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503 373 0701 | Mon-Fri: 8am-4:45pm
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Oregon Historical County Records Guide
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County Seats and Geography Maps
Note: The following maps are intended to provide researchers with a general understanding of Oregon county seat locations and major geographic features. Researchers should refer to other sources for more detailed and precise representations.
County boundaries in 1843 (present Oregon boundaries shaded):
County boundaries in 1851:
County boundaries in 1856:
County boundaries in 1865:
County boundaries in 1893:
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