These are the 213 municipalities of the canton of Aargau, Switzerland (as of January 2014).
As with most Swiss cantons there has been a trend since the early 2000s for municipalities to merge, though mergers in Aargau have so far been less radical than in other cantons.
The following mergers between the canton's municipalities have occurred since 2000:
2002: Mühlethal merged into Zofingen
2006: Oberehrendingen and Unterehrendingen combined to create Ehrendingen
2006: Stilli merged into Villigen
2010: Hilfikon merged into Villmergen
2010: Rohr merged into Aarau
2010: Etzgen, Hottwil, Mettau, Oberhofen and Wil combined to create Mettauertal
2010: Umiken merged into Brugg
2010: Sulz merged into Laufenburg
2010: Ittenthal merged into Kaisten
2012: Benzenschwil merged into Merenschwand
2013: Gallenkirch, Linn, Oberbözberg and Unterbözberg combined to create Bözberg
2014: Hermetschwil-Staffeln merged into Bremgarten
2014: Oberflachs and Schinznach-Dorf combined to create Schinznach
2014: Unterendingen merged into Endingen
2018: Scherz merged into Lupfig
planned: Berikon, Rudolfstetten-Friedlisberg and Widen
planned: Schinznach-Bad merged into Brugg
planned: Attelwil and Reitnau
1983: Arni-Islisberg split into two new municipalities — Arni and Islisberg
1984: Oberwil became Oberwil-Lieli
