
Hillsboro serves as the focal point of this 2020 landscape, where the suburban grid meets the agricultural and industrial reaches of the Tualatin Valley. The Washington County Courthouse and the Main Street Bridge anchor the historic civic center, while the expansive Portland-Hillsboro Airport dominates the northern edge of the city. Beyond the urban core, the map reveals a transition into the foothills of the Tualatin Mountains and Pumpkin Ridge, where smaller communities like Helvetia and West Union maintain their distinct identities. This sheet provides significant detail for researchers, showing the location of the Old Scotch Cem, West Union Cem, and Valley Memorial Park Cem, alongside industrial features like the Jackson Quarry. The hydrology of the area is complex, ranging from the managed waters of the Jackson Reservoir and Vanderzanden Reservoir to the natural wetlands of Jackson Bottom.
270 named features on this map. Tap any name to fly to it.
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This is the sole edition of this map. No revisions or reprints were ever made.
1915 · Hillsboro
USGS Topo · 1:62,500
1916 · Tualatin
USGS Topo · 1:62,500
1918 · Hillsboro
USGS Topo · 1:62,500
1939 · Tualatin
USGS Topo · 1:62,500
1940 · Tualatin
USGS Topo · 1:62,500
1940 · Hillsboro
USGS Topo · 1:62,500
1941 · Gales Creek
USGS Topo · 1:62,500
1941 · Yamhill
USGS Topo · 1:62,500
1942 · Yamhill
USGS Topo · 1:62,500
1948 · Vancouver
USGS Topo · 1:250,000