Wrong Destination Area Code. Move and center the map on the address you want to add. Vote and comment on others rants.
An out-of-date iOS can account for software bugs that suddenly scramble your location accuracy. If your iPhone location is still wrong even after you reset Location Services try doing a backup and restoring your iPhone from iTunes. It continues to show code 98Im rooted running the blazer 17 but have flashed the PA from as well.
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Scroll bottom to see your location. Then you can correct and update your address. In the old pre-automation days your mailpeice would probably get to the right place a little quicker. To check this run a traceroute using the following command.