As in many places, women live longer than men, with a gap of about seven years, compared with the world average of 4.4 years.

North Korea has 5.9 million households, with an average of 3.9 people in each, according to the census.

The typical home is 50 to 75 square meters in size (540 to 800 square feet). About 85% of homes have access to running water and about 55% have a flush toilet.

The census provided only a glimpse of the country's economic structure, but even that produced some surprises. The occupation that provides the most employment-farming-has more women, 1.9 million, than men, 1.5 million.

The second-biggest occupation, working for the government or the military, employs 699,000 people. The census doesn't break that group down further, but the figure suggests North Korea's military isn't as large as had been thought.

The military is often portrayed by outside military analysts and media as a force of one million people, mostly conscripts who are required to serve 10 years.

The third-largest employment sector by number of workers is education, followed by machinery manufacturing, textiles and coal mining. About 40,000 people work in computer, electronic or optical-product manufacturing.

North Korea hasn't shared meaningful information about its economy or its financial system with the outside world since the early 1960s.

Outside estimates of its economic performance, most prominently an annual estimate by the South Korean central bank, the Bank of Korea, are filled with assumptions that even their authors say render them almost meaningless.

Word of the availability of the North Korea census data was disseminated last week on North Korea Economy Watch, a Web site run by Curtis Melvin, a Virginia-based graduate student in economics and a specialist in North Korea.