In a method for providing a location information service based upon a user's location, when a user is currently located within a preferred location or preferred area set by the user to apply privacy with respect to a transmission of location information thereto, a procedure for requesting the user's authorization is performed before transmitting the user's location information, namely, a location server checks a location information request for the user located within the preferred location or preferred area according to a privacy profile within the corresponding location or area and performs a user notification and verification process according to the privacy profile, to thereafter determine whether to forward the location information according to the result of the verification.