Greene County, where the median family income is $24,604, ranked dead last.

The county-by-county survey is to be released today by Voices for Alabama’s Children, a nonprofit group based in Montgomery. The report is based on factors involving health, education and economics.

The list largely shows the gap between rich and poor Alabama families. Children in more affluent counties tend to fare better, while children in poorer counties do worse, said Linda Tilly, executive director of Voices for Alabama’s Children.

In the nationwide report that measures the condition of children in each state, Alabama ranked 47th this year.

Within Alabama, Shelby topped the annual list followed by Baldwin, Blount, Lee and Lauderdale counties.

Clumped at the bottom are the rural, poor counties with high minority populations. Green County ranked last, preceded by Bullock, Wilcox, Sumter and Perry counties.

Jefferson, Alabama’s most populous county, ranked 41st of the 67 counties.

The report details the stark contrasts between the lives of children in counties at the top of the list and those in the counties at the bottom.

In Greene County, 20.5 percent of children live in extreme poverty. In Shelby County, 3.4 percent do. Extreme poverty is defined as a family of four with an income of $8,731.50 or less.

In Greene County, 54.1 percent of women receive first-trimester prenatal care. In Shelby County, 90.1 do. In Greene County, the projected school drop-out rate is 20.9 percent. In Shelby County, it’s a 9.7 percent.

Tilly said that, to her, the report shows the state should not cut funding for social services and should do more in health and education.

“It is time, I think, we as a state wake up and see that investment in our children now is going to determine to a great extent what our state looks like in the next 15 or 20 years,” she said. “What kind of a work force we have. What kind of a consumer base we have. Who is able to afford a home.”