Hi @flask, this sounds like it may be an issue with how Google or Apple describes places in text based on GPS coordinates, which gets entered into the Locality Notes section on iNat. Can you provide some examples so we can help troubleshoot?
You can use the Explore page to view observations in a certain area and/or you (or someone else) can upload the boundaries of your town. But uploading a new place to iNat doesn’t change the locality notes that were generated by Google and Apple or written by individual observers.