If you plot the provided Canada boundary and Toronto lat/long values, it looks like this: http://www.gcmap.com/mapui?P=83.13N+52.61W+-+83.13N+141W+-+41.72N+141W+-+41.72N+52.61W+-+83N+53W,+44N+79W Toronto indeed falls outside the given boundary, so it's not fetched as a match. I've actually fallen for this exact issue before 🙂 While the individual lat/long values that make up the Canada boundary is correct, the geodesic (shortest path) connecting them is not a straight line on this projection (Mercator), which I think bboxfinder uses. I suspect it's not easy to represent Canada accuractely using a 4 sided polygon because of how the lines connect over the spherical earth.