---
title: ClusterAnnotation
framework: mapkitjs
role: symbol
role_heading: Class
path: mapkitjs/clusterannotation
---

# ClusterAnnotation

An annotation type that groups multiple annotations together.

## Declaration

```data
class ClusterAnnotation extends MarkerAnnotation
```

## Discussion

Discussion The framework creates a ClusterAnnotation when it groups annotations in a cluster. You can replace the annotation or update its properties using the annotationForCluster delegate method.

## Topics

### Instance Properties

- [memberAnnotations](mapkitjs/clusterannotation/memberannotations.md)

## Relationships

### Inherits From

- [MarkerAnnotation](mapkitjs/markerannotation.md)