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County ZIP codes · Idaho · FIPS 16021

Boundary County, ID ZIP Codes

Boundary County, Idaho has 6 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 5 residential and 1 for PO boxes or a single organization. 4 of the residential ones lie mainly in Boundary County and 1 mainly in a neighboring county; 1 cross the county line. Median household income ranges from $70,083 in 83805 (Bonners Ferry) to $70,496 in 83864 (Sandpoint) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Boundary County?

83805 · Bonners Ferry: $70k83826 · Eastport: –83845 · Moyie Springs: $73k83847 · Naples: $49k83864 · Sandpoint: $71k838058386483847838458382683805 · Bonners Ferry: $70k83826 · Eastport: –83845 · Moyie Springs: $73k83847 · Naples: $49k83864 · Sandpoint: $71k838058386483847838458382683805 · Bonners Ferry: $70k83826 · Eastport: –83845 · Moyie Springs: $73k83847 · Naples: $49k83864 · Sandpoint: $71k8380583864838478384583826
The residential ZIP codes of Boundary County (whole outlines, including the parts in neighboring counties), shaded by median household income in national fifths (ACS 2020-2024). <$54.1k$98.1k+no figure

Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).

How different are its ZIP codes?

They carry 5 postal town names: Sandpoint, Bonners Ferry, Moyie Springs, Naples, Eastport.

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).

All 5 residential ZIP codes in Boundary County

4 ZIP codes lie mainly in Boundary County; 1 more reaches into it from a neighboring county and follows the first table.

Residential ZIP codes mainly in Boundary County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
83805 Bonners Ferry 9,174 10 $70k $419k 100%
83845 Moyie Springs 2,202 33 $73k $374k 100%
83847 Naples 1,714 14 $49k $545k 100%
83826 Eastport 63 5 – – 100%

Partly in Boundary County

Residential ZIP codes mainly in another county that reach at least 1% into Boundary County, by their share here
In this county
83864 Sandpoint 20,514 51 $71k $517k 27%

Download the 6 ZIP codes as CSV

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).

Which ZIP codes cross the county line?

1 ZIP code of Boundary County extends into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in Boundary County and in the neighboring counties
ZIPIn BoundaryElsewhere
8386427%Bonner County 73%

Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).

PO Box and single-organization ZIP codes

ZIP codes in Boundary County without a residential area (GeoNames postal codes)
ZIPPostal name
83853Porthill

Source: GeoNames postal codes (CC BY 4.0).

Which first three digits do Boundary County's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Every ZIP code of Boundary County starts with 838.

Three-digit prefixes of Boundary County's ZIP codes, the sectional center for each (USPS labeling list L005, effective October 1, 2026) and how many of the prefix's codes are Boundary County's
PrefixSectional centerHereAll codes
838 Spokane, WA (SCF 990) 6 64

Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.