locale-codes is used at run time in 4 crates (of which 2 optionally). It is a direct run-time dependency in 2 crates. It's used only as a dev dependency in 1 crate.

Depender (with downloads and own rev deps) locale-codes version
1 db_ip_macros ^0.3
locale-strict ^0.3.0
locale-settings dev ^0.3