Dennis Washington

Dennis Washington

Dennis Washington (#486)

Global Rank #486
Country Rank #191
Country United States

People always ask me for my secret. There isn't one. You've just got to keep a level head and stay away from greed. I just think in my life I relied on my instincts and had good intuition, and things just kind of fell into place.

  • $ 8 B
  • Construction, mining
  • United States
  • M
  • 91 Years

Snapshot

Quick Facts

Global Rank #486
Country Rank #191
Net Worth $7.7B
Previous Worth $7.7B
Worth Change +$0.0B
Country United States
Industry Construction, mining
Age 91 Years
Gender M
Worth As Of May 4, 2026
Residence Missoula, Montana
Citizenship United States
World Billionaires List United States Billionaires Construction, mining

Profile Data

Personal Stats

Age 91
Source Of Wealth Construction, mining, Self Made
Self Made Score 10
Philanthropy Score 3
Residence Missoula, Montana
Citizenship United States
Marital Status Married
Children 2
Education Diploma, High School
Net Worth Change +$0.0B +0.0% from previous worth
Previous Net Worth $7.7B
Current Net Worth $7.7B

Worth as of May 4, 2026

About Me

Dennis Washington parlayed an early love of machinery into a diversified business group called Washington Companies. Washington owns copper mining, marine transportation and heavy equipment businesses. After working for his uncle's construction business, he struck out on his own with a $30,000 loan to start Washington Construction. Montana's richest person, Washington also has an investment in Seaspan Corp., cofounded by son Kyle, which now operates more than 220 container ships.

Achievements

Forbes List Highlights

A snapshot of the list placements and rankings connected to Dennis Washington.

#477
Billionaires (2026)
#181
Forbes 400 (2025)
Ranked
The Richest Person In Every State (2025)

Insights

Did You Know?

Washington got polio at age 8 and spent 8 months in a hospital and rehab clinic. He then spent time in government housing and shined shoes for pocket money.

The day after high school graduation, in 1952, Washington headed to Alaska where he started out greasing equipment, then became a heavy-crane operator.

Wealth Growth

Net Worth Growth Over Time

Tracking Dennis Washington's net worth journey over the years, highlighting key growth phases and financial milestones.

Worth Trend Net Worth Growth
Period Change Worth Movement
Current Net Worth: $7.7B (May 4, 2026)

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