As per 2014 its pastorally served 232,132 Catholics (5.3% of 4,359,762 total) on 46,378 km² in 149 parishes, 420 priests (297 diocesan, 123 religious) with 704 lay religious (282 brothers, 422 sisters) and 125 seminarians.
The diocese covers the Romanian region of Moldavia-the counties of Suceava, Botoşani, Neamţ, Iaşi, Bacău, Vaslui, Vrancea and Galaţi.