| Jalasjärvi | |
| Official Name: | Finnish: Jalasjärven kunta Swedish: Jalasjärvi kommun |
| Settlement Type: | Former municipality |
| Mapsize: | 150px |
| Pushpin Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Name: | Finland |
| Subdivision Type1: | Region |
| Subdivision Name1: | Southern Ostrobothnia |
| Subdivision Type2: | Sub-region |
| Subdivision Name2: | Seinäjoki sub-region |
| Leader Title: | Municipal manager |
| Leader Name: | Juha Luukko |
| Established Title: | Charter |
| Established Date: | 1867 |
| Established Title2: | Consolidated |
| Established Date2: | 2016 |
| Area Footnotes: | [1] |
| Area Total Km2: | 830.39 |
| Area Land Km2: | 818.70 |
| Area Water Km2: | 11.69 |
| Population As Of: | 2015-06-30 |
| Population Footnotes: | [2] |
| Population Total: | 7834 |
| Population Density Km2: | auto |
| Demographics1 Info1: | % (official) |
| Demographics1 Info2: | % |
| Demographics1 Info3: | % |
| Demographics1 Info4: | % |
| Demographics2 Title1: | 0 to 14 |
| Demographics2 Info1: | % |
| Demographics2 Title2: | 15 to 64 |
| Demographics2 Info2: | % |
| Demographics2 Title3: | 65 or older |
| Demographics2 Info3: | % |
| Timezone: | EET |
| Utc Offset: | +2 |
| Timezone Dst: | EEST |
| Utc Offset Dst: | +3 |
| Coordinates: | 62.4917°N 68°W |
| Postal Code Type: | Postal code |
| Website: | www.jalasjarvi.fi |
Jalasjärvi is a former municipality of Finland. It was merged to the town of Kurikka on 1 January 2016.
It is located in the province of Western Finland and is part of the Southern Ostrobothnia region. The population of Jalasjärvi was (30 June 2015) and covered a land area of 818.7km2. The population density was .
The municipality was unilingually Finnish.
Alavalli, Hirvijärvi, Ilvesjoki, Jalasjärvi, Jokipii, Keskikylä, Koskue, Luopajärvi, Sikakylä, Taivalmaa and Ylivalli.