<TABLE> <S> <C>
<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATIN EXTRACTED FROM SBA
COMMUNICATIONS 10-Q 6/30/00 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO
SUCH FINANCIAL STATEMENT.
</LEGEND>
<S> <C> <C>
<PERIOD-TYPE> 6-MOS 6-MOS
<FISCAL-YEAR-END> DEC-31-1999 DEC-31-2000
<PERIOD-START> JAN-01-1999 JAN-01-2000
<PERIOD-END> JUN-30-1999 JUN-30-2000
<CASH> 3,130,912 27,199,049
<SECURITIES> 0 0
<RECEIVABLES> 23,430,076 34,111,132
<ALLOWANCES> (785,299) (1,236,947)
<INVENTORY> 0 0
<CURRENT-ASSETS> 33,611,213 75,860,538
<PP&E> 362,503,348 543,871,311
<DEPRECIATION> (23,611,835) (36,836,101)
<TOTAL-ASSETS> 429,823,226 640,493,584
<CURRENT-LIABILITIES> 54,556,360 77,351,238
<BONDS> 186,041,542 197,206,522
0 0
0 0
<COMMON> 291,910 396,582
<OTHER-SE> 48,290,337 283,109,837
<TOTAL-LIABILITY-AND-EQUITY> 429,823,226 640,493,584
<SALES> 33,121,573 68,931,911
<TOTAL-REVENUES> 33,121,573 68,931,911
<CGS> 21,787,284 44,543,378
<TOTAL-COSTS> 21,787,284 44,543,378
<OTHER-EXPENSES> 0 0
<LOSS-PROVISION> 0 0
<INTEREST-EXPENSE> 13,119,276 17,095,974
<INCOME-PRETAX> (16,517,260) (17,054,007)
<INCOME-TAX> 575,901 (577,037)
<INCOME-CONTINUING> (15,941,359) (17,631,044)
<DISCONTINUED> 0 0
<EXTRAORDINARY> (1,149,954) 0
<CHANGES> 0 0
<NET-INCOME> (17,091,313) (17,631,044)
<EPS-BASIC> (1.06) (.47)
<EPS-DILUTED> (1.06) (.47)
</TABLE>