County ZIP codes · Oregon · FIPS 41067
Washington County, OR ZIP Codes
Washington County, Oregon has 37 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 29 residential and 8 for PO boxes or a single organization. 23 of the residential ones lie mainly in Washington County and 6 mainly in a neighboring county; 13 cross the county line. Median household income ranges from $67,317 in 97064 (Vernonia) to $161,570 in 97229 (Portland) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Washington 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 $96,493 and $115,515.
They carry 19 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 29 residential ZIP codes in Washington County
23 ZIP codes lie mainly in Washington County; 6 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 97229 | Portland | 76,106 | 3,873 | $162k | $782k | 62% |
| 97124 | Hillsboro | 54,357 | 1,204 | $110k | $556k | 98% |
| 97223 | Portland | 50,527 | 4,567 | $107k | $600k | 100% |
| 97123 | Hillsboro | 48,410 | 870 | $110k | $539k | 89% |
| 97007 | Beaverton | 47,895 | 2,565 | $124k | $609k | 100% |
| 97006 | Beaverton | 46,463 | 6,422 | $105k | $549k | 100% |
| 97224 | Portland | 36,569 | 4,042 | $98k | $600k | 100% |
| 97116 | Forest Grove | 29,800 | 363 | $93k | $496k | 100% |
| 97062 | Tualatin | 28,930 | 2,037 | $105k | $640k | 73% |
| 97008 | Beaverton | 28,611 | 5,400 | $96k | $578k | 100% |
| 97005 | Beaverton | 28,311 | 5,524 | $78k | $504k | 100% |
| 97140 | Sherwood | 27,933 | 627 | $123k | $654k | 75% |
| 97003 | Beaverton | 27,811 | 5,907 | $99k | $478k | 100% |
| 97225 | Portland | 25,869 | 3,885 | $115k | $752k | 99% |
| 97078 | Beaverton | 25,662 | 4,077 | $91k | $479k | 100% |
| 97113 | Cornelius | 16,268 | 466 | $97k | $465k | 100% |
| 97133 | North Plains | 5,416 | 71 | $133k | $680k | 96% |
| 97119 | Gaston | 5,233 | 55 | $116k | $629k | 79% |
| 97106 | Banks | 4,855 | 110 | $104k | $546k | 100% |
| 97117 | Gales Creek | 982 | 25 | $122k | $653k | 100% |
| 97109 | Buxton | 730 | 27 | $151k | $739k | 100% |
| 97125 | Manning | 248 | 48 | $250k+ | $1.17M | 100% |
| 97144 | Timber | 66 | 4 | – | – | 100% |
Partly in Washington County
| In this county | ||||||
|---|---|---|---|---|---|---|
| 97056 | Scappoose | 12,795 | 116 | $94k | $470k | 11% |
| 97064 | Vernonia | 3,855 | 39 | $67k | $384k | 7% |
| 97132 | Newberg | 32,486 | 519 | $97k | $523k | 6% |
| 97070 | Wilsonville | 26,902 | 1,515 | $97k | $631k | 4% |
| 97231 | Portland | 4,308 | 69 | $138k | $858k | 3% |
| 97035 | Lake Oswego | 25,911 | 4,455 | $131k | $837k | 2% |
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?
14 ZIP codes of Washington County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Washington | Elsewhere |
|---|---|---|
| 97229 | 62% | Multnomah County 38% |
| 97124 | 98% | Multnomah County 2% |
| 97123 | 89% | Yamhill County 11% |
| 97132 | 6% | Yamhill County 92%; Clackamas County 1% |
| 97062 | 73% | Clackamas County 27% |
| 97140 | 75% | Clackamas County 23%; Yamhill County 2% |
| 97070 | 4% | Clackamas County 96% |
| 97035 | 2% | Clackamas County 88%; Multnomah County 10% |
| 97225 | 99% | |
| 97056 | 11% | Columbia County 85%; Multnomah County 4% |
| 97133 | 96% | Multnomah County 4% |
| 97119 | 79% | Yamhill County 21% |
| 97231 | 3% | Multnomah County 80%; Columbia County 17% |
| 97064 | 7% | Columbia County 93% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
PO Box and single-organization ZIP codes
Source: GeoNames postal codes (CC BY 4.0).
Which first three digits do Washington County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Washington County's ZIP codes use 3 prefixes: 970, 971 and 972.
| Prefix | Sectional center | Here | All codes |
|---|---|---|---|
| 970 | Portland, OR (SCF 970) | 15 | 69 |
| 971 | Portland, OR (SCF 970) | 14 | 43 |
| 972 | Portland, OR (SCF 970) | 8 | 60 |
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.