Researchers often have a database of addresses as a starting point for sampling design. They often want to sample from some geographic unit like a neighborhood. To do this, they need geospatial data, which is a set of coordinates that represent the boundaries of the geographic unit, and software capable of locating these coordinates. This is called geolocation. This brief describes the performance of two tools that IPA Colombia used to sample respondents based on geolocated data. The Google Geolocation API and QGIS outperformed ArcGIS in terms of geolocation accuracy by a substantive margin