Oberbüren is a municipality in the Wahlkreis (constituency) of Wil in the canton of St. Gallen in Switzerland.

Of the rest of the land, 12% is settled (buildings or roads) and the remainder (1.9%) is non-productive (rivers or lakes).

The blazon of the municipal coat of arms is Argent Stag Skull and Antlers Gules.

Of the foreign population, (as of 2000[update]), 17 are from Germany, 34 are from Italy, 283 are from ex-Yugoslavia, 18 are from Austria, 19 are from Turkey, and 122 are from another country.

[8] The age distribution, as of 2000[update], in Oberbüren is; 603 children or 15.3% of the population are between 0 and 9 years old and 593 teenagers or 15.0% are between 10 and 19.

[4] Out of the total population in Oberbüren, as of 2000[update], the highest education level completed by 756 people (19.2% of the population) was Primary, while 1,564 (39.6%) have completed their secondary education, 330 (8.4%) have attended a Tertiary school, and 125 (3.2%) are not in school.

[11] From the 2000 census[update], 2,337 or 59.2% are Roman Catholic, while 831 or 21.1% belonged to the Swiss Reformed Church.