(CNN) -- President Barack Obama travels south to Mexico this week to meet with Mexican President Enrique Peña Nieto in the country's capital before he heads to Costa Rica to meet with other regional leaders. Here's a look at the relationship between the United States and Mexico, by the numbers: 1,933 miles: Length of the border between the United States and Mexico. 32: Visits by U.S. presidents to Mexico. 3: Times that President Barack Obama has traveled to Mexico, most recently in June 2012, to attend the G-20 Economic Summit. 5: Times former Secretary of State Hillary Clinton visited Mexico while she was in office from 2009 to 2012.
@highlight
U.S. leaders have made 32 visits to Mexico; Mexican leaders have visited the U.S. 54 times
@highlight
Almost a third of the foreign-born population in the U.S. was born in Mexico
@highlight
This week's visit will be Obama's third to Mexico and his first since Enrique Peña Nieto's election
51: Percentage of the vote received by President @placeholder in the 2012 U.S. presidential election.