Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — STATE/OR/COUNTY/WASHINGTON

Washington County, OR ZIP codes

There are 31 ZIP codes in Washington County, OR, in 14 towns, from 97003 to 97298. The largest are 97229 (Portland), 97124 (Hillsboro) and 97223 (Portland).

The county seat is Hillsboro.

ZIP codes
31
Towns
14
County seat
Hillsboro
County FIPS
41067
State
Oregon
Population
603,947
Median household income
$107,772
Land area
724 sq mi
Area codes
503, 971

Washington County ZIP codes by town

Hillsboro (county seat)
97123, 97124, 97129

Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.

Map of Washington County ZIP codes

97003970059700697007970089706297075970769707797078970799710697109971139711697117971199712397124971259712997133971409714497223972249722597229972819729197298

The ZIP codes of Washington County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Washington County in numbers

About 603,947 people live in Washington County, in 235,406 households, the 2nd most populous of Oregon's 36 counties. The median household income is $107,772 a year, 30% above the Oregon median of $83,011 (US: $80,734). The median owner-occupied home is valued at $588,000 (23% above the Oregon median), and median gross rent is $1,849 a month. The median age is 38.1; 47.5% of adults 25 and over hold a bachelor's degree or higher (36.8% across Oregon); the average commute takes 24 minutes.

Population603,947Washington603,947
Households235,406Washington235,406
Median age38.1Washington38.1Oregon40.4US 38.9
Median household income$107,772Washington$107,772Oregon$83,011US $80,734
Median home value$588,000Washington$588,000Oregon$477,600US $332,700
Median gross rent$1,849Washington$1,849Oregon$1,525US $1,413
Bachelor's degree or higher47.5%Washington47.5%Oregon36.8%US 35.7%
Mean commute24.0 minWashington24.0 minOregon23.0 minUS 26.4 min
Population density834 / sq miWashington834 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.

Largest towns in Washington County

Largest towns in Washington County
TownZIP codesPopulation
Portland 7 641,165
Hillsboro 3 108,231
Beaverton 10 97,812
Tualatin 1 27,763
Forest Grove 1 26,529
Sherwood 1 20,307
Cornelius 1 14,255
North Plains 1 3,433
Banks 1 2,156
Gales Creek 1 982
Buxton 1 730
Gaston 1 605
Manning 1 248
Timber 1 66

Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.

Neighbouring counties

Counties that share a ZIP code with Washington County.

Not sure you are in Washington County? What county am I in? answers from your location, near a county line included.

Every ZIP code in Washington County, with figures

ZIP codes in Washington County
ZIP City Type Population Median income Median home
97003 Beaverton , OR Standard 27,811 $99,072 $478,300
97005 Beaverton , OR Standard 28,311 $78,239 $504,300
97006 Beaverton , OR Standard 46,463 $104,790 $549,200
97007 Beaverton , OR Standard 47,895 $123,533 $608,800
97008 Beaverton , OR Standard 28,611 $96,116 $578,100
97062 Tualatin , OR Standard 28,930 $105,407 $640,300
97075 Beaverton , OR No street area — — —
97076 Beaverton , OR No street area — — —
97077 Beaverton , OR No street area — — —
97078 Beaverton , OR Standard 25,662 $90,606 $478,800
97079 Beaverton , OR No street area — — —
97106 Banks , OR Standard 4,855 $104,250 $546,400
97109 Buxton , OR Standard 730 $150,893 $739,400
97113 Cornelius , OR Standard 16,268 $96,859 $465,400
97116 Forest Grove , OR Standard 29,800 $92,613 $495,800
97117 Gales Creek , OR Standard 982 $121,818 $652,800
97119 Gaston , OR Standard 5,233 $115,515 $629,000
97123 Hillsboro , OR Standard 48,410 $109,985 $538,500
97124 Hillsboro , OR Standard 54,357 $110,067 $556,300
97125 Manning , OR Standard 248 $250,000+ $1,166,700
97129 Hillsboro , OR No street area — — —
97133 North Plains , OR Standard 5,416 $133,167 $680,000
97140 Sherwood , OR Standard 27,933 $123,228 $653,600
97144 Timber , OR Standard 66 — —
97223 Portland , OR Standard 50,527 $106,757 $600,300
97224 Portland , OR Standard 36,569 $98,125 $599,600
97225 Portland , OR Standard 25,869 $114,598 $751,700
97229 Portland , OR Standard 76,106 $161,570 $782,100
97281 Portland , OR No street area — — —
97291 Portland , OR No street area — — —
97298 Portland , OR No street area — — —

Cite this page

zipcodes.pro. “Washington County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/or/county/washington

Underlying data is public domain or openly licensed — sources, vintages and licences.