Mäntsälä, Uusimaa, Finland

🇫🇮 Mäntsälä is a municipality in the province of Southern Finland, and is part of the Uusimaa region. It covers an area of 596.11 square km (230.16 sq mi) of which 15.26 km² (5.89 sq mi) is water. The municipality is unilingually Finnish. Mäntsälä is one of three municipalities in the Uusimaa region that do not have a Swedish name; the others are Nurmijärvi and Askola.

Mäntsälä lies about 60 km (40 mi) north of Helsinki, the capital of Finland. During the last few years, the population of Mäntsälä has been one of the most rapidly increasing in Finland. A new railway, the Kerava–Lahti railway line, was built between Kerava and Lahti with passenger traffic starting on 4 September 2006 from Mäntsälä railway station. Helsinki is about 40 minutes away, and Lahti even closer.

The coat of arms of Mäntsälä has its theme in the region's traditional livelihoods; the head of the moose refers to the hunting lands of the region, and the clovers symbolizes local agriculture. The coat of arms was designed by Olof Eriksson and approved by the Mäntsälä Municipal Council on 16 December 1950. The coat of arms was officially approved by the Ministry of the Interior on 20 February 1951.

In 1992 an apartment trade fair was held in Mäntsälä. The area is being expanded and since 2006, a train depot lies next to it.

A discount chain Tokmanni's head office, logistics centre and warehouse, founded in 1989, are in Mäntsälä. Also, Yandex built one of its data centres in Mäntsälä in 2015, with a second data centre expected to be built in 2020 by Lehto.