| Capital: | Hillsboro |
|---|---|
| Origen y Formación del condado: | One of the original four districts of the Oregon Country (as Twality District) |
| Población: | 550,990 habitantes |
| Área: | 724 sq mi |
| Localización del condado dentro de Oregon: |
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Localidades en Washington, Oregon
- Aloha
- Banks
- Beaverton
- Bull Mountain
- Buxton
- Cedar Hills
- Cedar Mill
- Cherry Grove
- Cornelius
- Durham
- Forest Grove
- Gales Creek
- Garden Home Whitford
- Gaston
- Hillsboro
- King City
- Lake Oswego
- Manning
- Metzger
- North Plains
- Oak Hills
- Portland
- Raleigh Hills
- Rivergrove
- Rockcreek
- Scholls
- Sherwood
- Tigard
- Timber
- Tualatin
- West Haven Sylvan
- West Slope
- Wilsonville