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zipcodes.pro — STATE/ID/COUNTY/BENEWAH

Benewah County, ID ZIP codes

Benewah County, ID has 6 ZIP codes, in 6 towns: 83861, 83851, 83830, 83870, 83824 and 83866.

The county seat is St. Maries.

ZIP codes
6
Towns
6
County seat
St. Maries
County FIPS
16009
State
Idaho
Population
10,142
Median household income
$59,794
Land area
777 sq mi

Benewah County ZIP codes by town

St. Maries (county seat)
83861

Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.

Map of Benewah County ZIP codes

838248383083851838618386683870

The ZIP codes of Benewah County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Benewah County in numbers

About 10,142 people live in Benewah County, in 4,072 households, the 30th most populous of Idaho's 44 counties. The median household income is $59,794 a year, 23% below the Idaho median of $77,800 (US: $80,734). The median owner-occupied home is valued at $293,500 (30% below the Idaho median), and median gross rent is $875 a month. The median age is 45.5; 19.7% of adults 25 and over hold a bachelor's degree or higher (31.8% across Idaho); the average commute takes 24 minutes.

Population10,142Benewah10,142
Households4,072Benewah4,072
Median age45.5Benewah45.5Idaho37.3US 38.9
Median household income$59,794Benewah$59,794Idaho$77,800US $80,734
Median home value$293,500Benewah$293,500Idaho$418,600US $332,700
Median gross rent$875Benewah$875Idaho$1,238US $1,413
Bachelor's degree or higher19.7%Benewah19.7%Idaho31.8%US 35.7%
Mean commute23.8 minBenewah23.8 minIdaho21.6 minUS 26.4 min
Population density13 / sq miBenewah13 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.

Largest towns in Benewah County

Largest towns in Benewah County
TownZIP codesPopulation
St. Maries 1 2,915
Plummer 1 1,162
Desmet 1 452
Santa 1 352
Tensed 1 71
Fernwood 1 45

Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.

Neighbouring counties

Counties that share a ZIP code with Benewah County.

Not sure you are in Benewah County? What county am I in? answers from your location, near a county line included.

Every ZIP code in Benewah County, with figures

ZIP codes in Benewah County
ZIP City Type Population Median income Median home
83824 Desmet , ID Standard 452 $53,036 $336,700
83830 Fernwood , ID Standard 45 $108,182 $280,800
83851 Plummer , ID Standard 2,113 $57,356 $251,200
83861 Saint Maries , ID Standard 7,275 $65,508 $307,800
83866 Santa , ID Standard 352 $31,711 $271,300
83870 Tensed , ID Standard 421 $51,250 $486,100

Cite this page

zipcodes.pro. “Benewah County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/id/county/benewah

Underlying data is public domain or openly licensed — sources, vintages and licences.