Beinwil (Freiamt) is a municipality in the district of Muri in the canton of Aargau in Switzerland.

The earliest evidence of human settlement are scattered Roman era items.

In 1586 these rights went to the family of Holder Meyer in Lucerne, who sold them in 1614 to Muri Abbey.

The Vogtei of Wiggwil was held by a Habsburg vassal, the Ministerialis (unfree knights) family of Gessler, until 1412.

The history of the parish is inextricably linked to the pilgrimage to the grave of St. Burkard of Beinwil, who died 18 May 1192(?

Beinwil (Freiamt) has an area, as of 2009[update], of 11.28 square kilometers (4.36 sq mi).

Of the rest of the land, 0.75 km2 (0.29 sq mi) or 6.6% is settled (buildings or roads), 0.02 km2 (4.9 acres) or 0.2% is either rivers or lakes.

[9] The age distribution, as of 2008[update], in Beinwil (Freiamt) is; 132 children or 12.8% of the population are between 0 and 9 years old and 144 teenagers or 14.0% are between 10 and 19.

[11] About 55.8% of the total households were owner occupied, or in other words did not pay rent (though they may have a mortgage or a rent-to-own agreement).

[9] The historical population is given in the following table:[3] The farm house at Winterschwil 8, the Catholic church of St. Burkard in the Unterdorf and Horban Castle are listed as Swiss heritage sites of national significance.

[15] The entire hamlets of Wiggwil and Winterschwil are designated as part of the Inventory of Swiss Heritage Sites.

[9] From the 2000 census[update], 774 or 82.2% were Roman Catholic, while 94 or 10.0% belonged to the Swiss Reformed Church.