This patent discloses methods and systems for remotely requesting a flood zone determination from a mobile device such as a smart phone. The methods and systems use the GPS receiver in the mobile device to determine the exact latitude and longitude of the user's location, thus eliminating the need for geocoding, eliminating errors introduced by manual data entry, and eliminating the need for the time consuming manual determination processes required, for example, for non-standard-addressed locations and for structures located near a 100-year flood zone.