Swiss Reformed Church

The Swiss Reformed Church (German: Evangelisch-reformierte Kirchen der Schweiz, "Evangelical Reformed Churches of Switzerland") refers to the Reformed branch of Protestantism in Switzerland started in Zürich by Huldrych Zwingli and spread within a few years to Basel (Johannes Oecolampadius), Bern (Berchtold Haller and Niklaus Manuel), St. Gallen (Joachim Vadian), to cities in southern Germany and via Alsace (Martin Bucer) to France.

Since 1920, the Swiss Reformed Churches have been organized in 26 member churches of the Federation of Swiss Protestant Churches. According to a 2012 Swiss census, 26.9% of Swiss population were reported as registered members of a Reformed cantonal church.

The Swiss Reformed Churches, together, have approximately 2.4 million members.

The Reformation spread primarily in the cities of Switzerland, which was then composed of loosely connected cantons. Breakthrough began in the 1520s in Zurich under Zwingli, in Bern in 1528 under Berchtold Haller, in Basel in 1529 under John Oekolampad. After the early death of Zwingli in 1531, the Reformation continued. The French-speaking cities Neuchâtel, Geneva and Lausanne changed to the Reformation ten years later under William Farel and John Calvin coming from France. The Zwingli and Calvin branches had each their theological distinctions, but in 1549 under the lead of Bullinger and Calvin they came to a common agreement in the Consensus Tigurinus (Zürich Consent), and 1566 in the Second Helvetic Confession. The German Reformed ideological center was Zurich, the French speaking Reformed movement bastion was Geneva.

...
Wikipedia