Savigny-sur-Orge is a municipality in France. It is in the Essonne department in the Île-de-France region. It is in the Palaiseau district.
Savigny-sur-Orge is under the authority of the Essonne prefecture. This prefecture is in Évry. The prefecture helps manage the department for the State.
Territorial administration of France and prefectures
France has regions, departments, and districts. Each has its own prefect. These prefects help manage France for the State.
A department has a prefect. Departments are divided into districts. Each district has a sub-prefect. The sub-prefectures assist the prefect in their duties.

This helps the State manage its regions effectively. The prefectures and sub-prefectures are very important. They ensure that laws are followed throughout France.
Which prefecture does Savigny-sur-Orge depend on?
Savigny-sur-Orge is in the Essonne department, in the Île-de-France region. It is under the Essonne prefecture in Évry. This prefecture assists the local governors of the Essonne department.

In total, the Essonne department has 194 municipalities. They are in the districts of Palaiseau, Évry, and Étampes. Savigny-sur-Orge is in the Palaiseau district, along with 68 other municipalities.
| District | Number of municipalities |
|---|---|
| Palaiseau | 68 |
| Évry | 90 |
| Étampes | 36 |
Savigny-sur-Orge is therefore in the Palaiseau district. It is in the Essonne department. And it depends on the Essonne prefecture in Évry.
Sub-prefecture of the Palaiseau district
Essonne has three main areas: Palaiseau, Évry, and Étampes. A sub-prefect leads each one. They assist the prefect in representing the State in these areas. They enforce laws, maintain order, and help the municipalities.
Palaiseau has 68 municipalities over 484 km². In 2021, there were 637,912 people. It is a region that has grown significantly since 1960. In 1968, the population was smaller, only 346,023.
| Indicator | Value |
|---|---|
| Number of municipalities | 68 |
| Total area | 484 km² |
| Population density | 1,318 inhabitants/km² |
| Percentage of built urban areas | 32.6% |
| Percentage of non-built urban areas | 8.8% |
| Percentage of rural areas | 58.6% |
Municipalities of the Palaiseau district
The Palaiseau district is located in Île-de-France. It has municipalities of various sizes and populations. There are small villages as well as large cities like Massy. This showcases the diversity of the municipalities of Essonne.
These municipalities have different sizes and populations. Some are more densely populated than others. Each place has its own economic activities. There are technology companies, research institutions, and more.
There is much to see in this region. Historical and cultural sites attract tourists. If you enjoy history, culture, or learning about the local economy, Palaiseau will appeal to you. This region is rich in diversity and wealth.
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