Isojoki

{{expand Finnish|date=June 2023|topic=geo}}

{{Use dmy dates|date=May 2024}}

{{Infobox settlement

|name = Isojoki

| official_name = {{lang|fi|Isojoen kunta}}
{{lang|sv|Storå kommun}}

| other_name = Storå

| settlement_type = Municipality

| image_skyline = Isojoen kirkko ja kellotapuli.jpg

| image_caption = Isojoki church and bell tower

| image_shield = Isojoki.vaakuna.svg

| shield_size = 120x80px

| image_map = Isojoki sijainti Suomi.svg

| map_caption = Location of Isojoki in Finland

|coordinates = {{coord|62|06|50|N|21|57|30|E|display=inline,title}}

|subdivision_type = Country

|subdivision_name = {{flag|Finland}}

| subdivision_type1 = Region

| subdivision_name1 = South Ostrobothnia

| subdivision_type2 = Sub-region

| subdivision_name2 = Suupohja

| leader_title = Municipal manager

| leader_name = Juha Herrala

| established_title = Charter

| established_date = 1855

|area_footnotes = {{Data Finland municipality|area_footnotes|Isojoki}}

|area_total_km2 = {{Data Finland municipality|area_total_km2|Isojoki}}

|area_land_km2 = {{Data Finland municipality|area_land_km2|Isojoki}}

|area_water_km2 = {{Data Finland municipality|area_water_km2|Isojoki}}

|area_rank = {{Data Finland municipality|area_rank|Isojoki}}

|population_as_of = {{Data Finland municipality|population_as_of|Isojoki}}

|population_footnotes = {{Data Finland municipality|population_footnotes|Isojoki}}

|population_total = {{Data Finland municipality|population_total|Isojoki}}

|population_density_km2 = {{Data Finland municipality|population_density_km2|Isojoki}}

|population_rank = {{Data Finland municipality|population_rank|Isojoki}}

|demographics_type1 = {{Data Finland municipality|demographics_type1|Isojoki}}

|demographics1_footnotes = {{Data Finland municipality|population_footnotes|Isojoki}}

|demographics1_title1 = {{Data Finland municipality|demographics1_title1|Isojoki}}

|demographics1_info1 = {{Data Finland municipality|demographics1_info1|Isojoki}}

|demographics1_title2 = {{Data Finland municipality|demographics1_title2|Isojoki}}

|demographics1_info2 = {{Data Finland municipality|demographics1_info2|Isojoki}}

|demographics1_title3 = {{Data Finland municipality|demographics1_title3|Isojoki}}

|demographics1_info3 = {{Data Finland municipality|demographics1_info3|Isojoki}}

|demographics1_title4 = {{Data Finland municipality|demographics1_title4|Isojoki}}

|demographics1_info4 = {{Data Finland municipality|demographics1_info4|Isojoki}}

|demographics_type2 = {{Data Finland municipality|demographics_type2|Isojoki}}

|demographics2_footnotes = {{Data Finland municipality|demographics2_footnotes|Isojoki}}

|demographics2_title1 = {{Data Finland municipality|demographics2_title1|Isojoki}}

|demographics2_info1 = {{Data Finland municipality|demographics2_info1|Isojoki}}

|demographics2_title2 = {{Data Finland municipality|demographics2_title2|Isojoki}}

|demographics2_info2 = {{Data Finland municipality|demographics2_info2|Isojoki}}

|demographics2_title3 = {{Data Finland municipality|demographics2_title3|Isojoki}}

|demographics2_info3 = {{Data Finland municipality|demographics2_info3|Isojoki}}

|blank_name = {{Data Finland municipality|blank_name|Isojoki}}

|blank_info = {{Data Finland municipality|blank_info|Isojoki}}

|timezone = EET

|utc_offset = +02:00

|timezone_DST = EEST

|utc_offset_DST = +03:00

| website = [http://www.isojoki.fi/ www.isojoki.fi]

}}

Isojoki ({{langx|sv|Storå}}; lit. "Big River") is a municipality of Finland. It is part of the South Ostrobothnia region. The city of Pori is located {{convert|83|km}} south of Isojoki. Neighbouring municipalities are Honkajoki, Karijoki, Kauhajoki, Kristinestad, Merikarvia and Siikainen. The population of Isojoki is {{formatnum: {{Data Finland municipality/population count|Isojoki}}}} ({{#time: j F Y|{{Data Finland municipality/population count|sourcedate}} }}). The municipality covers an area of {{convert|{{Data Finland municipality/land area|Isojoki}}|km2|abbr=on}}, of which {{convert|{{Data Finland municipality/inland waters area|Isojoki}}|km2|abbr=on}} is inland water ({{#time: j F Y|{{Data Finland municipality/total area|sourcedate}} }}). The population density is {{convert|{{Data Finland municipality/population density|Isojoki|round=2}}|PD/km2|abbr=on}}. The municipality is unilingually Finnish.

Although the area is not very high, one of the highest hills of southern Finland is located here (Lauhanvuori). Many Finns from this area have emigrated to Minnesota, in the USA, as well as Michigan.{{citation needed|date=May 2024}}

Industry: wood, potato, machinery

Tourism: Lauhanvuori National Park (hotel, viewtower, big smoke sauna, historical nature with many relics from ice-age)

Nature: Mostly Forest, swamp and agriculture