Another sign that the economy is not recovering quickly enough: A significant number of Americans are still having trouble affording food.

According to Gallup, nearly one in five Americans say they didn't have enough money to pay for food at times this year. The poll results, based on the responses of nearly 180,000 American adults, were gathered through various surveys conducted from January through June.

Americans in southern states were the most likely to have a hard time buying groceries, while residents of the Mountain Plains and Midwest regions had the least trouble, Gallup found. Census data from 2011 showed that poverty rates rose the most in the South from 2009 to 2010, as compared to other regions in the United States.

The overall share of Americans who had trouble buying food -- 18.2 percent -- hasn't changed much from last year's slightly higher share of 18.6 percent.

While the 2012 data marks a slight improvement, the outlook for food affordability is not favorable. The U.S. Department of Agriculture recently said drought conditions, which have affected nearly half the country, will raise food prices for consumers even higher than they would already increase because of inflation. The drought will affect the price of the most basic items, such as milk, eggs, beef and poultry. By 2013, American consumers can expect to pay up to 4 percent more for groceries.

Reports of struggles with food affordability coincide with a recent survey by the Consumer Federation of America that raised red flags about Americans' overall lack of financial security. The survey found that nearly 40 percent of American households are subsisting paycheck to paycheck, barely making ends meet.

Here are 10 states where residents are most likely to have trouble paying for food, according to Gallup:

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  • 10. Lousiana

    20.7 percent of residents said they had trouble affording food at times during the past year.

  • 9. West Virgina

    20.9 percent of residents said they had trouble affording food at times during the past year.

  • 8. Tennessee

    21.3 percent of residents said they had trouble affording food at times during the past year.

  • 7. Oklahoma

    21.4 percent of residents said they had trouble affording food at times during the past year.

  • 6. Arkansas

    21.5 percent of residents said they had trouble affording food at times during the past year.

  • 5. Nevada

    21.5 percent of residents said they had trouble affording food at times during the past year.

  • 4. Georgia

    21.6 percent of residents said they had trouble affording food at times during the past year.

  • 3. Delaware

    22.1 percent of residents said they had trouble affording food at times during the past year.

  • 2. Alabama

    22.9 percent of residents said they had trouble affording food at times during the past year.

  • 1. Mississippi

    24.9 percent of residents said they had trouble affording food at times during the past year.

Earlier on HuffPost: