System identyfikatorów i nazw miejscowości, ("System for IDs and names of places") or SIMC, is a Polish government scheme to create unique identifiers for places.
It is part of the Krajowy Rejestr Urzędowego Podziału Terytorialnego Kraju (TERYT, or "National Register of Territorial Divisions of the Country").
The system is managed by the Główny Urząd Statystyczny ("Central Statistical Office").
SIMC is a registry of names of places and their constituent parts, including the following information:[1][2] SIMC IDs and place names are updated on a regular basis after changes of official names of places and changes in the basic territorial divisions of the state.
SIMC IDs are unique and permanent.