The 15 most congested cities in the US

Traffic in New York City.

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Traffic in New York City.
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Drew Angerer/Getty Images

  • The transportation data firm INRIX Research released in February its annual ranking of the most congested cities in the US.
  • Cities were ranked based on delays caused by congestion, adjusted for each city’s population.
  • Boston was named the most congested city in the US for the second year in a row.

AAA projects that 37.6 million Americans will travel by car this Memorial Day weekend, which would make it one of the busiest holiday weekends for travel since 2000. For those who live in the biggest cities in the US, holiday travel will only add to the congestion they experience on a daily basis.

The transportation data firm INRIX Research released in February its annual ranking of the most congested cities in the US, measuring the amount of time lost per capita in 2018 due to the difference between traffic at the busiest and least busy commuting times each day. Cities were ranked based on delays caused by congestion, adjusted for each city’s population. INRIX also measured the per capita and overall cost of congestion for each city.

Boston was named the most congested city in the US for the second year in a row. INRIX attributed the city’s congestion to its age, population density, and geographic characteristics.

These are the most congested cities in the US.


15. Baltimore, MD

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Ben Schumin/Wikimedia Commons

Hours lost in congestion per capita: 94

Cost of congestion per driver: $1,315

Total cost of congestion for city: $1.3 billion


14. Austin, TX

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Philip Lange/Shutterstock

Hours lost in congestion per capita: 104

Cost of congestion per driver: $1,452

Total cost of congestion for city: $1.2 billion


13. Houston, TX

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Stan Honda/Getty Images

Hours lost in congestion per capita: 98

Cost of congestion per driver: $1,365

Total cost of congestion for city: $3.8 billion


12. Miami, FL

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Joe Skipper/Reuters

Hours lost in congestion per capita: 105

Cost of congestion per driver: $1,470

Total cost of congestion for city: $4 billion


11. Atlanta, GA

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Erik S. Lesser/Getty Images

Hours lost in congestion per capita: 108

Cost of congestion per driver: $1,505

Total cost of congestion for city: $3.5 billion


10. Portland, OR

Hours lost in congestion per capita: 116

Cost of congestion per driver: $1,625

Total cost of congestion for city: $1.4 billion


9. Philadelphia, PA

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Andrea Izzotti/Shutterstock

Hours lost in congestion per capita: 112

Cost of congestion per driver: $1,568

Total cost of congestion for city: $3.3 billion


8. San Francisco, CA

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MediaNews Group/The Mercury News via Getty Images

Hours lost in congestion per capita: 116

Cost of congestion per driver: $1,624

Total cost of congestion for city: $3.4 billion


7. Pittsburgh, PA

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Melissa Ross/Getty Images

Hours lost in congestion per capita: 127

Cost of congestion per driver: $1,776

Total cost of congestion for city: $1.2 billion


6. Seattle, WA

Hours lost in congestion per capita: 138

Cost of congestion per driver: $1,932

Total cost of congestion for city: $2.9 billion


5. Los Angeles, CA

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Kevork Djansezian/Getty Images

Hours lost in congestion per capita: 128

Cost of congestion per driver: $1,788

Total cost of congestion for city: $9.3 billion


4. New York City, NY

Traffic in New York City.

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Drew Angerer/Getty Images

Hours lost in congestion per capita: 133

Cost of congestion per driver: $1,859

Total cost of congestion for city: $9.5 billion


3. Chicago, IL

Hours lost in congestion per capita: 138

Cost of congestion per driver: $1,920

Total cost of congestion for city: $6.2 billion


2. Washington, DC

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REUTERS/Jason Reed

Hours lost in congestion per capita: 155

Cost of congestion per driver: $2,161

Total cost of congestion for city: $4.6 billion


1. Boston, MA

Hours lost in congestion per capita: 164

Cost of congestion per driver: $2,291

Total cost of congestion for city: $4.1 billion