countrycityserial
Countrycityserial is a proposed naming and identification concept designed to produce unique identifiers for urban locations by combining a country code, a city code, and a sequential serial number. It is not an official standard, but a model used in data schemas and private databases for geographic indexing and record linkage.
The typical form comprises three components: a country code (commonly the ISO 3166-1 alpha-2 code), a city
Applications include large-scale data integration, logistics, mapping, digital catalogs, and government information systems where stable, human-readable
Challenges involve achieving and maintaining a consistent city-code standard, handling changes in city boundaries or names,
In practice, countrycityserial appears mainly in informal discussions or within private systems. It overlaps with established
See also: ISO 3166, ISO 3166-2, locality code, geocoding, place identifiers.