????–present[]
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UNKNOWN YEAR |
Municipalities of Washington County, Oregon
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| Banks | Beaverton | Cornelius | Durham | Forest Grove | Gaston | Hillsboro | King City | Lake Oswego (part) | North Plains | Portland (part) | Rivergrove (part) | Sherwood | Tigard | Tualatin (part) | Wilsonville (part) |
Municipalities of Clackamas County, Oregon
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| Barlow | Canby | Estacada | Gladstone | Happy Valley | Johnson City | Lake Oswego (part) | Milwaukie (part) | Molalla | Oregon City | Portland (part) | Rivergrove (part) | Sandy | Tualatin (part) | West Linn | Wilsonville (part)
Former: Damascus |