A municipium was a Roman town that ran its own affairs under a charter while owing duties to Rome. It was usually an existing community brought into the Roman state, unlike a colonia, which was settled from Rome.
Key takeaways
- A municipium governed itself through elected officials and a council, but owed duties to Rome set out in a charter [1].
- Emperors could promote a town to municipium as a reward, as Claudius did for Volubilis in Mauretania [1].
- A municipium was different from a colonia and from a civitas, though the three words are often muddled.
- Our map shows 9,348 Roman places but does not mark which ones were municipia.
How a municipium worked
A municipium was a town or city in the Roman world that governed itself while owing certain duties to Rome. The word comes from the idea of a social contract among municipes, citizens who owed communal duties in exchange for citizenship privileges [1].
The first municipia appeared when Italian city-states were brought under Roman control without being fully absorbed. Their local government stayed in place, but they added duties owed to Rome, and a charter set out the rights and responsibilities of the citizens. Tusculum was the first [1].
Self-government was what defined a municipium. Executive power sat with four officials chosen each year: two duumviri and two aediles. An appointed council of decurions, similar to the Senate in Rome, advised them [1]. In later years these positions became hereditary [1]. Inside the town, then, people ran their own courts, markets and festivals, much as Rome did on a larger scale.
Rights varied. In the first order, inhabitants had full Roman citizenship, including the right to vote. In the second order, residents of tribal centres under Roman control were not full citizens and could not vote, but still owed taxes and military service, though their magistrates could become citizens after retirement [1]. Over the early empire these differences faded, until eventually all citizens were Roman and "municipium" meant simply a municipality, the lowest level of local government [1].
An example from our data
Volubilis, in the province of Mauretania, was promoted to municipium by Claudius as a reward for its help in a revolt in AD 40 to 41 [1]. That was an upgrade for a town that already existed, which is typical of the type. Mauretania covers 292,356 km² on our map and was annexed in AD 42. Its modern country is Morocco, which has 39 Roman places on the cities layer.
In Spain, Vespasian granted "Latin rights" to the Hispanic provinces in AD 73 or 74 [1]. The nearest match on our map is Hispania Tarraconensis, whose outline covers 389,610 km². The map does not show these rights or any town's rank. It shows where the places were, and you can open the cities layer at AD 117 to see them across the whole empire.
The thing people get wrong
A frequent mistake is to treat municipium, colonia and civitas as three words for "a Roman town". They were different legal categories. A colonia was settled from Rome, a municipium was an existing town that kept its own government under Roman rules, and a civitas in the provinces was usually a native community and its capital town [1]. A town could also change category as emperors promoted it.
Municipium vs colonia
| Municipium | Colonia | |
|---|---|---|
| Usual origin | Existing community brought under Rome | Settlement of citizens, often veterans |
| Local government | Kept its own, under a charter | Modelled on Rome's |
| Rank | Lower | Highest |
Frequently asked questions
What does municipium mean?
It was a town or city in the Roman world that governed itself. The word is the root of our word municipality.
How is a municipium different from a colonia?
A colonia was a settlement of Roman citizens planted from Rome. A municipium was usually an existing community that was brought under Rome and kept its local government.
Did people in a municipium have to be Roman citizens?
It depended on the town and the period. Some inhabitants had full citizenship and some had lesser rights, and the differences faded over time.
Sources
- Municipium, Wikipedia.
- Every figure from our own map is worked out from the datasets on the data sources page (checked against Ancient World Mapping Center outlines and Pleiades).