Lang Son is a populated place in Vietnam. GeoNames lists its administrative area as Lạng Sơn Province.

Its mapped location is latitude 21.85264° and longitude 106.76101° (WGS84). The recorded IANA time zone is Asia/Bangkok. The country record uses the currency code VND. The source record reports a population of 200,108; this is a recorded figure, not a live population count.

The GeoNames record was last modified on 2026-04-14. Use this page to explore the street map, local time, weather and currency reference tools. Community guides and useful local links can be added separately.