Schlossrued is a municipality in the district of Kulm in the canton of Aargau in Switzerland.

Of the rest of the land, 0.57 square kilometers (0.22 sq mi) or 7.9% is settled (buildings or roads), 0.02 km2 (4.9 acres) or 0.3% is either rivers or lakes.

28.0% of the total land area is heavily forested and 3.3% is covered with orchards or small clusters of trees.

[3] The blazon of the municipal coat of arms is Azure a Tower embattled Argent roofed Gules issuant from Coupeaux Vert and in chief two Oars of the second in Saltire and between them in chief a Mullet of the same[4] Schlossrued has a population (as of December 2020[update]) of 822[5] As of June 2009[update], 6.9% of the population are foreign nationals.

[7] The age distribution, as of 2008[update], in Schlossrued is; 77 children or 8.8% of the population are between 0 and 9 years old and 136 teenagers or 15.6% are between 10 and 19.

[9] The historical population is given in the following table:[8] As of  2007[update], Schlossrued had an unemployment rate of 1.59%.

[7] From the 2000 census[update], 123 or 13.6% were Roman Catholic, while 661 or 73.2% belonged to the Swiss Reformed Church.