Find area zip codes within driving distance of a facility

Summary

In ArcGIS Pro, area zip codes within a specified distance can be identified to determine if they are within the service area of a facility. For instance, the city council can determine the best location to construct a hospital in an area that provides the best coverage while maintaining optimum response time based on the distance of these zip codes from the hospital.

In this example, a proposed hospital is to be constructed on Hawaii Island, and a point layer of zip codes generated from a Microsoft Excel spreadsheet is used to determine how many zip codes are within a 15 kilometer range from the hospital, as shown in the image below.

This article provides instructions to find the zip codes within driving distance of a facility using the Generate Service Areas tool, and the Spatial Join tool.

Procedure

1. Navigate to the Geoprocessing pane. Click Toolboxes > Network Analyst Tools > Analysis > Generate Service Areas.
2. For Facilities, select the facility at which a service area is generated. For this example, it is Hospital.
3. For Break Values, specify the distance that determines the size of the service area polygon. For this example, it is 15.
4. For Break Units, select Kilometers from the drop-down menu.
5. For Travel Mode, type in Driving Distance.

6. Click Run. A network analysis layer is generated on the map, as shown in the image below.

7. Navigate to the Geoprocessing pane. Click Toolboxes > Analysis Tools > Overlay > Spatial Join.
8. For Target Features, select the zip code layer.
9. For Join Features, select the service area layer generated from the Make Service Area tool.
10. For Output Feature Class, specify an output name in the desired geodatabase location.
11. For Join Operation, select Join one to many from the drop-down menu.
12. Uncheck the Keep All Target Features checkbox.
13. For Match Option, select Intersect.
14. Click Run. Only zip codes within the driving distance of the facility are displayed on the map, as shown in the image below.