Unterentfelden
| Unterentfelden | |
|---|---|
| Unterentfelden Town Hall | |
| Location of Unterentfelden | |
| Coordinates: 47°22′N 8°2′E / 47.367°N 8.033°E | |
| Country | Switzerland | 
| Canton | Aargau | 
| District | Aarau | 
| Area | |
|  • Total | 2.87 km2 (1.11 sq mi) | 
| Elevation | 417 m (1,368 ft) | 
| Population  (31 December 2018) | |
|  • Total | 4,155 | 
| • Density | 1,400/km2 (3,700/sq mi) | 
| Time zone | UTC+01:00 (Central European Time) | 
| • Summer (DST) | UTC+02:00 (Central European Summer Time) | 
| Postal code(s) | 5035 | 
| SFOS number | 4013 | 
| ISO 3166 code | CH-AG | 
| Surrounded by | Aarau, Eppenberg-Wöschnau (SO), Oberentfelden, Schönenwerd (SO), Suhr | 
| Website | www SFSO statistics | 
Unterentfelden is a municipality in the district of Aarau of the Canton of Aargau in Switzerland.