ZIP Code 97864

97864 is one of Oregon's ZIP codes, delivering to addresses in Monument, Grant County.

City: Monument
County: Grant County
State: Oregon
Prefix: 978xx

Where this code sits

97864 is part of the 978xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Monument.

Monument Oregon ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 97864 delivers to without sharing its boundary.

ZIP codes nearest 97864

The ZIP codes whose reference points sit closest to 97864.
ZIP code	Distance	Delivers to
ZIP code 97848	11 mi	Kimberly, OR
ZIP code 97856	16 mi	Long Creek, OR
ZIP code 97874	20 mi	Spray, OR
ZIP code 97825	25 mi	Dayville, OR
ZIP code 97880	32 mi	Ukiah, OR
ZIP code 97865	32 mi	Mount Vernon, OR
ZIP code 97845	36 mi	John Day, OR
ZIP code 97836	37 mi	Heppner, OR

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 97864, plotted from its record coordinates.

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

Scope ZIP code 97864. 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.