Color-coded ZIP code maps use a range of colors to illustrate various ranges of data. Each color represents a simple value. For example each individual ZIP code can be assigned a unique color based on a value. You can also save a palette of color styles as templates. This is great when you want to create similar maps on a regular basis. You can then easily reuse these styles as you update and reload new versions of your data. Learn how to create your own color-coded ZIP code maps with our quick how-to guide.
What is a color-coded map?
A color-coded ZIP code map is a map that has different colorized ZIP code areas where each color represents a simple value. For example, each ZIP code could be differentiated and highlighted by an individual color. This makes it easy to see the different independent ZIP codes (their “value”) and their geographic boundaries.
Grouping and coding ZIP codes
Alternatively, you could group a number of ZIP codes by color, to represent the same or similar values. An example of this would be a service coverage map where ZIP code regions that are covered by a service team in green versus not covered in red.
Attach spreadsheet data to colored regions
eSpatial allows you to upload Excel data and automatically attach it (“link to boundaries”) to each colorized ZIP code. This allows values to be color coded on the map (e.g., covered or not covered) but can also attach additional spreadsheet data to a geographic boundary. In the service coverage map, if a ZIP is selected, an information box could open, revealing additional data such as number of customers, number of service engineers.
Color code vs. heat map
Color-coded maps are great for simple, clear communication of distinct values that can be expressed in text form. For example, covered and not covered. However, where there is a range of integer values to be expressed, then a heat map is the best solution. Representing US population density on a map, for example, you could use different shades of red — dark red would indicate high density, while light red/pink would indicate low density. A range of shades that occupy the space in between these extreme values would be also expressed on the map.
Layer other data onto a color-coded ZIP code map
eSpatial makes it easy to create a color-coded ZIP code map and also gives you the flexibility to save that map and use it repeatedly for different analyses. In the case of the service coverage map, for example, you could plot the number of competitors in each region.