Counties with close proximity to the Mexican border tend to have higher concentration of foreign born citizens, as well as urban areas in the Northeast, around Chicago in Illinois, and counties on the Northwestern corner.
Even though the counties along the Mexican border tend to have the highest concentrations of foreign born citizens, these do not observe the highest change in %. On the contrary, these counties have generally negative changes in %. Urban areas in the Northeast, around Chicago, and come counties on the Northwest, which had already high rates observed high increases in %.
Similar to the foreign born citizens, foreign born not citizen populations have higher concentrations in counties along the Mexican border, and close to urban centers of the Northeast, Chicago and the Northwestern corner. Foreign born not citizens represent a higher percentage of the population than the foreign born citizens.
The counties with the highest % of foreign born not citizens along the Mexican border observed low or negative change in % from 2000 till 2007. Counties across the eastern Midwest also had negative or almost no growth, while some counties in Florida, and some in California, Arizona and Nevada experienced more significant increases.
In general, we can observe that these two variables present very similar patterns, both in the percentage of the population that they represent and the change that happened between 2000 and 2007.