Place names through time

Search a current name, a former name or coordinates; click (or long-press on a phone) to pin a location; drag the timeline to see each year’s names.

Search a place, former name or coordinates

Before 1 July 2025: 63 province-level units as listed on 1 March 2025. 1831: names documented for 15 of 63 units.

Loading history…

1831: Hưng Yên

1831

10302026

Key moments

No historical boundary data for 1831; the map shows reference points only.

Each point is a reference centre computed from the matching current communes, not a boundary or seat of government.

Units in 1831 (63)