<!--
{
  "availability" : [
    "iOS: 11.0.0 -",
    "iPadOS: 11.0.0 -",
    "macCatalyst: 13.1.0 -",
    "macOS: 10.13.0 -",
    "tvOS: 11.0.0 -",
    "visionOS: 1.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "MapKit",
  "identifier" : "/documentation/MapKit/MKAnnotationView/cluster",
  "metadataVersion" : "0.1.0",
  "role" : "Instance Property",
  "symbol" : {
    "kind" : "Instance Property",
    "modules" : [
      "MapKit"
    ],
    "preciseIdentifier" : "c:objc(cs)MKAnnotationView(py)clusterAnnotationView"
  },
  "title" : "cluster"
}
-->

# cluster

The clustering annotation view that replaces the annotation view.

```
weak var cluster: MKAnnotationView? { get }
```

## Discussion

When the map is displaying this annotation view, the value of this property is `nil`.

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)