Evidence of earlier settlements near Schafisheim include urn graves of the Hallstatt period and a Roman era farm.

A farm owned by Murbach Abbey had the Twinggericht (low justice and property rights) over the village, which was held until 1482.

After passing through several other hands, the Twingherren power came in 1736 to the brothers Samuel and Etienne Brutel.

Economically, Schafisheim was dominated by agriculture and a little viticulture together with light, home manufacturing in the 19th century.

The opening of the A1 motorway in 1967 led to the establishment of logistics centers and furniture stores, and in 1973 the cantonal road traffic office.

Along the road between Aarau and Lenzburg the village expanded with new residential and commercial areas.

Of the rest of the land, 1.32 km2 (0.51 sq mi) or 20.9% is settled (buildings or roads), 0.03 km2 (7.4 acres) or 0.5% is either rivers or lakes.

The blazon of the municipal coat of arms is Gules a Ewe passant Argent.

[8] The age distribution, as of 2008[update], in Schafisheim is; 282 children or 10.5% of the population are between 0 and 9 years old and 381 teenagers or 14.2% are between 10 and 19.

[8] The historical population is given in the following table:[3] The Haus Urech (Urech House) at Seetalstrasse 27 and the Schlössli (small castle) at Lenzburgerstrasse 5, 7 are listed as Swiss heritage sites of national significance.

[8] From the 2000 census[update], 565 or 22.4% were Roman Catholic, while 1,426 or 56.6% belonged to the Swiss Reformed Church.