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Most Hispanics and Latinos are located in states along the border of Mexico. There counties closer to the border tend to have a higher percentage of Hispanics and Latinos. But next to all Hispanics and Latinos are located in the eastern half of the United States. There are not nearly as many in the western half of the US. There is a higher amount Hispanics and Latinos along the east coast.
The reason for most Hispanics and Latinos to be in that area is because generally immigrants would not have that much money to travel across the United States. So stay close to the border. Where they find jobs and begin to build their life in the US. Also the Hispanic and Latino population may have relatives and friends closer to the border, which would influence those that could afford it to stay closer to their friends and family. There are also jobs there. However many of these people are exploited with low salaries, but their are jobs none the less.
It makes a difference because it influences people perception of an area as well as altering its politician landscape. Its important for the states and counties to know know is living there and how to provide for them and to make plans for the areas future.