scope.url = "http://kladr-api.ru/api.php?"

город

query_string = "callback=JSON_CALLBACK" + 
                                     "&key=" + scope.key + 
                                     "&token=" + scope.token +
                                     "&limit=" + scope.limit + 
                                     "&contentType=city" +
                                     "&query=" + scope.city
                    $http.jsonp(scope.url + query_string).success(function(data) {
                        scope.result_city = data.result;
                        scope.change = true;
                    });

после улица

scope.cityId = scope.result_city[index].id;

query_string = "callback=JSON_CALLBACK" + 
                                     "&key=" + scope.key + 
                                     "&token=" + scope.token +
                                     "&limit=" + scope.limit + 
                                     "&contentType=street" +
                                     "&cityId=" + scope.cityId +
                                     "&query=" + scope.address
                    $http.jsonp(scope.url + query_string).success(function(data) {
                       scope.result_street = data.result;
                       scope.change = true;
                    });