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Most Peaceful, Least Peaceful U.S. States

Country Is Less Violent Now Than Any Time in Last 20 Years, Report Suggests

By Cari Nierenberg
WebMD Health News

Reviewed By Louise Chang, MD

April 25, 2012 -- For the 11th year in a row, Maine is the most peaceful state in America, according to the 2012 United States Peace Index report.

The report, produced by the Institute for Economics and Peace in Washington, D.C., also named Louisiana as the country's least peaceful state. It has held this position for the last 20 years.

To create this annual coast-to-coast ranking, researchers looked at five key measurements.

Each state's peace index score was determined by analyzing its homicide, violent crime, policing, and prison rates, as well as by the availability of guns among its residents.

Maine earned the No. 1 spot by having the lowest levels in the land for violent crime, people in prison, and number of police employees. It was one of four New England states to make the nation's top 10 most peaceful places.

The report defined peace as "the absence of violence."

States Improving

Wyoming made the biggest strides to becoming a more peaceful state, moving from 23rd place last year to 17th place in 2012. Meanwhile, Arizona slipped into the bottom five because of a rising homicide rate.

There were encouraging signs with 35 out of 50 states improving this year. Forty states had reduced levels of violent crime, 34 states sent fewer people to prison, and 29 had lower homicide rates.

Among regions, the Northeast was considered the most peaceful area with the country's lowest homicide, violent crime, and prison rates. It was followed by the Midwest, West, and lastly, the South, which had the highest rates of gun ownership.

The report shows "that over the past 20 years, America has become substantially more peaceful, witnessing a significant and sustained reduction in direct violence," Institute for Economics and Peace Chairman Steve Killelea says in a news release.

He credits this to lower homicide rates in the U.S., which have been cut in half since 1991, and a nearly 50% drop in rates of violent crime during the same period.

Here are the 10 most peaceful states for 2012:

  1. Maine
  2. Vermont
  3. New Hampshire
  4. Minnesota
  5. Utah
  6. North Dakota
  7. Washington
  8. Hawaii
  9. Rhode Island
  10. Iowa

Here are the 10 least peaceful states for 2012:

  1. Louisiana
  2. Tennessee
  3. Nevada
  4. Florida
  5. Arizona
  6. Missouri
  7. Texas
  8. Arkansas
  9. South Carolina
  10. Mississippi

For the first time, the report also rated the nation's 61 largest metropolitan areas.

Here are the 5 most peaceful U.S. metro areas/cities:

  1. Cambridge-Newton-Framingham, Mass.
  2. Edison-New Brunswick, N.J.
  3. Seattle-Bellevue-Everett, Wash.
  4. Minneapolis-St. Paul-Bloomington, Minn.-Wis.
  5. Peabody, Mass.

Here are the 5 least peaceful U.S. metro areas/cities:

  1. Detroit-Livonia-Dearborn, Mich.
  2. New Orleans-Metairie-Kenner, La.
  3. Miami-Miami Beach-Kendall, Fla.
  4. Baltimore-Towson, Md.
  5. Houston-Sugar Land-Baytown, Texas

For a complete listing of all 50 states and 61 cities, download the full report at


2012 United States Peace Index Report, Institute for Economics and Peace.

News release, Institute for Economics and Peace.

© 2012 WebMD, LLC. All rights reserved.

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