Castle Hill is a suburb of the town of Ipswich, partly in the ward of Castle Hill, in the Ipswich district, in the county of Suffolk, England. It is the site of the Castle Hill Roman villa. This area has for centuries been called Castle Hill but there never was a castle. Castlehill Farm stood just yards away prior to the housing scheme.
Castle Hill has a primary and secondary school, a post office, a pub, two churches and an arcade of shops on both Fircroft Road and Garrick Way.
Castle Hill United Reformed Church was completed in 1956.