Egolzwil is a municipality in the district of Willisau in the canton of Lucerne in Switzerland.

Of the rest of the land, 12.9% is settled (buildings or roads) and the remainder (1.2%) is non-productive (rivers, glaciers or mountains).

Of the settled areas, 6.95% is covered with buildings, 1.2% is industrial, 0.24% is classed as special developments, 0.24% is parks or greenbelts and 4.32% is transportation infrastructure.

The age distribution, as of 2008[update], in Egolzwil is; 331 people or 25.9% of the population is 0–19 years old.

In the 2000 census[update] the religious membership of Egolzwil was; 988 (80.6%) were Roman Catholic, and 95 (7.7%) were Protestant, with an additional 34 (2.77%) that were of some other Christian faith.

[10] The historical population is given in the following table:[3] The prehistoric lakeside settlement at Wauwilermoos is listed as a Swiss heritage site of national significance.

[11] The Egolzwil 3 settlement is part of the Prehistoric Pile dwellings around the Alps a UNESCO World Heritage Site.

The settlement was occupied for only about 6 years and had several rows of houses with bark covered floors.

A number of ceramic, stone, flint and antler tools were found, along with round bottom pots, flagons and beakers.