Deep River is a city in Poweshiek County, Iowa, United States. It is along with the make known of the township which includes the city. The city population was 249 at the become old of the 2020 census.

Deep River is located at 41°34′49″N 92°22′27″W / 41.58028°N 92.37417°W / 41.58028; -92.37417 (41.580395, -92.374249).
According to the United States Census Bureau, the city has a total Place of 0.43 square miles (1.11 km²), all land.

In 1856 the town of Dresden, approximately one mile east of the gift town of Deep River, was platted. The Whitney brothers operated a addition there for nearly 20 years. When the Chicago and Northwestern Railroad was built, the residents of Dresden moved to be near the railroad, and in view of that the town of Deep River was normal in 1884. The Dresden Cemetery lies just about a mile and a half south of the current county road, locally known as the Diamond Trail, just nearly a quarter mile east of Iowa Highway 21. The town of Tilton was acknowledged at the southern link up of the township in 1884 as well, although this largely lay in Keokuk County.

Deep River Township was organized March 7, 1857. It was, at first, a part of Jackson Township. It derived its make known from the stream flowing through its northern part, but not because the water was as a result deep, but rather it was fittingly far the length of to the water. The first settlers to sentient in Deep River Township were Robert Taylor and family from Ohio; John Sargood, whose daddy was from England; Albert Morgan and intimates from Ohio; and the Lights, who came from Virginia in 1849. The first say office was acknowledged in 1852, and called Deep River. The first marriage was that of Nancy Taylor to Rev. W. H. Palmer in 1849. James Light and James Rundle established in that same year.