Ulster Township is one of twelve townships in Floyd County, Iowa, USA. As of the 2000 census, its population was 373.

According to the United States Census Bureau, Ulster Township covers an area of 41.51 square miles (107.51 square kilometers).

• Carney at 43°01′45″N 92°48′38″W / 43.029138°N 92.810471°W / 43.029138; -92.810471
• Roseville at 43°00′33″N 92°48′36″W / 43.009138°N 92.809915°W / 43.009138; -92.809915

(This list is based on USGS data and may include former settlements.)

• Rudd Township (north)
• Floyd Township (northeast)
• Saint Charles Township (east)
• Union Township (south)
• Scott Township (southwest)
• Rockford Township (west)

Ulster Township contains Ulsterville Cemetery

• Iowa Highway 14
• Iowa Highway 147

• Charles City Community School District
• Rudd-Rockford-Marble Rock Community School District

• Iowa's 4th congressional district
• State House District 14
• State Senate District 7

• United States Census Bureau 2008 TIGER/Line Shapefiles
• United States Board on Geographic Names (GNIS)
• United States National Atlas

• US-Counties.com
• City-Data.com