---
title: CLCircularRegion
framework: corelocation
role: symbol
role_heading: Class
path: corelocation/clcircularregion
---

# CLCircularRegion

A circular geographic region that a center point and radius deine.

## Declaration

```swift
class CLCircularRegion
```

## Overview

Overview The CLCircularRegion class defines the location and boundaries for a circular geographic region. You can use instances of this class to define geofences for a specific location. The crossing of a geofence’s boundary causes the location manager to notify its delegate.

## Topics

### Creating a circular region

- [init(center:radius:identifier:)](corelocation/clcircularregion/init(center:radius:identifier:).md)

### Getting the circle’s center and radius

- [center](corelocation/clcircularregion/center.md)
- [radius](corelocation/clcircularregion/radius.md)

### Performing hit testing in the region

- [contains(_:)](corelocation/clcircularregion/contains(_:).md)

## Relationships

### Inherits From

- [CLRegion](corelocation/clregion.md)

### Conforms To

- [CVarArg](swift/cvararg.md)
- [CustomDebugStringConvertible](swift/customdebugstringconvertible.md)
- [CustomStringConvertible](swift/customstringconvertible.md)
- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [NSCoding](foundation/nscoding.md)
- [NSCopying](foundation/nscopying.md)
- [NSObjectProtocol](objectivec/nsobjectprotocol.md)
- [NSSecureCoding](foundation/nssecurecoding.md)

## See Also

### Classes

- [CLBeaconRegion](corelocation/clbeaconregion.md)
- [CLBeaconIdentityConstraint](corelocation/clbeaconidentityconstraint.md)