The first map above is title
“Difference, 1990-2000 Number of People” which illustrates the changes in the
number of people between the years 1990-2000. The map focus on how many people
change during 1990-2000 by illustrating the change in percentage. The dark
green areas show an increase of people in each county while the pink areas
illustrate a negative change in numbers of people in those counties. This is a
great map to see where populations grew and were populations drop during the
decade of 1990-2000.
The
second map above illustrates the population density in 2000 according to the
United States Census. The choropleth map illustrates the initiation of the
population change from low to high populations in the United States. The darker colors for example the dark blue
illustrates where the high density populations were located in 2000. One of the
highest density areas was located in Southern California. Los Angeles County is one of the highest
population densities in the United States. The light green colors illustrated the less
density areas for example the mid-west.
The
third map above is title "Percent Change, 1996-2000 Total Population"
that illustrates the increase in population in certain counties and also shows
the areas where it decreased between the years 1996 -2000. In the dark purple
areas the map illustrates an increase while the lighter color purple areas only
had a minor increase of population. The pink areas in the map illustrate that
the population in the area remain the same while the yellow and orange areas represent
the areas that lost population. This means that the population decline between
1996 and 2000. The areas with the highest population were located in Nevada.
The last map above illustrates
the number of people in 2000. The maps goal is to identify where people resided
during 2000. This map uses purple and blue to illuminate the map. The areas
with dark purple illustrated the highest populated locations in the United
States. The light blue color was the areas with the
least people for example areas in the mid-west. The areas with the highest populations
were the East and West coast. This map provides
people with a different perspective on where people resided in 2000.
Through the use of Census Data
and GIS it allows people to understand what is being presented. There is a lot
of data available through the Census websites that allows users to produce maps
that convey and illustrates the changes of population. The data show patterns
that illustrate the changes in the last decade which some are similar. The overall
impressions in the Census GIS exercise can be complicated in the begging, but
with time the user will feel more comfortable with the program. The hard part
of the exercise can be finding the data that works with GIS.
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