# Locale Property Keys Predefined locale keys used to get property values. ## Discussion Locale objects use key-value pairs to store property values. Use the [`CFLocaleGetValue(_:_:)`](/documentation/CoreFoundation/CFLocaleGetValue(_:_:)) function to get the value of a specific property listed above. ## Topics ### Constants [`static let identifier: CFLocaleKey!`](/documentation/CoreFoundation/CFLocaleKey/identifier) Specifies locale identifier. [`static let languageCode: CFLocaleKey!`](/documentation/CoreFoundation/CFLocaleKey/languageCode) Specifies the locale language code. [`static let countryCode: CFLocaleKey!`](/documentation/CoreFoundation/CFLocaleKey/countryCode) Specifies the locale country code. [`static let scriptCode: CFLocaleKey!`](/documentation/CoreFoundation/CFLocaleKey/scriptCode) Specifies the locale script code. [`static let variantCode: CFLocaleKey!`](/documentation/CoreFoundation/CFLocaleKey/variantCode) Specifies the locale variant code. [`static let exemplarCharacterSet: CFLocaleKey!`](/documentation/CoreFoundation/CFLocaleKey/exemplarCharacterSet) Specifies the locale character set. [`static let calendarIdentifier: CFLocaleKey!`](/documentation/CoreFoundation/CFLocaleKey/calendarIdentifier) Specifies the locale calendar identifier. [`static let calendar: CFLocaleKey!`](/documentation/CoreFoundation/CFLocaleKey/calendar) Specifies the locale calendar. [`static let collationIdentifier: CFLocaleKey!`](/documentation/CoreFoundation/CFLocaleKey/collationIdentifier) Specifies the locale collation identifier. [`static let usesMetricSystem: CFLocaleKey!`](/documentation/CoreFoundation/CFLocaleKey/usesMetricSystem) Specifies the whether the locale uses the metric system. [`static let measurementSystem: CFLocaleKey!`](/documentation/CoreFoundation/CFLocaleKey/measurementSystem) Specifies the measurement system used. [`static let decimalSeparator: CFLocaleKey!`](/documentation/CoreFoundation/CFLocaleKey/decimalSeparator) Specifies the decimal point string. [`static let groupingSeparator: CFLocaleKey!`](/documentation/CoreFoundation/CFLocaleKey/groupingSeparator) Specifies the separator string between groups of digits. [`static let currencySymbol: CFLocaleKey!`](/documentation/CoreFoundation/CFLocaleKey/currencySymbol) Specifies the currency symbol. [`static let currencyCode: CFLocaleKey!`](/documentation/CoreFoundation/CFLocaleKey/currencyCode) Specifies the locale currency code. [`static let collatorIdentifier: CFLocaleKey!`](/documentation/CoreFoundation/CFLocaleKey/collatorIdentifier) Specifies the collation identifier for the locale. [`static let quotationBeginDelimiterKey: CFLocaleKey!`](/documentation/CoreFoundation/CFLocaleKey/quotationBeginDelimiterKey) Specifies the begin quotation symbol associated with the locale. [`static let quotationEndDelimiterKey: CFLocaleKey!`](/documentation/CoreFoundation/CFLocaleKey/quotationEndDelimiterKey) Specifies the end quotation symbol associated with the locale. [`static let alternateQuotationBeginDelimiterKey: CFLocaleKey!`](/documentation/CoreFoundation/CFLocaleKey/alternateQuotationBeginDelimiterKey) Specifies the alternating begin quotation symbol associated with the locale. In some locales, when quotations are nested, the quotation characters alternate. Thus, `NSLocaleQuotationBeginDelimiterKey`, then `NSLocaleAlternateQuotationBeginDelimiterKey`, and so on. [`static let alternateQuotationEndDelimiterKey: CFLocaleKey!`](/documentation/CoreFoundation/CFLocaleKey/alternateQuotationEndDelimiterKey) Specifies the alternating end quotation symbol associated with the locale. In some locales, when quotations are nested, the quotation characters alternate. Thus, `NSLocaleQuotationEndDelimiterKey`, then `NSLocaleAlternateQuotationEndDelimiterKey`, and so on. --- Copyright © 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)