I have a bunch of 'points' in a csv that contain a zip code and lat/long coordinates. I also downloaded the ZCTA boundary data from the census website. I successfully imported the point layer on top of the zip boundary layer, however, I'd like to determine if there are any 'points' that lie outside of it's associated zip boundary layer.
1) Points = Zip Code, Latitude, Longitude 2) Zip Boundary Shapefiles
Basically I want to determine which points' latitude/longitude (and zip code) does not line up with its corresponding zip boundary layer. I definitely know this is possible, and I can also do it manually by hand, but
How do I do this for a set of points using QGIS?