ILFELD, a town in the Prussian province of Saxony, at the south foot of the Harz, at the entrance to the Bahrethal, 8 m. N. from Nordhausen by the rail to Wernigerode. Pop. 2,021. Ilfeld, as a town, dates from the i4th century, when it sprang up round a Benedictine monastery. It manufactures parquet flooring, paper and plaster of Paris, and has coal mines.