ZIP codes

ZIP codes in Washington County, Oregon

Washington County has 29 ZIP codes. 16 lie entirely inside it and 13 are shared with neighboring counties, so part of their land and their people are elsewhere. About 604,274 people live in the parts inside it (ACS 2020–2024).

By the All Map Tools Team

ZIP codes: 29; 3 more just touch the border (under 1% of their land)
Entirely inside: 16; 99% or more of their land
Shared with other counties: 13; Most with Multnomah County (6)
Most populated ZIP: 97229; 76,106 people · Bethany
Least populated ZIP: 97144; 66 people
Largest ZIP by land: 97119; 94 sq mi · Cherry Grove

Map of the ZIP codes in Washington County

Entirely in the county (99% or more of its land)
Shared, mostly in this county
Shared, mostly in other counties
Neighboring counties

Open in the interactive tool

Each area is a ZIP code with its number where it fits. Hover over one to see its name.

All ZIP codes in Washington County

29 ZIP codes in Washington County, OR, by number
ZIP code	Main city	Population	Land in the county	Residents in the county
97003	Aloha	27,811	100%	27,811
97005	Beaverton	28,311	100%	28,311
97006	Beaverton	46,463	100%	46,463
97007	Beaverton	47,895	100%	47,895
97008	Beaverton	28,611	100%	28,611
97035	Lake Oswego	25,911	2.0%	≈ 454
97056	Scappoose	12,795	11%	≈ 741
97062	Tualatin	28,930	73%	≈ 27,203
97064	Vernonia	3,855	7.0%	≈ 442
97070	Wilsonville	26,902	3.5%	≈ 766
97078	Aloha	25,662	100%	25,662
97106	Banks	4,855	100%	4,855
97109	—	730	100%	730
97113	Cornelius	16,268	100%	16,268
97116	Forest Grove	29,800	100%	29,800
97117	—	982	100%	982
97119	Cherry Grove	5,233	79%	≈ 3,994
97123	Hillsboro	48,410	89%	≈ 47,975
97124	Hillsboro	54,357	98%	≈ 54,308
97125	—	248	100%	248
97132	Newberg	32,486	6.5%	≈ 437
97133	North Plains	5,416	96%	≈ 5,235
97140	Sherwood	27,933	75%	≈ 22,360
97144	—	66	100%	66
97223	Tigard	50,527	100%	50,527
97224	Tigard	36,569	100%	36,569
97225	Beaverton	25,869	99.2%	≈ 25,783
97229	Bethany	76,106	62%	≈ 68,367
97231	Portland	4,308	2.6%	≈ 1,293

They also touch the county with under 1% of their land, so they aren’t counted: 97210, 97219, and 97221.

ZIP codes shared with other counties

These 13 ZIP codes have part of their land in another county. The first figure is the share of their land in Washington County; then, where the rest lies.

97035 (Lake Oswego): 2.0% here; 88% in Clackamas County and 10% in Multnomah County.
97056 (Scappoose): 11% here; 85% in Columbia County and 4.2% in Multnomah County.
97062 (Tualatin): 73% here; 27% in Clackamas County.
97064 (Vernonia): 7.0% here; 93% in Columbia County.
97070 (Wilsonville): 3.5% here; 96% in Clackamas County.
97119 (Cherry Grove): 79% here; 21% in Yamhill County.
97123 (Hillsboro): 89% here; 11% in Yamhill County.
97124 (Hillsboro): 98% here; 2.1% in Multnomah County.
97132 (Newberg): 6.5% here; 92% in Yamhill County and 1.2% in Clackamas County.
97133 (North Plains): 96% here; 3.6% in Multnomah County.
97140 (Sherwood): 75% here; 23% in Clackamas County and 2.4% in Yamhill County.
97229 (Bethany): 62% here; 38% in Multnomah County.
97231 (Portland): 2.6% here; 80% in Multnomah County and 17% in Columbia County.

Cities and prefixes

By main city (the city, town or CDP each ZIP shares the most land with), the ones with the most are Beaverton (5), Aloha (2), Hillsboro (2), Tigard (2), Banks (1), and Bethany (1); 18 places in all.

They start with 3 different three-digit prefixes, one per USPS sorting center: 970, 971, and 972.

Neighboring counties

Each one with its ZIP codes. Those without a page of their own open in the tool.

Tools for this county

ZIP codes by county or city The same ZIP codes on an interactive map, with the list as CSV or to copy County map with cities Its cities, towns and CDPs with their population ZIP codes in a radius The ZIP codes within 10 miles of its center, or any distance you like

Sources

U.S. Census Bureau, 2020 ZCTA to County, ZCTA to Place and ZCTA to Census Tract Relationship Files (and the 2022 County Subdivision to ZCTA file for Connecticut). Public domain.
U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, table B01003 (population of each ZIP code, census tract and Connecticut town). Public domain.
U.S. Census Bureau, Vintage 2025 Population Estimates (county population) and 2025 Gazetteer Files (land area and interior point of each ZIP code). Public domain.
U.S. Census Bureau, Cartographic Boundary Files: ZCTAs 2020 and counties 2025, 1:500,000; county adjacency file 2025. Public domain.

How we count. ZIP codes here are the Census Bureau’s ZIP Code Tabulation Areas (ZCTAs), the areas it draws to match USPS ZIP codes; ZIPs with no area of their own (PO boxes, single buildings) aren’t included. A ZIP can cross county lines: “Land in the county” is the exact share of its land inside, from the Census relationship files. “Residents in the county” is the whole ZIP for those entirely inside; for shared ones it’s an estimate, spreading the people of each census tract over the land it shares with the ZIP. Population: ACS 2020–2024. Methodology.

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