Overview of Washington County and Hillsboro ZIP Codes

Washington County, Oregon, anchored by major hubs like Hillsboro and Beaverton, features a varied ZIP Code system covering the dense high-tech "Silicon Forest" corridor, expansive southern suburbs, and rural agricultural areas stretching toward the Coast Range. The county includes 34 total ZIP Codes, comprised of standard residential delivery areas and dedicated PO Box distribution centers.

Total ZIP Codes: 34
Standard residential ZIP Codes: 27
PO Box ZIP Codes: 7
Census ZIP Code Tabulation Areas (ZCTAs): 27

ZIP Code Range in Washington County

Washington County ZIP Codes span across the "970" (Beaverton/Tualatin), "971" (Hillsboro/Western County), and "972" (Portland boundaries/Tigard) prefixes:

Lowest ZIP Code: 97003 (Beaverton)
Highest ZIP Code: 97298 (Portland - PO Box)
Highest Residential ZIP Code: 97229 (Bethany/Cedar Mill/Portland border)
Overall ZIP range: 97003–97298

Post Offices and PO Box ZIP Codes

PO Box ZIP Codes: 7 PO Box-only ZIP Codes (e.g., 97075, 97076, 97077 in Beaverton, and 97281 in Tigard)
Post office facilities: 16 USPS post offices, stations, and branches throughout the county
PO Box locations: Concentrated in major population hubs like Beaverton, Hillsboro, and Tigard

Cities, Towns, and Communities Covered by Washington County ZIP Codes

Washington County ZIP Codes serve major economic centers, southern suburbs, and smaller rural communities to the west.

Central & Western County (971xx Series)

Hillsboro Core & Tech Corridor: (97123, 97124)
Western Hubs: Forest Grove (97116), Cornelius (97113)
Rural/Agricultural Towns: Banks (97106), North Plains (97133), Gaston (97119), Timber (97144)

Eastern & Southern County (970xx & 972xx Series)

Beaverton Area: Central Beaverton, Aloha (97003, 97005, 97006, 97007, 97008)
Southern Suburbs: Tigard (97223, 97224), Tualatin (97062), Sherwood (97140)
Northeast/Portland Border: Bethany, Cedar Mill, West Haven-Sylvan (97225, 97229)

Note: The "972" prefix in Washington County primarily covers areas bridging the Portland city limits and Tigard, while "970" and "971" designate the independent cities and unincorporated areas that make up the bulk of the county.

ZIP Code Population Patterns

Population density varies heavily from the densely populated tech and residential corridors in the east to the sparse logging and farming communities in the Coast Range foothills.

Most populated ZIP Code areas: The 97229 area (Bethany/Cedar Mill) is the most populous with over 76,000 residents, followed by Hillsboro's 97124 and Tigard's 97223, all boasting populations over 50,000.
Least populated ZIP Codes: Rural western communities like Timber (97144), Buxton (97109), and Gales Creek (97117) each have fewer than 1,000 residents.

Key ZIP Code Statistics (Summary)

Category	Value
Total ZIP Codes	34
Standard ZIP Codes	27
PO Box ZIP Codes	7
ZIP Code Range	97003–97298
Census ZCTAs	27
Highest Life Expectancy (by ZCTA)	85.4 years (97229 - Bethany/Cedar Mill)*
Highest Crime Rate Index	97005 (Downtown Beaverton)*

*Note: 97229 consistently ranks highest for longevity and overall Niche grades in the county. 97005 has a higher crime index relative to the rest of the county primarily due to property crime volume within its dense commercial and transit-heavy center.

Washington County, Oregon Zip Codes List

Aloha 97003 Zip Code Washington County

Aloha 97078 Zip Code Washington County

Amberglen 97006 Zip Code Washington County

Banks 97106 Zip Code Washington County

Beaverton 97005 Zip Code Washington County

Beaverton 97006 Zip Code Washington County

Beaverton 97007 Zip Code Washington County

Beaverton 97008 Zip Code Washington County

Bethany 97229 Zip Code Washington County

Blooming 97113 Zip Code Washington County

Bull Mountain 97224 Zip Code Washington County

Carnation 97116 Zip Code Washington County

Cedar Hills 97225 Zip Code Washington County

Cherry Grove 97119 Zip Code Washington County

Christie 97116 Zip Code Washington County

Clark District 97116 Zip Code Washington County

Cooper Mountain 97007 Zip Code Washington County

Cornelius 97113 Zip Code Washington County

Dilley 97116 Zip Code Washington County

Downtown Tigard 97223 Zip Code Washington County

Durham 97224 Zip Code Washington County

Farmington 97123 Zip Code Washington County

Five Oaks-Triple Creek 97006 Zip Code Washington County

Forest Grove 97116 Zip Code Washington County

Gales Creek 97117 Zip Code Washington County

Garden Home-Whitford 97223 Zip Code Washington County

Gaston 97119 Zip Code Washington County

Glencoe 97124 Zip Code Washington County

Greenville 97106 Zip Code Washington County

Helvetia 97124 Zip Code Washington County

Highland 97008 Zip Code Washington County

Hillsboro 97123 Zip Code Washington County

Hillsboro 97124 Zip Code Washington County

Hillside 97116 Zip Code Washington County

Ibach 97062 Zip Code Washington County

Jack Park 97223 Zip Code Washington County

Jacktown 97123 Zip Code Washington County

Kansas City 97116 Zip Code Washington County

Kingston Terrace 97224 Zip Code Washington County

Kinton 97007 Zip Code Washington County

Laurel 97123 Zip Code Washington County

Laurelwood 97119 Zip Code Washington County

Marlene Village 97006 Zip Code Washington County

Middleton 97140 Zip Code Washington County

Midway 97123 Zip Code Washington County

Midwest 97062 Zip Code Washington County

Mountaindale 97133 Zip Code Washington County

Mulloy 97140 Zip Code Washington County

Neighbors Southwest 97007 Zip Code Washington County

North Hillsboro 97124 Zip Code Washington County

Oak Hills 97006 Zip Code Washington County

Orenco 97124 Zip Code Washington County

Patton 97119 Zip Code Washington County

Raleigh Hills 97225 Zip Code Washington County

River Terrace 97223 Zip Code Washington County

Riverpark 97224 Zip Code Washington County

Rock Creek 97229 Zip Code Washington County

Schefflin 97113 Zip Code Washington County

Scholls 97123 Zip Code Washington County

Seghers 97119 Zip Code Washington County

Sexton Mountain 97007 Zip Code Washington County

Sherwood 97140 Zip Code Washington County

Six Corners 97140 Zip Code Washington County

South Greenway 97008 Zip Code Washington County

South Hillsboro 97123 Zip Code Washington County

Sylvan 97225 Zip Code Washington County

Thatcher 97116 Zip Code Washington County

Tigard 97223 Zip Code Washington County

Tigard 97224 Zip Code Washington County

Tigard Triangle 97223 Zip Code Washington County

Tualatin 97062 Zip Code Washington County

Verboort 97116 Zip Code Washington County

Vose 97008 Zip Code Washington County

Watts 97116 Zip Code Washington County

West Haven-Sylvan 97225 Zip Code Washington County

West Slope 97225 Zip Code Washington County

West Tigard 97224 Zip Code Washington County

Washington County, Oregon Zip Code Map