[3] A variety of Roman era objects and fragments of buildings or small settlement have been found in Roggwil.

It was owned by the Barons of Bechburg and was directly ruled by a branch of this family that took their name from the village.

Through donations and purchase the Abbey grew to become the primary landlord and ruler over the village by 1250.

In 1406 the city of Bern bought the County of Burgundy, which included Roggwil, from the Kyburgs.

In 1413 Bern was able to gain control of the courts of the Roggwil and sharply restricted the Abbey's power.

Initially the village shared a low court with Wynau and was part of the Amt of Wangen.

After the 1798 French invasion, Roggwil attempted to join the Canton of Aarau under the Helvetic Republic, but it was assigned to the Bernese district of Langenthal.

A secondary school opened in 1962, a town hall in 1965, a retirement home in 1985 and in 1987 a small municipal power plant.

[5] It consists of the village of Roggwil, the hamlet of Kalteherberge and scattered farm houses.

[6] The blazon of the municipal coat of arms is Gules a wreath of Linden branches Vert frettee with three Rye Ears Or.

[10] Most of the population (as of 2000[update]) speaks German (3,317 or 92.1%) as their first language, Italian is the second most common (72 or 2.0%) and Albanian is the third (46 or 1.3%).

The historical population is given in the following chart:[3][13] In the 2011 federal election the most popular party was the SVP which received 29.9% of the vote.

The number of jobs in the primary sector was 27, of which 22 were in agriculture and 5 were in forestry or lumber production.

In the tertiary sector; 89 or 19.4% were in wholesale or retail sales or the repair of motor vehicles, 86 or 18.8% were in the movement and storage of goods, 60 or 13.1% were in a hotel or restaurant, 3 or 0.7% were in the information industry, 8 or 1.7% were the insurance or financial industry, 12 or 2.6% were technical professionals or scientists, 40 or 8.7% were in education and 90 or 19.7% were in health care.

[10] From the 2000 census[update], 597 or 16.6% were Roman Catholic, while 2,289 or 63.6% belonged to the Swiss Reformed Church.

This is followed by three years of obligatory lower Secondary school where the students are separated according to ability and aptitude.

Following the lower Secondary students may attend additional schooling or they may enter an apprenticeship.

The primary station is Roggwil-Wynau, on the Olten–Bern railway line, with regular service to Langenthal and Baden.