About 02451 - Waltham, Massachusetts
The ZIP code 02451 of Waltham falls within Massachusetts, the United States - a mid-sized area by population. It sits within Waltham County County.
Census data puts the population of this ZIP code at 31,396 residents. That's noticeably above the average for a Massachusetts ZIP code, which sits near 21,659 people.
Median household income is about $90,600 (near the Massachusetts average).
This ZIP code sits alongside neighboring areas like Templeton, Dighton, Manchester within Massachusetts.