In 2009, delegations comprised of 885 international dignitaries representing 84 countries made official visits to the California Senate. The countries, ranked by number of visitors, were as follows: | |||
| COUNTRY | # VISITORS | COUNTRY | # VISITORS |
| CHINA | 305 | ROMANIA | 2 |
| DENMARK | 56 | SWEDEN | 2 |
| PAKISTAN | 53 | ZAMBIA | 2 |
| AUSTRAILIA | 29 | ALBANIA | 1 |
| CANADA | 27 | ALGERIA | 1 |
| FRANCE | 26 | BANGLADESH | 1 |
| JAPAN | 23 | BARBADOS | 1 |
| GERMANY | 21 | CAMEROON | 1 |
| NETHERLANDS | 22 | CYPRUS | 1 |
| RUSSIA | 22 | TIMOR-LESTE | 1 |
| MEXICO | 20 | ERITREA | 1 |
| BELGIUM | 19 | EUROPEAN UNION | 1 |
| ITALY | 19 | GREECE | 1 |
| UNITED KINGDOM | 17 | GUINEA | 1 |
| IRAN | 12 | HAITI | 1 |
| ISRAEL | 11 | IRAQ | 1 |
| GEORGIA | 11 | JAMAICA | 1 |
| INDIA | 11 | KOSOVO | 1 |
| AZERBAIJAN | 8 | LATVIA | 1 |
| BRAZIL | 8 | MALAYSIA | 1 |
| CHILE | 8 | MOZAMBIQUE | 1 |
| BULGARIA | 7 | NAMIBIA | 1 |
| EL SALVADOR | 7 | NEW ZEALAND | 1 |
| NIGERIA | 7 | NORWAY | 1 |
| SPAIN | 7 | PORTUGAL | 1 |
| UGANDA | 7 | QATAR | 1 |
| CZECH REPUBPLIC | 6 | SAMOA | 1 |
| POLAND | 6 | SENEGAL | 1 |
| EGYPT | 5 | SLOVAK REPUBLIC | 1 |
| HUNGARY | 5 | SOUTH AFRICA | 1 |
| MOLDOVA | 5 | SRI LANKA | 1 |
| BOSNIA-HERZEGOVINA | 4 | SWITZERLAND | 1 |
| KYRGYZSTAN | 4 | TANZANIA | 1 |
| PANAMA | 4 | THAILAND | 1 |
| SOUTH KOREA | 4 | TRINIDAD & TOBAGO | 1 |
| COSTA RICA | 3 | TUNISA | 1 |
| MADAGASCAR | 3 | UKRAINE | 1 |
| SAUDI ARABIA | 3 | UNITED ARAB EMIRATES | 1 |
| INDONESIA | 2 | URUGUAY | 1 |
| JORDAN | 2 | UZBEKISTAN | 1 |
| MOROCCO | 2 | WEST BANK AND GAZA | 1 |
| PERU | 2 | YEMEN | 1 |
The delegations studied a wide range of subjects, which are ranked below according to the number of visitors who studied them: | |||
| SUBJECT | # VISITORS | SUBJECT | # VISITORS |
| Legislative Process and Government | 332 | Budget/Finance | 24 |
| International Relations | 244 | Health | 20 |
| Environment | 190 | Transportation | 13 |
| Energy | 72 | Education | 7 |
| Int'l Trade/Economic Development | 59 | Media Relations | 7 |
| Agriculture | 40 | Gender | 1 |
| Natural Resources/Water | 32 | Social | 1 |
| Public Safety | 26 | ||