Population

65,037

US Census estimate, July 2025

Median home value

$748,700

Owner-occupied units

Waltham, MA

Massachusetts · 42.389° N, 71.242° W · 13 sq mi

Waltham is a city in Massachusetts, with a population of 65,037 and about 5,103 residents per square mile. The median household earns $120,216 a year, and the median home is worth $748,700.

Conditions

Humidity & wind

—

UV index

—

Sunrise & sunset

—

Local time

—

Size & density

Land area

13 sq mi

Water excluded

Population density

5,103

People per square mile

Rank by population

#656

Of cities on this site

Rank by area

#775

Of cities on this site

Money & housing

Median household income

$120,216

US median ≈ $78,538

Median gross rent

$2,268

Per month

Homeownership

49.7%

US ≈ 65%

Average commute

24.7 min

One way

People

Median age

34.4

US median 39.1

Bachelor's degree +

57.3%

Age 25 and over

Foreign born

26.3%

Households

25,498

2.23 people each

What people here do for work

Education & health care 31.2^%

Professional & business services 18.5^%

Manufacturing 10.9^%

Retail trade 7.9^%

Top four industries · share of all workers · ACS 2024

Wealthiest person in Massachusetts

Name

Abigail Johnson

Forbes, Apr 2025

Net worth

$31.5B

As of 25 Apr 2025 — not live

Lives in

Milton

Source of wealth

Fidelity

Compiled from public reporting, not from an official dataset, and not independently verified.

Largest employer in Massachusetts · private sector

Employer

Mass General Brigham

Sector

Healthcare

Compiled from public reporting, not from an official dataset, and not independently verified. Government employers are excluded.

Largest public company in Massachusetts

Company

TJX

Revenue

$56.4B

Fiscal year 2024

Headquarters

Framingham

Ticker

TJX

Compiled from public reporting, not from an official dataset, and not independently verified.

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State of Massachusetts

State bird

Black-capped Chickadee

State flower

Mayflower

State capital

Boston

Nickname

The Bay State

Compare Waltham with

Cities near Waltham

Newton, MA4 mi · 90,741
Cambridge, MA6 mi · 122,588
Somerville, MA7 mi · 84,211
Brookline, MA7 mi · 63,266
Medford, MA7 mi · 59,834
Malden, MA10 mi · 66,370
Everett, MA10 mi · 53,572
Framingham, MA11 mi · 73,021