Monroe Oregon ZIP Codes

Monroe holds a single ZIP code.

Every ZIP code in Monroe

The complete list of Monroe, Oregon ZIP codes with the county each falls in.
ZIP code	County
97456	Benton County

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP. USPS delivery-type products are licensed, and no clean-rights source maps ZIP codes to neighbourhoods — so the Monroe codes above are listed without a column we would have to invent.

Scope every ZIP code recorded for Monroe. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. ZIP codes are delivery-route groupings, not areas; the boundaries implied by any ZIP map are approximations.

How these codes cluster

Every Monroe ZIP code begins 974. Those first three digits identify the sectional center facility that processes mail for this part of Oregon. Statewide that range covers 84 ZIP codes, so Monroe accounts for 1% of it.

Every Oregon ZIP prefix and the region it covers →

Area codes covering Monroe

ZIP codes and area codes are separate systems — one routes mail, the other routes calls — and they do not share boundaries. The codes below serve the same ground Monroe occupies.

Monroe Oregon area codes in full →

Where Monroe's ZIP codes sit

Each point is one Monroe ZIP code, plotted from its record coordinates.

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

Cities near Monroe

The closest places to Monroe with their own ZIP code list, nearest first.
City	Distance	ZIP codes
Harrisburg Oregon ZIP codes	7.5 mi	1 ZIP code
Junction City Oregon ZIP codes	8.7 mi	1 ZIP code
Halsey Oregon ZIP codes	10 mi	1 ZIP code
Philomath Oregon ZIP codes	16 mi	1 ZIP code
Brownsville Oregon ZIP codes	16 mi	1 ZIP code
Corvallis Oregon ZIP codes	18 mi	4 ZIP codes
Tangent Oregon ZIP codes	18 mi	1 ZIP code
Veneta Oregon ZIP codes	19 mi	1 ZIP code

Straight-line distance between place reference points, not driving distance.