The region is bounded on the east by the Willamette River and on the west by Southwest Naito Parkway, Southwest View Point Terrace, and Tryon Creek State Natural Area.
South Portland includes approximately 10,000 properties in the Collins View and South Waterfront neighborhoods, as well as portions of the Lewis and Clark College and Oregon Health & Science University campuses.
However, emergency dispatch systems and mapping software had difficulty with the leading zeroes, making the change necessary.
City officials began installing updated street signs in May 2020, and older signage will be removed in 2025.
The United States Postal Service will be able to use either address system.