The village was first mentioned in a document dated 4 September 1186, in which Pope Urban III confirmed, among other things, that it was owned by the Augsburg bishop Udalschalk.

At the beginning of the 14th century Offingen became part of the margraviate of Burgau together with the neighbouring castle Landstrost by an area exchange.

In 1518 Eustachius von Westernach sold his fief and pledged property to the lords of the Stain zu Rechtenstein at Reisensburg.

Around 1550, they found themselves in an economic emergency and sold the Offingen estate to the lords of Schellenberg zu Hüfingen in 1599.

However, they also became indebted with the property and transferred the fiefdoms back to the barons of Freyberg-Eisenberg in Haldenwang in 1659, who held the local sovereignty until the redemption of the feudal rights in the 19th century.

The trigger was the Rheinbundakte, an alliance of southern German states with France's Emperor Napoléon Bonaparte.

This agreement determined, among other things, that the noble principalities as well as the knightly possessions, which up to then had been directly linked to the empire, were subordinated to the respective sovereign (mediatisation).

After the farmer Johann Haupeltshofer became the new lord of the castle in 1862, the community and the church foundation acquired the property in 1878 and used it as a school and parsonage.

In neighbouring Schnuttenbach, today a district of Offingen, around 75 Hungarian-Germans and around 250 displaced persons from the Sudetenland were accommodated in a barracks camp.

The attached Church of St. Ursula has artistically remarkable stained glass windows by Munich professor Josef Oberberger.

The Augsburg entrepreneurs Johannes and Wilhelm Lembert as well as Franz Baptist Silbermann built the felt factory in 1896.

On July 14, 1971, the Bavarian State Government awarded the town the official designation Markt (market).

The express mail wagon connection from Dillingen an der Donau to Günzburg was shortly thereafter routed via Lauingen and Gundremmingen to Offinger Bahnhof.