WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

  


                                                                    EXHIBIT 27.1

<ARTICLE>                     5
<LEGEND>

THIS SCHEDULE CONTAINS SUMMARY FINANCIAL  INFORMATION EXTRACTED FROM THE BALANCE
SHEET OF KMC TELECOM  HOLDINGS,  INC.  AS OF  DECEMBER  31, 1999 AND THE RELATED
STATEMENT OF OPERATIONS  FOR THE YEAR ENDED  DECEMBER 31, 1999, AND IS QUALIFIED
IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.

</LEGEND>
<MULTIPLIER>                                         1

                                       
<PERIOD-TYPE>                                  12-MOS
<FISCAL-YEAR-END>                          Dec-31-1999
<PERIOD-START>                              Jan-1-1999
<PERIOD-END>                                Dec-1-1999
<CASH>                                      85,966,000
<SECURITIES>                                         0
<RECEIVABLES>                               32,924,000
<ALLOWANCES>                                (5,551,000)
<INVENTORY>                                          0
<CURRENT-ASSETS>                           151,839,000
<PP&E>                                     676,291,000
<DEPRECIATION>                             (36,967,000)
<TOTAL-ASSETS>                             886,040,000
<CURRENT-LIABILITIES>                      208,846,000
<BONDS>                                    576,137,000
<PREFERRED-MANDATORY>                      250,470,000
<PREFERRED>                                          0
<COMMON>                                         6,000
<OTHER-SE>                                (384,419,000)
<TOTAL-LIABILITY-AND-EQUITY>               886,040,000
<SALES>                                              0
<TOTAL-REVENUES>                            64,313,000
<CGS>                                                0
<TOTAL-COSTS>                              110,309,000
<OTHER-EXPENSES>                           114,713,000
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                          69,411,000
<INCOME-PRETAX>                           (225,716,000)
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                       (225,716,000)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                              (225,716,000)
<EPS-BASIC>                                  (360.88)
<EPS-DILUTED>                                  (360.88)