Warta is a town in Sieradz County, Łódź Voivodeship, Poland, with 3,208 inhabitants. It is situated on the Warta River. It is located in the Siera…Warta is a town in Sieradz County, Łódź Voivodeship, Poland, with 3,208 inhabitants. It is situated on the Warta River. It is located in the Sieradz Land.