Crediton is a town and civil parish in the Mid Devon district of Devon, England. It stands on the A377 Exeter to Barnstaple road at the juncti…Crediton is a town and civil parish in the Mid Devon district of Devon, England. It stands on the A377 Exeter to Barnstaple road at the junction with the A3072 road to Tiverton, 7 miles north west of Exeter and 14 miles from the M5 motorway. It has a population of 21,990.