Urdorf is a municipality in the district of Dietikon in the canton of Zürich in Switzerland, located in the Limmat Valley (German: Limmattal).

Of the rest of the land, 34.5% is settled (buildings or roads) and the remainder (0.7%) is non-productive (rivers, glaciers or mountains).

[4] In 1931 Niederurdorf and Oberurdorf were excluded from the Zürich District to form the municipality of Urdorf.

The railway stations of Urdorf and Urdorf-Weihermatt are stops of the Zürich S-Bahn on the lines S9 and S15.

Bus lines 302, 303, 308, 311, and 314 provide connections to neighbouring Dietikon, Schlieren, and Altstetten.

The Spitzacker Shopping Center has been renovated, now offering a significantly broadened range of quality for shoppers; construction of the residential will continue into 2015.