How can I trigger an automatic push notification when a user enters any one of several different geographic locations?

Create one geozone per location, then decide how they share frequency limits.

1. Go to Campaigns → Geo campaigns and click Create geozone for each location, or click Import CSV to create them all from a spreadsheet (Name, Latitude, Longitude, plus optional Range, m, Cooldown, s, Message, Cluster code, Preset code).
2. In Entry actions, keep Send push on to send a push the moment a device enters, or turn on Fire event to fire PW_GeozoneEntered (or your own event name) and use it as a trigger-based entry into a journey. The event carries geozone_code and geozone_name, plus cluster_code and cluster_name if the geozone is in a cluster, so one journey can handle every location.
3. Set the trigger location as a Circle (50 m to 100 km) or a Polygon that outlines the area.
4. In Cooldown, choose Standalone (applies to that geozone only, 1 minute to 41 days) or Use existing cluster / New cluster. A cluster cooldown overrides the geozone's own: once a device gets a push from any geozone in the cluster, every geozone in that cluster stays silent until the cooldown expires.
5. Set the Campaign schedule and click Save. The geozone is enabled immediately.

Prerequisites: the Pushwoosh SDK with location tracking enabled, and the user's location permission (background location on Android 10+). Not available on HMS (Huawei) devices.

Learn more: Create a geozone