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Onset

1. Onset, Massachusetts, United States [CDP]; population was 1,461 in 1990; housing units was 1,189 in 1990; location is 41°45'N 70°40'W; land area is 1.08 square miles (693 acres); water area is 0.22 square miles (138 acres); FIPS code is 51160 [SourceCBP]
2. Onset, Massachusetts, United States [Populated Place] is in Plymouth County; location is 41°44'30"N 70°39'30"W; elevation is 30 feet; was named in year 1978 [SourceGSP]
3. Onset, Massachusetts, United States Postal Service Zip Code is 02558 [SourcePSZ]