A closer look at U.S. military deaths in Iraq:

. Percentages by service branch: Army: 72 percent; Marines: 24 percent; Navy: 2 percent; Air Force: 1 percent (Coast Guard had one death.)

. Percentages by service force: Active duty: 83 percent; National Guard: 10 percent; Reserve: 6 percent.

. Percent who died since President Bush declared major combat ended: 97 percent

. Months with the most deaths since the start of the war: November 2004: 137; April 2004: 135; May 2007: 126; December 2006: 112; January 2005: 107

. Iraq provinces with most deaths since the start of war: Baghdad: 1,107; Anbar: 1,099; Salaheddin: 512; Nineveh: 220; Diyala: 135

. Percentage killed by an improvised explosive device: 44 percent in 2007; 55 percent to date in 2008

. Percent of deaths that were nonhostile: 18 percent

. Number who died of illness: 66

. Percent who were officers: 9 percent

. Number older than 45 years: 83

. Number who were age 18: 33

. Number of women: 98

. Percent of the dead who were women: 2 percent

. Percentages by ethnic group: White: 75 percent; Hispanic or Latino: 11 percent; Black or African American: 9 percent; Asian: 2 percent; multiple races, pending, or unknown: 1 percent; American Indian or Alaska Native: 1 percent; Native Hawaiian or Pacific Islander: 1 percent

. Number from California, the most of any home state: 429

. Number from Wyoming, least of any home state: 12 (Washington, D.C.: 6 deaths)

. Number from Texas: 370

. Number from New York state: 173

. Number from Puerto Rico: 33

. Number from Maine: 40 (includes those with close ties to the state)

. Percent from the South (region according to U.S. Census Bureau): 36 percent

. Percent from the Northeast (region according to U.S. Census Bureau): 15 percent

. Highest deaths per capita (based on U.S. Census population estimates): Vermont, 3.22; Nebraska, 2.42; Alaska, 2.34; Montana and Wyoming, 2.30; South Dakota, 2.26

NOTE ON NUMBERS: The numbers are based on counts by the Department of Defense and The Associated Press. Most items are based on information obtained by the Department of Defense for 3,980 deaths, as of March 10. The AP’s count, which includes deaths reported by news staff in Iraq, has been consistently somewhat ahead of the Department of Defense count. The AP’s count reached 4,000 on Sunday. The percentages for minorities and officers and number of nonhostile illnesses were last updated on March 1. Total deaths in AP’s calculations include eight civilians working for the military.