delivery area within it
Town
Post Falls · its only residential ZIP
Census places
Post Falls (20%); Hauser (1%); State Line (under 1%)
Metro area
Coeur d'Alene, ID
House district
ID-1 119th Congress
State
Idaho
Time zone
Pacific
Land area
77.6 sq mi · 707 people per sq mi
PO Box ZIPs
83877 also use the name Post Falls

Where is ZIP code 83854?

83854 centers on 47.726°, -116.976° and covers 77.6 square miles of land plus 1.9 of water. It borders 6 ZIP codes: 99025, 99019, 83815, 83858, 83814, 83835.

83814 · Coeur D Alene83815 · Coeur D Alene83835 · Hayden83858 · Rathdrum99019 · Liberty Lake99025 · Newman Lake83854 · Post Falls (this ZIP)8385483814838358385899025990198381583814 · Coeur D Alene83815 · Coeur D Alene83835 · Hayden83858 · Rathdrum99019 · Liberty Lake99025 · Newman Lake83854 · Post Falls (this ZIP)8385483814838358385899025990198381583814 · Coeur D Alene83815 · Coeur D Alene83835 · Hayden83858 · Rathdrum99019 · Liberty Lake99025 · Newman Lake83854 · Post Falls (this ZIP)83854838148383583858990259901983815
Shaded by median household income, in national fifths (ACS 2020-2024); 83854 outlined. Census 2020 ZCTA boundaries. <$54.1k$98.1k+no figure

The map draws ZIP code areas only. For the streets inside 83854, open its center on OpenStreetMap.

Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).

How does 83854 compare with the rest of Kootenai County?

Rank of 83854 among the residential ZIP codes of its town, county and state (1 = the most; income and home value among ZIP codes of 1,000+ people living in households)
Measure83854In Kootenai CountyIn ID
People (ACS 2020-2024)54,8511st of 136th of 279
Median household income$83k3rd of 938th of 126
Median home value$490k9th of 1130th of 138

Its median household income is higher than in 65% of U.S. residential ZIP codes, and it is denser than 75% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).

How many people live in 83854?

The 2020 Census counted 49,040 people in 83854; the ACS, which samples households over 2020-2024, estimates 54,851. Between the 2010 and 2020 censuses its population grew 31.7% (its boundary stayed at least 90% the same).

People, ACS 2020-2024
54,851
2020 Census count
49,040+31.7% since 2010 (37,245)
Households
20,056
Median age
36.9

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).

Who lives in 83854?

Of the 54,851 people the ACS estimates in 83854, 25.6% are under 18 and 16.0% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (83.6%).

  • Under 1825.6%
  • 18 to 6458.4%
  • 65 and older16.0%
Age of the people of 83854 (ACS 2020-2024, B01001)
  • White, not Hispanic83.6%
  • Other or two or more8.8%
  • Hispanic or Latino6.9%
  • Asian, not Hispanic0.5%
  • Black, not Hispanic0.3%
Race and Hispanic origin in 83854 (ACS 2020-2024, B03002); each person counted once

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.

What do households in 83854 earn?

Median household income is $82,742 (ACS 2020-2024), the 3rd highest of the 9 ranked ZIP codes in Kootenai County. It rose from $67,762 in 2015-2019 (in 2024 dollars), a change larger than the surveys' margins of error.

Median household income
$82,742
Income per person
$35,865
Below the poverty line
11.2%
Unemployed (of the labor force)
3.8%
Adults 25+ with a bachelor's degree
25.3%
Adjusted gross income per tax return, 2022
$77,77524,400 returns; wages 66% of AGI (IRS)

Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).

What are homes worth in 83854?

FHFA's house price index for 83854, built from repeat sales and appraisals of the same homes, rose 156% from 2015 to 2025 and rose 54% from 2020 to 2025, and moved +1.2% in 2025.

Median home value (owners' estimate)
$489,800
Median gross rent
$1,495
Homes owned by their occupants
67.9%
Housing units
21,156
0 200 400 600 800 198619902000201020202025 0 200 400 600 800 198619902000201020202025 0 200 400 600 800 198619902000201020202025
Index = 100 in 1986, the first year FHFA reports for 83854; 2025: 782.1. Annual, not seasonally adjusted; FHFA calls its ZIP-level indexes developmental.

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.

What businesses are in 83854?

1,485 business establishments had a location in this ZIP code in 2023, 373 more than in 2018; the most are in construction (ZIP Code Business Patterns).

  • Construction303
  • Health care and social assistance160
  • Retail trade158
  • Professional, scientific, and technical services148
  • Other services (except public administration)114
  • Accommodation and food services100

Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).

Which ZIP codes are next to 83854?

ZIP codes that share a boundary with 83854, then the nearest by center
ZIPTownPeopleHousehold incomeDistance
99025Newman Lake, WA5,668$119k6.6 mi
99019Liberty Lake, WA12,447$120k7.7 mi
83815Coeur D Alene41,405$78k8.7 mi
83858Rathdrum20,137$95k9.5 mi
83814Coeur D Alene26,059$75k15.1 mi
83835Hayden24,238$91k15.5 mi
99027Otis Orchards, WA5,992$75k7.1 mi (near)
99016Greenacres, WA21,615$104k11.2 mi (near)
99216Spokane, WA28,578$74k11.5 mi (near)
99037Veradale, WA16,522$88k12.1 mi (near)

Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.

Which other ZIP codes use the name Post Falls?

1 more ZIP code carries the postal name Post Falls, ID without a residential delivery area: PO boxes at the post office, or a single organization with its own ZIP code. The Census Bureau publishes no figures for it.

ZIP codes named Post Falls without a residential area (GeoNames postal codes)
ZIPCounty
83877Kootenai County

Source: GeoNames postal codes (CC BY 4.0), downloaded 2026-10-09; a ZIP code with no Census ZCTA has no residential delivery area.