|• Mayor||Slavcho Hadzhiev (CEDB)|
|• Total||25.543 km2 (9.862 sq mi)|
|Elevation||1,199 m (3,934 ft)|
|Time zone||EET (UTC+2)|
|• Summer (DST)||EEST (UTC+3)|
The village was founded some time in the beginning of the 15th century when shepherds from the village of Kochan moved to the place where they had their dairies to avoid getting infected with plague. At a later time the village saw more refugees from the area around Serres but it is not known when and under what circumstances it happened.
As of 1873 Osina (Oussina) had male population of 150 Pomaks and 50 houses. According to Vasil Kanchov, as of 1900, Osina (Усина) was populated by 250 Bulgarian Muslims According to Stephan Verkovic at the end of the 19th century the village had male population of 173 Pomaks and 50 houses.
Cultural and natural landmarks
- Remains of a settlement from the Stone-Copper Age northwest from the village;
- Remains of a medieval settlement northeast from the village;
- Remains of a medieval settlement northwest from the village;
- Remains of a church west from the village;
- Remains of an old road near the village.
- Говедаров, Сабри (11 октомври 1969). "Осина - преди и сега". Родопи (in Bulgarian) (118). ISSN 0861-1327.
- Македония и Одринско. Статистика на населението от 1873 г. (in Bulgarian, French, English, Russian) (II ed.). София: Македонски научен институт. 1995 . pp. 132–133.
- Кънчов, Васил (1996) . "Неврокопска Каза". Македония. Етнография и статистика (in Bulgarian) (II ed.). София: Проф. М. Дринов. p. 196.
- Райчевски, Стоян (2004) . Българите мохамедани (in Bulgarian) (II ed.). София: Национален музей на българската книга и полиграфия. p. 111. ISBN 954-9308-51-0.
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