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- In the Catalog pane, add the US_tract_2010_harriscounty feature and US_tract_1980_harriscounty feature class to the Houston History Map view.
- In the Contents pane, right-click the US_tract_2010_harriscounty layer name and select Symbology.
- Use the primary 'Symbology' drop-down menu to select Graduated Colors.
- Use the 'Field' drop-down menu to scroll down sixth from the bottom and select the AV0AA2000 field. This field stores the total number of persons per census tract in the year 2000.
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