Official and unofficial lists of the dead have converged for months around 3,000 dead, but even New York City agencies do not agree on the toll there. The police department lists 2,823 missing and dead, while the medical examiner's office trimmed that by four to 2,819 when it released a list of names this week to be read at anniversary ceremonies.

Comparable media tallies range from 2,786 to 2,814.

The toll of the other attacks is undisputed: 224, not counting hijackers. That includes 184 at the Pentagon and 40 in Pennsylvania.

In New York, the task is much larger. The city medical examiner has identified the remains of almost half of those reported missing. About as many have been declared dead by judges who heard evidence from families seeking death certificates, officials say.

But the city also counts about 90 names listed simply as missing. Some are foreigners reported by embassies using visa paperwork. Early embassy lists shrank considerably as travelers were found, and more names could be trimmed. For example, the Mexican Embassy recently removed the names of two people it had reported missing.

A number of media organizations have compiled unofficial lists from names released by airlines, the coroner's office, death certificates, families, mortuaries and employers. They continue to change as duplicates are removed and a handful are added or removed.

The Associated Press' list has gotten "tremendous interest" from newspapers and the public, says Sarah Nordgren, AP's deputy director of state news. She says AP is trying to clarify a few discrepancies between its list and the city's list.

The uncertainty extends beyond those in the trade center. Unofficial tallies still lack the name of one of the 65 people aboard United Airlines Flight 175, which crashed into the south tower. United spokesman Joe Hopkins confirmed 65 people were aboard. The FBI identified five as hijackers. But media tallies show the names of only 59, excluding hijackers.

United has released only 52 names — nine crewmembers and 43 passengers. Hopkins said United has given the FBI the full list but only releases names to the public with approval of survivors.