<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
FINANCIAL STATEMENTS FOR ADC TELECOMMUNICATIONS, INC. AND SUBSIDIARIES FOR
THE SIX-MONTH PERIOD ENDED APRIL 30, 1999 AND IS QUALIFIED IN ITS ENTIRETY BY
REFERENCE TO SUCH FINANCIAL STATEMENTS.


<MULTIPLIER> 1,000

                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          OCT-31-1999
<PERIOD-START>                             NOV-01-1998
<PERIOD-END>                               APR-30-1999
<CASH>                                         171,528
<SECURITIES>                                    41,285
<RECEIVABLES>                                  358,811
<ALLOWANCES>                                     7,942
<INVENTORY>                                    215,759
<CURRENT-ASSETS>                               856,216
<PP&E>                                         559,119
<DEPRECIATION>                                 265,948
<TOTAL-ASSETS>                               1,465,442
<CURRENT-LIABILITIES>                          336,082
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        27,216
<OTHER-SE>                                   1,088,352
<TOTAL-LIABILITY-AND-EQUITY>                 1,465,442
<SALES>                                        860,885
<TOTAL-REVENUES>                               860,885
<CGS>                                          452,776
<TOTAL-COSTS>                                  452,776
<OTHER-EXPENSES>                               342,657
<LOSS-PROVISION>                                 2,307
<INTEREST-EXPENSE>                               5,914
<INCOME-PRETAX>                                 64,285
<INCOME-TAX>                                    28,677
<INCOME-CONTINUING>                             35,608
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    35,608
<EPS-BASIC>                                       0.13
<EPS-DILUTED>                                     0.13

<F1>AMOUNT IS NET OF ALLOWANCE FOR BAD DEBT AND RETURNS
<F2>AMOUNT IS NET OF OBSOLESCENCE RESERVES