Compare it's view to Beaverton, Oregon: https://anvaka.github.io/city-roads/?q=Beaverton%2C%20OR&are...
With the Google Maps view: https://www.google.com/maps/@45.5029349,-122.8365195,13.75z
It's like most of the Cedar Hills neighborhood doesn't exist. It also drew a line for a power line where there is no road.
Perhaps in situations like this, "City Roads" might consider ignoring the cut-out enclaves and just using the mulipolygon's outer boundaries.
The power line showing up as a road is a mystery. If you can locate the corresponding feature on OSM you might want to investigate it. (There may in fact be a road or trail of some sort, though -- it's common for powerlines to have a track for maintenance vehicles.)
My mailing address is in Beaverton, but OSM thinks it's Aloha. My zip code according to the post office is 97003, but some map software rejects it as non-existent, or forces a change to 97006.
OSM's Portland borders also definitely don't match what mailing addresses are there. I used to live in apartments off of NW 185th near US-26, which most people would call Beaverton, but my mailing address was Portland, but I was at least 4 miles from anywhere people would actually call Portland.
I wonder how common these confusing city limits are in other metro areas.
The source data tends to not be incredibly accurate.
ZIP Codes are not geographical entities and don't correspond to geographical extent; rather, they are a hybrid between a discrete number of finite delivery-points and an abstract way of capturing a postal delivery route. They are often abused as geographical entities, which the Census Bureau has tried to rectify with ZCTAs [1], but it's unclear whether most informal use of ZIP Codes is haphazard, or actually conforms to ZCTAs.
However, ZIP Codes directly map to one preferred place name designated by the USPS, and zero or more acceptable alternative place names. These are usually inspired by, but don't necessarily correspond to municipalities and political units that the lots in question belong under.
For both 97003 and 97006, the USPS recommended place name is "BEAVERTON", and other acceptable names are "ALOHA" and "HILLSBORO".
Beaverton's city limits are complicated [3][4]. The city has a map of annexations as well [5]. Cedar Hill was once supposed to be annexed. A court case about the proposed annexation of the Nike HQ resulted in these plans being put on hold [6].
[1] https://www.census.gov/geo/reference/zctas.html [2] https://about.usps.com/news/state-releases/or/2014/or_2014_0... [3] https://www.beavertonoregon.gov/DocumentCenter/View/9005/Cit... [4] https://www.beavertonoregon.gov/DocumentCenter/View/5554/Bea... [5] https://www.beavertonoregon.gov/DocumentCenter/View/843/Anne... [6] https://www.oregonlive.com/oregonianextra/2006/06/appellate_...
Denver, CO: https://www.openstreetmap.org/relation/253750
Beaverton, Oregon: https://www.openstreetmap.org/relation/423111