Mapping Census 2000

This assignment was to map different information from the 2000 Census of the United States of America. The first of the four maps I made displays the number of people in the US in the year 2000. These values were calculated from the Census information of that year in which the US surveyed as many households as they could asking about how many people live in the household. The color ramp I selected shows the lower values in lighter colors and the higher numbers in the darker values. This selection of colors is a good choice because it allows the viewer to make clearer distinctions between the number of people in areas. 

The second map I made shows the difference of the number of people from 1990 to 2000 in the US. These values are calculated by comparing the Census information from 1990 to 2000 in the US and measuring the positive and negative difference of people in each area. The color ramp selected displays darker greenish colors for the positive difference, and pink colors for the more negative population differences. This allows the viewer to clearly see a color contrast based on the positive or negative difference. 

The third map I made displays the percentage difference from 1990 to 2000 in the US. These values are calculated by difference of the population of the decade and diving by the amount of people in 2000. The color ramps for this map is similar to the previous map where it has two different colors displaying the positive and negative percent change from 1990 to 2000. The purple colors are the positive change and the yellow colors are the more negative changes. This is good because it allows the viewer to make the clear distinctions of positive and negative percent change in population from 1990 to 2000. 

Finally, the fourth map I made shows the population density of the US in 2000. The values of this map are calculated by dividing the population by the area. The color ramp is similar to the first map, where the darker blue colors mean a higher density, and the lighter greenish colors are then lower density of that area. These maps are helpful in letting us know the amount of people there are in the US and which areas are developing faster in comparison to those that are losing people.