Leiderdorp
| Leiderdorp | |
|---|---|
| The Oude Rijn passing by Leiderdorp | |
| Location in South Holland | |
| Coordinates: 52°10′N 4°32′E / 52.167°N 4.533°E | |
| Country | Netherlands | 
| Province | South Holland | 
| Government | |
| • Body | Municipal council | 
| • Mayor | Tjarda Struik (as of 14 November 2023) | 
| Area | |
|  • Total | 12.28 km2 (4.74 sq mi) | 
| • Land | 11.58 km2 (4.47 sq mi) | 
| • Water | 0.70 km2 (0.27 sq mi) | 
| Elevation | 0 m (0 ft) | 
| Population  (January 2021) | |
|  • Total | 27,377 | 
| • Density | 2,364/km2 (6,120/sq mi) | 
| Demonym | Leiderdorper | 
| Time zone | UTC+1 (CET) | 
| • Summer (DST) | UTC+2 (CEST) | 
| Postcode | 2350–2353 | 
| Area code | 071 | 
| Website | www | 
Leiderdorp (Dutch pronunciation: [ˌlɛidərˈdɔr(ə)p] ⓘ) is a town and municipality in the western Netherlands, in the province of South Holland near the city of Leiden. It had a population of 27,377 in 2021.
The municipality covers an area of 12.28 km2 (4.74 sq mi) of which 0.70 km2 (0.27 sq mi) is water. Leiderdorp has now become a suburb of the city of Leiden, although the Oude Rijn (Old Rhine) river and the Zijl river separate the two. The HSL-Zuid high-speed rail line between Amsterdam and Brussels crosses Leiderdorp in a tunnel.
It is one of the oldest towns in South Holland province and was a base for the Spanish army in the Eighty Years' War.