|Date of birth||7 May 1990|
|Place of birth||Adelaide, Australia|
|Height||1.85 m (6 ft 1 in)|
|2010||→ Adelaide Cobras (loan)||5||(1)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 11 September 2017.
AEK Athens and Panionios
In January 2010 Kostopoulos signed for Adelaide United in Hyundai A-League. On 30 January 2010, Kostopoulos made his senior debut for Adelaide United replacing Adam Hughes in the 79th minute in the match against Wellington Phoenix. At the end of the 2009–2010 A-League season Kostopoulos was loaned to Adelaide Cobras for 2010–2011 season.
On 14 April 2012, in the 2011–2012 A-League season it was announced that Kostopoulos had signed a one-year undisclosed contract with Adelaide United until the end of the 2012–2013 A-League season. Kostopoulos scored his first A-League goal against Melbourne Victory in a 4–2 home victory.
Sydney Olympic FC
In November 2013, Evan Kostopoulos met with Sydney Olympic FC officials and signed a deal with the Belmore-based club. His signature has been met with much praise from fans already, given his proven quality in the A-League.
- Adelaide signs youth striker. theworldgame.sbs.com.au. 14 April 2012. Retrieved 14 April 2012.
- "Case of deja vu as Reds go down to Wellington". Adelaide United. 30 January 2010. Retrieved 31 January 2010.