Region – The Avidia Charitable Foundation recently donated $1,500 to the Polus Center for Social and Economic Development. This donation helped support the Ski Day at Wachusett Mountain for those with developmental disabilities. Avidia Bank is a $1.2 billion mutual community bank, headquartered in Hudson, with branches in Hudson, Westborough, Clinton, Leominster, Marlborough, Northborough and Shrewsbury.