Mäntsälä
municipality in the region of Uusimaa in Finland
Mäntsälä (Finnish pronunciation: [ˈmæntsælæ]) is a municipality in the province of Southern Finland, and is part of the Uusimaa region. It has a population of 20,861
(31 December 2025) and covers an area of 596.11 square kilometres (230.16 sq mi) of
which 15.26 km2 (5.89 sq mi)
is water. The population density is
35.91 inhabitants per square kilometre (93.0/sq mi). 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 kilometres (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. Highway 4 (E75) connecting both cities passes through Mäntsälä.
Begin with the source’s own compact description: “Mäntsälä” is municipality in the region of Uusimaa in Finland. The dossier treats that line as a proposition to test through Mäntsälä, municipality and region, not as a finished interpretation.
Why this record matters
The phrase “municipality in the region of Uusimaa in Finland” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Apr 2, 2026. The linked authority identifier is Q986318. VIAF identifies the subject as 147732532. The Library of Congress control number is n79046575. Authority coordinates are 60.636, 25.319. 1 of 4 selected statements include explicit references; 3 carry qualifiers and 1 use preferred rank. The first chronological checks are 2025 and 2006.
Overview language is designed for orientation and should not be treated as a substitute for the evidence cited beneath it. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
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Three-step research path
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- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
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This entry incorporates text from “Mäntsälä” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.