County ZIP codes · Oregon · FIPS 41003
Benton County, OR ZIP Codes
Benton County, Oregon has 11 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 10 residential and 1 for PO boxes or a single organization. 6 of the residential ones lie mainly in Benton County and 4 mainly in a neighboring county; 8 cross the county line. Median household income ranges from $65,191 in 97333 (Corvallis) to $99,416 in 97321 (Albany) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Benton County?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
How different are its ZIP codes?
The middle half of its ranked ZIP codes (1,000+ people living in households) report median household incomes between $67,891 and $81,029.
They carry 8 postal town names: Corvallis, Albany, Monmouth, Junction City, Philomath, Monroe, Alsea, Blodgett.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 10 residential ZIP codes in Benton County
6 ZIP codes lie mainly in Benton County; 4 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 97330 | Corvallis | 43,878 | 563 | $71k | $527k | 100% |
| 97333 | Corvallis | 23,934 | 214 | $65k | $511k | 89% |
| 97370 | Philomath | 9,521 | 53 | $88k | $463k | 94% |
| 97331 | Corvallis | 3,693 | 6,776 | – | – | 100% |
| 97456 | Monroe | 3,422 | 37 | $71k | $408k | 97% |
| 97324 | Alsea | 1,470 | 8 | $68k | $397k | 77% |
Partly in Benton County
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?
8 ZIP codes of Benton County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Benton | Elsewhere |
|---|---|---|
| 97321 | 31% | Linn County 69% |
| 97333 | 89% | Linn County 11% |
| 97361 | 11% | Polk County 89% |
| 97448 | 6% | Lane County 94% |
| 97370 | 94% | Polk County 6% |
| 97456 | 97% | Lane County 3% |
| 97324 | 77% | Lane County 14%; Lincoln County 9% |
| 97326 | 39% | Lincoln County 61% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
PO Box and single-organization ZIP codes
| ZIP | Postal name |
|---|---|
| 97339 | Corvallis |
Source: GeoNames postal codes (CC BY 4.0).
Which first three digits do Benton County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Benton County's ZIP codes use 2 prefixes: 973 and 974.
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.