| KSOU | |
| City: | Sioux Center, Iowa |
| Branding: | Sioux Ritmo |
| Frequency: | 1090 kHz |
| Translator: | 101.5 K268CZ (Sioux Center) |
| Airdate: | 1969 |
| Format: | Spanish Adult hits |
| Power: | 500 watts (day only) |
| Class: | D |
| Facility Id: | 67756 |
| Coordinates: | 43.0561°N -96.1714°W |
| Owner: | Community First Broadcasting. |
| Sister Stations: | KIHK, KSOU-FM |
| Website: | siouxcountyradio.com |
| Licensing Authority: | FCC |
KSOU (1090 AM) is a radio station broadcasting a Spanish adult hits format. Serving the Sioux Center area in the U.S. state of Iowa, the station is licensed to Community First Broadcasting.[1] KSOU previously carried a classic hits format and before that, a Christian Contemporary format.
1090 AM is a United States and Mexican clear-channel frequency; KSOU must leave the air from sunset to sunrise to prevent interference to the skywave signals of the Class A stations.
On February 5, 2020, KSOU changed their format from classic hits to Spanish adult hits, branded as "Sioux Ritmo".[2]