ZIP Code Tabulation Area · Massachusetts

ZIP Code 02451: Waltham, MA

ZIP Code 02451 (Waltham, Middlesex County, Massachusetts) has an estimated 17,393 residents in 7,481 households. The median household income is $122,335, the median home value is $753,000 and the median gross rent is $2,677/mo. Figures are U.S. Census Bureau American Community Survey 2020–2024 5-year estimates for the matching ZIP Code Tabulation Area.

American Community Survey 2020–2024 5-year estimates · Updated

Total population

17,393

Margin of error ±1,277

Median household income

$122,335

Margin of error ±$10,961

Median home value

$753,000

Margin of error ±$38,509

Median gross rent

$2,677/mo

Margin of error ±$219

Median age

40.3 yrs

Margin of error ±2.5 yrs

Mean travel time to work

26.1 min

Margin of error ±4.3 min

How ZIP 02451 compares with Massachusetts and the U.S.

State and national figures are the Census Bureau's own estimates for those areas from the same ACS release, not averages of ZIP codes.

Median age

ZIP 0245140.3 yrsMassachusetts40.0 yrsUnited States38.9 yrs

Median household income

ZIP 02451$122,335Massachusetts$103,960United States$80,734

Per capita income

ZIP 02451$67,455Massachusetts$57,897United States$44,673

Poverty rate

ZIP 024518.3%Massachusetts10.0%United States12.5%

Unemployment rate

ZIP 024513.5%Massachusetts5.2%United States5.2%

Bachelor's degree or higher

ZIP 0245156.0%Massachusetts47.3%United States35.7%

Median home value

ZIP 02451$753,000Massachusetts$562,100United States$332,700

Median gross rent

ZIP 02451$2,677/moMassachusetts$1,762/moUnited States$1,413/mo

Owner-occupied homes

ZIP 0245159.3%Massachusetts62.5%United States65.2%

Mean travel time to work

ZIP 0245126.1 minMassachusetts29.1 minUnited States26.4 min

Worked from home

ZIP 0245121.2%Massachusetts18.6%United States15.1%

All figures for ZIP 02451

Each estimate has a 90% margin of error: the true value is likely within that range. * marks estimates with a large margin of error (a coefficient of variation above 30%, or ±10 percentage points or more for rates).

ZIP 02451 — ACS 2020–2024 5-year estimates
MeasureZIP 02451Margin of errorMassachusettsUnited States
Total population17,393±1,2777,044,056334,922,499
Median age40.3 yrs±2.5 yrs40.0 yrs38.9 yrs
Households7,481±4682,785,042129,227,496
Median household income$122,335±$10,961$103,960$80,734
Per capita income$67,455±$5,755$57,897$44,673
Poverty rate8.3%±3.1 pts10.0%12.5%
Unemployment rate3.5%±1.3 pts5.2%5.2%
Bachelor's degree or higher56.0%±3.0 pts47.3%35.7%
Median home value$753,000±$38,509$562,100$332,700
Median gross rent$2,677/mo±$219$1,762/mo$1,413/mo
Owner-occupied homes59.3%±4.7 pts62.5%65.2%
Mean travel time to work26.1 min±4.3 min29.1 min26.4 min
Worked from home21.2%±3.3 pts18.6%15.1%

Race and Hispanic or Latino origin

Shares of the total population by the Census Bureau's race and Hispanic or Latino origin categories (table B03002), listed in the Census Bureau's order. People self-identify on the survey.

Population by race and Hispanic or Latino origin, ZIP 02451
GroupZIP 02451MassachusettsUnited States
White alone, not Hispanic or Latino55.4%66.6%57.4%
Black or African American alone, not Hispanic or Latino8.5%6.4%11.9%
American Indian and Alaska Native alone, not Hispanic or Latino0.0%0.1%0.5%
Asian alone, not Hispanic or Latino17.0%7.3%5.9%
Native Hawaiian and Other Pacific Islander alone, not Hispanic or Latino0.0%0.0%0.2%
Some other race alone, not Hispanic or Latino0.7%1.2%0.6%
Two or more races, not Hispanic or Latino3.2%5.1%4.3%
Hispanic or Latino (of any race)15.2%13.3%19.3%

Where ZIP 02451 is

State
Massachusetts
Main county
Middlesex County
Largest overlapping place
Waltham (100% of the ZIP's land area)
Land area
5.32 sq mi· about 3,269 people per sq mi

County and place names come from the Census Bureau's 2020 ZCTA relationship files. A ZIP code's mailing city, set by the U.S. Postal Service, can differ from these names.

Other ZIP codes in Middlesex County

02145 Somerville, MA02148 Malden, MA02149 Everett, MA02155 Medford, MA02176 Melrose, MA02180 Stoneham, MA02420 Lexington, MA02421 Lexington, MA02452 Waltham, MA02453 Waltham, MA02458 Newton, MA02459 Newton, MA02460 Newton, MA02461 Newton, MA02462 Newton, MA02464 Newton, MA02465 Newton, MA02466 Newton, MA02468 Newton, MA02472 Watertown Town, MA02474 Arlington, MA02476 Arlington, MA02478 Belmont, MA02493 Middlesex County, MA

See every ZIP code in Massachusetts, or compare ZIP 02451 with another ZIP code.

Census figures describe residents as a group and cannot tell you about any one home or street. For a specific address, check local government and housing records.

About ZIP codes and ZCTAs: the Census Bureau publishes statistics for ZIP Code Tabulation Areas, which approximate USPS ZIP code delivery areas. Learn how they differ.

Sources

  • U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, detailed tables B01003, B01002, B11001, B19013, B19301, B17001, B23025, B15003, B25077, B25064, B25003, B08013, B08303, B08301, B03002 — snapshot Oct 26, 2026.
  • U.S. Census Bureau, 2020 ZCTA5 relationship files (county and place).
  • Data: U.S. Census Bureau, American Community Survey 5-year estimates (detailed tables) and 2020 Census ZCTA relationship files. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau. These agencies do not endorse OpenZIP.