From Walgrave, Northamptonshire to all cities in Oxfordshire starting with letter C
- Caldecott, Northamptonshire
- Calthorpe, Northamptonshire
- Camp Corner, Northamptonshire
- Campsfield, Northamptonshire
- Cane End, Northamptonshire
- Carswell Marsh, Northamptonshire
- Carterton, Northamptonshire
- Cassington, Northamptonshire
- Catslip, Northamptonshire
- Caulcott, Northamptonshire
- Caversfield, Northamptonshire
- Chadlington, Northamptonshire
- Chalgrove, Northamptonshire
- Chalkhouse Green, Northamptonshire
- Charlbury, Northamptonshire
- Charlton, Northamptonshire
- Charlton on Otmoor, Northamptonshire
- Charney Bassett, Northamptonshire
- Charterville Allotments, Northamptonshire
- Chastleton, Northamptonshire
- Chawley, Northamptonshire
- Chazey Heath, Northamptonshire
- Checkendon, Northamptonshire
- Chesterton, Northamptonshire
- Childrey, Northamptonshire
- Chilson, Northamptonshire
- Chilton, Northamptonshire
- Chimney, Northamptonshire
- Chimney end, Northamptonshire
- Chinnor, Northamptonshire
- Chipping Norton, Northamptonshire
- Chiselhampton, Northamptonshire
- Cholsey, Northamptonshire
- Christmas Common, Northamptonshire
- Church End, Northamptonshire
- Church Enstone, Northamptonshire
- Church Hanborough, Northamptonshire
- Churchill, Northamptonshire
- Clanfield, Northamptonshire
- Clare, Northamptonshire
- Clattercote, Northamptonshire
- Claydon, Northamptonshire
- Cleeve, Northamptonshire
- Cleveley, Northamptonshire
- Clifton, Northamptonshire
- Clifton Hampden, Northamptonshire
- Cogges, Northamptonshire
- Cold Harbour, Northamptonshire
- Coleshill, Northamptonshire
- Collins End, Northamptonshire
- Combe, Northamptonshire
- Compton Beauchamp, Northamptonshire
- Cookley Green, Northamptonshire
- Cornwell, Northamptonshire
- Coscote, Northamptonshire
- Cote, Northamptonshire
- Cothill, Northamptonshire
- Cottisford, Northamptonshire
- Cowleaze Corner, Northamptonshire
- Cowley, Northamptonshire
- Crawley, Northamptonshire
- Crays Pond, Northamptonshire
- Crocker End, Northamptonshire
- Cropredy, Northamptonshire
- Crowell, Northamptonshire
- Crowell Hill, Northamptonshire
- Crowmarsh Gifford, Northamptonshire
- Crowsley, Northamptonshire
- Cuddesdon, Northamptonshire
- Culham, Northamptonshire
- Cumnor, Northamptonshire
- Cumnor Hill, Northamptonshire
- Curbridge, Northamptonshire
- Cutteslowe, Northamptonshire
- Cuxham, Northamptonshire