The American housing market, where the global economic crisis began, is far from hitting bottom.

Home prices across much of the country are likely to fall through late 2009, economists say, and in some markets the trend could last even longer depending on the severity of the anticipated recession.

In hard-hit areas like California, Florida and Arizona, the grim calculus is the same: More and more homes are going up for sale, but fewer and fewer people are willing or able to buy them.

Adding to the worries nationwide are rising unemployment, falling wages and escalating mortgage rates  all of which will reduce the already diminished pool of would-be buyers.

“The No. 1 thing that drives housing values is incomes,” said Todd Sinai, an associate professor of real estate at the Wharton School at the University of Pennsylvania. “When incomes fall, demand for housing falls.”