| Flag Size: | 120x80px | ||
| Seal Size: | 100x80px | ||
| Image Map1: |
| ||
| Pushpin Map: | Philippines | ||
| Pushpin Label Position: | left | ||
| Pushpin Map Caption: | Location within the | ||
| Subdivision Type: | Country | ||
| Subdivision Name: | Philippines | ||
| Subdivision Type1: | Region | ||
| Subdivision Type2: | Province | ||
| Subdivision Type3: | District | ||
| Established Title: | Founded | ||
| Established Date: | December 28, 1956 | ||
| Parts Type: | Barangays | ||
| Parts Style: | para | ||
| P1: | (see Barangays) | ||
| Leader Name: | Jarvis M. Acosta | ||
| Leader Title1: | Vice Mayor | ||
| Leader Name1: | Julius M. Acosta Jr. | ||
| Leader Name2: | Antonieta R. Eudela | ||
| Leader Title3: | Municipal Council | ||
| Leader Title4: | Electorate | ||
| Leader Name4: | voters (electorate_point_in_time}}|) | ||
| Elevation Max M: | 222 | ||
| Elevation Min M: | -3 | ||
| Population Density Km2: | auto | ||
| Population Blank1 Title: | Households | ||
| Timezone: | PST | ||
| Utc Offset: | +8 | ||
| Postal Code Type: | ZIP code | ||
| Demographics Type1: | Economy | ||
| Demographics1 Title2: | Poverty incidence | ||
| Demographics1 Info2: | % | ||
| Demographics1 Title3: | Revenue | ||
| Demographics1 Title4: | Revenue rank | ||
| Demographics1 Title5: | Assets | ||
| Demographics1 Title6: | Assets rank | ||
| Demographics1 Title7: | IRA | ||
| Demographics1 Title8: | IRA rank | ||
| Demographics1 Title9: | Expenditure | ||
| Demographics1 Title10: | Liabilities | ||
| Demographics Type2: | Service provider | ||
| Demographics2 Title1: | Electricity | ||
| Demographics2 Title2: | Water | ||
| Demographics2 Title3: | Telecommunications | ||
| Demographics2 Title4: | Cable TV | ||
| Blank1 Name Sec1: | Native languages | ||
| Blank2 Name Sec1: | Crime index | ||
| Blank1 Name Sec2: | Major religions | ||
| Blank2 Name Sec2: | Feast date | ||
| Blank3 Name Sec2: | Catholic diocese | ||
| Blank4 Name Sec2: | Patron saint | ||
Siay, officially the Municipality of Siay (Cebuano: Lungsod sa Siay; Chavacano: Municipalidad de Siay; Tagalog: Bayan ng Siay), is a 2nd class municipality in the province of Zamboanga Sibugay, Philippines. According to the 2020 census, it has a population of 40,585 people.
The municipality is located in the 2nd District and the eastern part of the province of Zamboanga Sibugay. It is 38 kilometers from Ipil, 220 kilometers to Dipolog, and 180 kilometers east to Zamboanga City. It is geographically situated within a map coordination of 741 east & 122* 53*west.
Siay is bounded from the north by the municipality of Diplahan, south by the Sibuguey Bay, west by the municipality of Kabasalan, and east by the municipality of Imelda.
The municipality was created through Executive Order No. 223, signed by President Ramon Magsaysay on December 28, 1956, consisting twenty-six barrios and sitios of Kabasalan, including Barrio Siay which was designated as the seat of government, and another six in Malangas, all then located in Zamboanga del Sur.[1]
Siay had its territory reduced in November 1977 with the detachment of twenty-two barangays; thirteen were organized into the new municipality of Payao,[2] while another nine, along with parts of Malangas and Alicia, were constituted into Imelda.[3]
Siay is politically subdivided into 29 barangays. Each barangay consists of puroks while some have sitios.