| Surname | Population | % Correct |
|---|---|---|
| Hernandez | 305,000 | 79%
|
| Garcia | 1,378,000 | 78%
|
| Rodriguez | 804,000 | 75%
|
| Martin | 459,000 | 73%
|
| Fernandez | 851,000 | 72%
|
| Lopez | 796,000 | 72%
|
| Martinez | 788,000 | 72%
|
| Sanchez | 725,000 | 72%
|
| Gonzalez | 839,000 | 70%
|
| Gomez | 440,000 | 67%
|
| Perez | 709,000 | 66%
|
| Ramirez | 95,000 | 49%
|
| Jimenez | 293,000 | 45%
|
| Torres | 134,600 | 43%
|
| Alvarez | 273,000 | 42%
|
| Diaz | 293,000 | 42%
|
| Gutierrez | 170,000 | 39%
|
| Ortega | 99,000 | 31%
|
| Alonso | 206,000 | 28%
|
| Morales | 95,000 | 27%
|
| Ramos | 118,000 | 25%
|
| Ruiz | 321,000 | 25%
|
| Suarez | 102,900 | 25%
|
| Blanco | 118,000 | 22%
|
| Moreno | 261,000 | 22%
|
| Ortiz | 87,120 | 22%
|
| Castro | 102,900 | 18%
|
| Dominguez | 134,600 | 16%
|
| Iglesias | 83,160 | 16%
|
| Romero | 170,000 | 16%
|
| Munoz | 241,000 | 15%
|
| Vazquez | 130,000 | 12%
|
| Rubio | 99,000 | 10%
|
| Sanz | 106,900 | 10%
|
| Delgado | 95,000 | 9%
|
| Gil | 134,600 | 9%
|
| Navarro | 158,400 | 9%
|
| Marin | 83,160 | 7%
|
| Molina | 99,000 | 7%
|
| Serrano | 122,700 | 6%
|