 west newbury is a town in essex county, massachusetts, united states. situated on the merrimack river, its population was 4,235 at the 2010 census. == history == thumb|left|post office square, c. 1905 west newbury was first settled in 1635 as part of neighboring newbury. on february 18, 1819, the general court of massachusetts passed an act "to incorpor
West_Newbury,_Massachusetts