<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED AUDITED FINANCIAL STATEMENTS FOR THE YEAR ENDED DECEMBER 31, 1997
AND THE CONSOLIDATED UNAUDITED FINANCIAL STATEMENTS FOR THE SIX MONTHS ENDED
JUNE 30, 1998.
</LEGEND>
<CIK> 0001070677
<NAME> US XCHANGE LLC
       
                                                  
<PERIOD-TYPE>                   YEAR                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1997             DEC-31-1998
<PERIOD-START>                             JAN-01-1997             JAN-01-1998
<PERIOD-END>                               DEC-31-1997             JUN-30-1998
<CASH>                                         100,590             111,837,895
<SECURITIES>                                         0              24,569,509
<RECEIVABLES>                                  145,235                 944,744
<ALLOWANCES>                                         0                       0
<INVENTORY>                                          0                       0
<CURRENT-ASSETS>                               406,433             137,913,254
<PP&E>                                      28,157,088              62,226,300
<DEPRECIATION>                                 189,347               1,262,097
<TOTAL-ASSETS>                              28,385,270             263,680,917
<CURRENT-LIABILITIES>                        6,123,659              20,896,183
<BONDS>                                      2,189,000             203,000,000
<PREFERRED-MANDATORY>                                0                       0
<PREFERRED>                                          0                       0
<COMMON>                                     5,000,000              60,000,000
<OTHER-SE>                                 (5,966,178)            (20,215,266)
<TOTAL-LIABILITY-AND-EQUITY>                28,385,270             263,680,917
<SALES>                                              0                       0
<TOTAL-REVENUES>                               206,682               1,984,403
<CGS>                                                0                       0
<TOTAL-COSTS>                                6,004,598               4,007,146
<OTHER-EXPENSES>                                     0              11,807,814
<LOSS-PROVISION>                                     0                       0
<INTEREST-EXPENSE>                              30,452                 630,196
<INCOME-PRETAX>                            (5,828,368)            (14,249,088)
<INCOME-TAX>                                         0                       0
<INCOME-CONTINUING>                        (5,828,368)            (14,249,088)
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                               (5,828,368)            (14,249,088)
<EPS-PRIMARY>                                        0                       0
<EPS-DILUTED>                                        0                       0