Waltham, MA 02451 ZIP Code Profile

Related Place Profiles:
Waltham, MA

ZIP Code 02451: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Waltham, MA 02451

Acceptable Alternative
North Waltham, MA 02451

  • ZIP Code Type: STANDARD
  • County: Middlesex County
  • Centroid: Latitude 42.399, Longitude -71.262
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes
  • Businesses Addresses: 1,107
  • PO Box Addresses: 0
  • Residential Addresses: 7,687
    • Multi-Family Addresses: 1,378
    • Single Family Addresses: 6,309

The ZIP Code maps and database are updated 4 times per year.
Database updated: August 1, 2018, Maps updated: August 1, 2018.

EXTREMELY LOCAL Demographic Data

Address Based Hyperlocal Data Input an address and get data & demographics for the pertinent census block group (CBG), a searchable map and a customized directory. The CBG is the smallest geographical unit used by the Census Bureau for reporting demographic data.


02451 ZIP Code Map

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Waltham, MA 02451 Data & Demographics (As of July 1, 2018)


Total Population 16,815
Population in Households 16,750
Population in Familes 12,631
Population in Group Qrtrs 65
Population Density2 2,813
Diversity Index3 60


Median Household Income $88,516
Average Household Income $115,786
Per Capita Income $48,845


Total Housing Units 7,476 (100%)
Owner Occupied HU 4,047 (54.1%)
Renter Occupied HU 3,035 (40.6%)
Vacant Housing Units 394 ( 5.3%)
Median Home Value $464,240
Average Home Value $504,472


Total Households 7,082
Average Household Size 2.37
Family Households 4,151
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.


2010-2017 2017-2022
Population 0.44% 0.47%
Households 0.27% 0.36%
Families 0.2% 0.34%
Median Household Income   2.64%
Per Capita Income   2.89%

Waltham, MA 02451 - Peer Comparisons by Rank and Percentile

The table below compares 02451 to the other 521 ZIP Codes in Massachusetts by rank and percentile using July 1, 2018 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 157 70th
Population Density # 125 76th
Diversity Index # 72 86th
Median Household Income # 207 60th
Per Capita Income # 158 70th

Additional comparisons and rankings can be made with a VERY EASY TO USE Massachusetts Census Data Comparison Tool.

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