Britannia: Roman province map

A Roman province that fell in the Western half after the split of AD 395.

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AD 117about 4,880,924 km²The empire at its greatest extent, after Trajan's eastern conquests; Trajan dies and Hadrian succeeds. Ruler: Trajan, then Hadrian.

Modern country bordersProvincesRoman citiesRoman roads

Key

Territory

Roman Empire Territory at the chosen date
Eastern empire From AD 395, the part later called Byzantine
Western empire AD 395 and, as reconquests, AD 565

Layers

Province border Where provinces are shown, AD 200 outlines
Roman city Pleiades places attested in the period
Main Roman road Itiner-e, about AD 150 (not tied to the date)
Modern country border Today’s borders, for comparison

Borders are approximate and debated. Frontier zones were not hard lines, and client kingdoms are not counted unless the source map includes them. Outlines for 133 BC, 44 BC, AD 14 and the later dates are rebuilt from the province outlines of AD 200, so early frontiers look more settled than they were. 264 BC and the Byzantine dates follow modern regional boundaries and are coarser still. 753 BC is a symbolic dot on Rome.

Britannia at a glance

Londiniumcapital
AD 43first Roman
AD 410no longer Roman
170,292 km²area on the AD 200 map

Britannia was Roman from AD 43 to AD 410, with its capital at Londinium. On the AD 200 map it covers about 170,292 km², spread across the United Kingdom (98%) and Isle of Man (0.3%) today. It is inside the empire on the map at AD 117, AD 211 and AD 395.

Dates: Wikipedia: Roman Britain (conquest begins AD 43; Honorius tells Britain to defend itself, 410). The outline is the Ancient World Mapping Center province map of AD 200, so earlier and later shapes of the province may have differed.

Which modern countries does Britannia cover?

Country	Share of the province	Area (km²)
Roman Britain	98%	167,212
Isle of Man	0.3%	533

Britannia on the key dates

All provinces · All key dates