Microstates Relationship Population Area (km2) GDP (nom) HDI Andorra Agreements 85,458 467 $4.510 billion 0.845 Liechtenstein EEA State 37,340 160 $5.155 billion 0.908 Luxembourg EU State 562,958 2,586 $57.9 billion 0.892 Malta EU State 445,426 316 $10.582 billion 0.839 Monaco Agreements 37,800 2 $5.424 billion n/a San Marino Agreements 32,576 61 $1.44 billion n/a Vatican City Agreements 842 0.44 n/a n/a