Egliswil is a municipality and village in the district of Lenzburg in the canton of Aargau in Switzerland.

[3] Egliswil is located in the Lenzburg district, in a depression on the right edge of the lower Seetal valley.

The larger village of Seon is 2 km distant (measured from centre-to-centre) — the small Aabach river forms part of the boundary between the municipalities.

The centre of the village features the Gemeindehaus (the headquarters of the municipality), a primary school and a church.

[4] The blazon of the municipal coat of arms is Azure three fishes fretted Argent between as many Mullets of Five two and one of the same.

[5] The coat of arms, which was first used in 1811 in the municipal seal, is due to a misinterpretation of the place name.

The Alemanni Egirichswilare refers to the farm estate of Egirich (the "Fear and Loathing Kingdoms"), so has nothing to do with perch (Swiss German: Egli).

[9] The age distribution, as of 2008[update], in Egliswil is; 133 children or 10.2% of the population are between 0 and 9 years old and 177 teenagers or 13.5% are between 10 and 19.

[11] About 63.2% 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] From the 2000 census[update], 214 or 17.7% were Roman Catholic, while 823 or 68.0% belonged to the Swiss Reformed Church.

[13] Egliswil is home to a primary school and a public library; the library has (as of 2008[update]) 5,103 books or other media, and loaned out 14,391 items in that year, in which it was open a total of 120 days with average of 6 hours per week.