---
title: minimumZ
framework: mapkit
role: symbol
role_heading: Instance Property
path: mapkit/mktileoverlay/minimumz
---

# minimumZ

The minimum zoom level that the tiles of this overlay object support.

## Declaration

```swift
var minimumZ: Int { get set }
```

## Discussion

Discussion If you use different overlay objects to represent different tiles at different zoom levels, use this property to specify the minimum zoom level supported by this overlay’s tiles. At zoom level 0, tiles cover the entire world map; at zoom level 1, tiles cover 1/4 of the world; at zoom level 2, tiles cover 1/16 of the world, and so on. The map never tries to load tiles for a zoom level less than the value specified by this property. The default value of this property is 0.

## See Also

### Accessing the tile attributes

- [tileSize](mapkit/mktileoverlay/tilesize.md)
- [isGeometryFlipped](mapkit/mktileoverlay/isgeometryflipped.md)
- [maximumZ](mapkit/mktileoverlay/maximumz.md)
- [canReplaceMapContent](mapkit/mktileoverlay/canreplacemapcontent.md)