ZIP Code 99022

99022 is one of Washington's ZIP codes, delivering to addresses in Medical Lake, Spokane County.

City: Medical Lake
County: Spokane County
State: Washington
Prefix: 990xx

Where this code sits

99022 is part of the 990xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Medical Lake.

Medical Lake Washington ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 99022 delivers to without sharing its boundary.

509 Area code 509

ZIP codes nearest 99022

The ZIP codes whose reference points sit closest to 99022.
ZIP code	Distance	Delivers to
ZIP code 99011	2.6 mi	Fairchild Air Force Base, WA
ZIP code 99001	5.6 mi	Airway Heights, WA
ZIP code 99014	6.3 mi	Four Lakes, WA
ZIP code 99224	7.2 mi	Spokane, WA
ZIP code 99029	9.8 mi	Reardan, WA
ZIP code 99004	10 mi	Cheney, WA
ZIP code 99020	10 mi	Marshall, WA
ZIP code 99008	11 mi	Edwall, WA

Straight-line distance between place reference points, not driving distance. Where a place has no Census Gazetteer point, its postal centroid is used instead.

Each point is the reference point for 99022, plotted from its record coordinates.

Reference points and footprint
Not an official NANPA boundary
Not a USPS delivery area

Scope ZIP code 99022. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. A ZIP code is a set of delivery routes, not an area; the point shown is a record coordinate, not a centre.