Marker Cluster 
Use the MarkerCluster component to display a large number of markers on a map. It will combine markers of close proximity into clusters, and simplify the display of markers on the map. Can be used with the Marker or CustomMarker components.
Usage 
Simply pass your Marker/CustomMarker(s) in the default slot of the MarkerCluster component.
vue
<script setup>
import { GoogleMap, Marker, MarkerCluster } from 'vue3-google-map'
const center = { lat: -28.024, lng: 140.887 }
const locations = [
  { lat: -31.56391, lng: 147.154312 },
  { lat: -33.718234, lng: 150.363181 },
  { lat: -33.727111, lng: 150.371124 },
  { lat: -33.848588, lng: 151.209834 },
  { lat: -33.851702, lng: 151.216968 },
  { lat: -34.671264, lng: 150.863657 },
  { lat: -35.304724, lng: 148.662905 },
  { lat: -36.817685, lng: 175.699196 },
  { lat: -36.828611, lng: 175.790222 },
  { lat: -37.75, lng: 145.116667 },
  { lat: -37.759859, lng: 145.128708 },
  { lat: -37.765015, lng: 145.133858 },
  { lat: -37.770104, lng: 145.143299 },
  { lat: -37.7737, lng: 145.145187 },
  { lat: -37.774785, lng: 145.137978 },
  { lat: -37.819616, lng: 144.968119 },
  { lat: -38.330766, lng: 144.695692 },
  { lat: -39.927193, lng: 175.053218 },
  { lat: -41.330162, lng: 174.865694 },
  { lat: -42.734358, lng: 147.439506 },
  { lat: -42.734358, lng: 147.501315 },
  { lat: -42.735258, lng: 147.438 },
  { lat: -43.999792, lng: 170.463352 },
]
</script>
<template>
  <GoogleMap
    api-key="YOUR_GOOGLE_MAPS_API_KEY"
    style="width: 100%; height: 500px"
    :center="center"
    :zoom="3"
  >
    <MarkerCluster>
      <Marker
        v-for="(location, i) in locations"
        :key="i"
        :options="{ position: location }"
      />
    </MarkerCluster>
  </GoogleMap>
</template>Options 
MarkerCluster accepts an options prop (an object) where you can configure algorithm, onClusterClick, and renderer from the MarkerClustererOptions interface. Note that all these options are completely optional but non-reactive.
Events 
You can listen for the following events on the MarkerCluster component.