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Geocoding

This guide presents geocoding concepts, datasets, tools, workflows, and resources.

Welcome

Geocoding is the process of converting a textual representation of place—such as an address or a place name—into spatial coordinates that can be added to a map.

For more in-depth information on geocoding, check out the resources in the Documentation and Training section of this research guide.

We've recommended two options for geocoding below, and you can find more in the Address Locators section of this research guide.

For smaller projects

The cloud-based ArcGIS World Geocoding Service is provided by ESRI as the default locator in ArcGIS Online, and also in ArcGIS Pro as long as the user is logged into their ArcGIS Online account in the application.

Batch geocoding (converting many addresses at once) with this service uses 40 credits per 1,000 geocodes. By default WashU users are provided 500 credits, so this option cannot be used if you have more than 12,500 addresses.

Individual addresses can be located at no cost using the appropriate search function in any of the ESRI suite of software.

See the Geocoding Workflows and Documentation and Training pages of this guide for more details on using the ArcGIS World Geocoding Service in ArcGIS online and ArcGIS Pro.

For larger projects

ArcGIS StreetMap Premium (SMP) includes an address locator that is updated several times per year and is the most current “in-house” address locator available to the WashU community. Our subscription gives us access to the North America and Latin America datasets. If your project will require geocoding more than 12,500 addresses outside the Americas please contact Data Services so we can help you find a solution.

We offfer three different ways of accessing SMP:

  • A geocoding service based on our latest copy of the SMP database is available to ArcGIS Pro users who are connected to the WashU secure network either directly or through the VPN. This service provides geocoding functionality without requiring users to download and install data on their local system. See the StreetMap Premium page for more details on how to access it.
  • The locator can also be accessed directly on one of the Research Studio computers.
  • Those who wish to download and install this product for local (HIPAA compliant) processing can request access and licensing by completing the Streetmap Premium Request Form. Once the request is submitted, you will receive a link to the download folder and instructions on how to install and activate the dataset.