Which countries are in the European association?

You probably mean EU Association Agreements between EU-states and non-members,

here it goes the list of contries that EU has agreement for cooperation with :

Albania (2009)

Algeria (2005)

Andorra (1991)

Bosnia and Herzegovina ( 2008)

Chile (2003)

Croatia (2005)

Egypt (2004)

Faroe Islands, autonomous entity of Denmark (1997)

Iceland (1994)

Israel (2000)

Jordan (2002)

Lebanon (2006)

Liechtenstein (1994)

Macedonia[1] (2004)

Mexico (2000)

Montenegro (2010)

Morocco (2000)

Norway (1994)

Palestinian Authority interim (1997)

San Marino (2002)

Serbia ( 2008)

South Africa (2000)

Switzerland (1973)

Tunisia (1998)

Turkey (1996)