| Official Name: | Kvicksund |
| Pushpin Map: | Sweden Västmanland#Sweden Södermanland#Sweden |
| Subdivision Type: | Country |
| Subdivision Name: | Sweden |
| Subdivision Type3: | Municipality |
| Subdivision Name3: | Västerås Municipality and Eskilstuna Municipality |
| Subdivision Type2: | County |
| Subdivision Name2: | Västmanland County and Södermanland County |
| Subdivision Type1: | Province |
| Subdivision Name1: | Västmanland and Södermanland |
| Area Footnotes: | [1] |
| Area Total Km2: | 3.11 |
| Population As Of: | 31 December 2010 |
| Population Total: | 1,768 |
| Population Density Km2: | 568 |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Coordinates: | 59.45°N 35°W |
Kvicksund (in Swedish pronounced as /kvɪkˈsɵnːd/)[2] is a bimunicipal locality situated in Västerås Municipality, Västmanland County and Eskilstuna Municipality, Södermanland County in Sweden with 1,768 inhabitants in 2010. It is located on the shores of Lake Mälaren. Kvicksund is mainly situated in two different areas, one on the southern shore and one on the northern. The northern part is confined to the island of Nyckelön while the southern part is on the mainland.
| Municipality | Population in Kvicksund | Other localities | Rural | Total | % of municipality population | |
|---|---|---|---|---|---|---|
| Västerås | 876 | 117,200 | 8,252 | 126,328 | 0.69 | |
| Eskilstuna | 690 | 76,009 | 11,709 | 88,408 | 0.78 | |
| Total | 1,566 | 193,209 | 19,961 | 214,736 | 0.73 |