Happy Valley - 503 dialing code
Dialing code +1 (503) cities
- Beaverton
- Detroit
- Wilsonville
- Carlton
- Fairview
- Hillsboro
- Oak Grove
- Banks
- Dayton
- Marion
- Beaver
- Happy Valley
- St. Paul
- Prescott
- Damascus
- Salem
- Sherwood
- Amity
- Portland
- Sheridan
- Warren
- Canby
- Durham
- Monmouth
- Cloverdale
- Independence
- Oak Hills
- Oceanside
- King City
- Seaside
- Lafayette
- Aurora
- Lyons
- Silverton
- Westport
- Four Corners
- Dundee
- Warrenton
- Brooks
- Dallas
- Bethany
- Wheeler
- Astoria
- Gladstone
- Columbia City
- Woodburn
- Idaville
- Gaston
- Hayesville
- Hubbard
- Johnson City
- Stafford
- Barlow
- Bay City
- Turner
- Rockaway Beach
- Falls City
- Gresham
- Gates
- Scio
- Cornelius
- Beavercreek
- Aloha
- Aumsville
- Bayside Gardens
- Bull Mountain
- Butteville
- Cannon Beach
- Cape Meares
- Cedar Hills
- Cedar Mill
- Clatskanie
- Crabtree
- Deer Island
- Donald
- Eola
- Estacada
- Forest Grove
- Fort Hill
- Garden Home-Whitford
- Garibaldi
- Gearhart
- Gervais
- Government Camp
- Grand Ronde
- Hebo
- Idanha
- Jeffers Gardens
- Jennings Lodge
- Keizer
- Labish Village
- Lake Oswego
- McMinnville
- Manzanita
- Maywood Park
- Mehama
- Metzger
- Mill City
- Milwaukie
- Molalla
- Mount Angel
- Mount Hood Village
- Mulino
- Neahkahnie
- Nehalem
- Neskowin
- Netarts
- Newberg
- North Plains
- Oatfield
- Oregon City
- Pacific City
- Rainier
- Raleigh Hills
- Rickreall
- Rivergrove
- Rockcreek
- St. Helens
- Sandy
- Scappoose
- Scotts Mills
- Stayton
- Sublimity
- Tigard
- Tillamook
- Troutdale
- Tualatin
- Vernonia
- West Haven-Sylvan
- West Linn
- West Scio
- West Slope
- Willamina
- Wood Village
- Yamhill