The Gallup Daily tracking poll interviewed more than 45,000 U.S. women from Jan. 2 to March 31 and found 63 percent of women with children age 18 or under worked outside the home. Fourteen percent of American women have a child under age 18 and aren't formally employed.
Education is the main predictor of women working. The percentage of mothers who were employed rose from 48 percent among those with no college education to 66 percent of those with some college, 75 percent of those with a college degree and 84 percent of those with postgraduate education.
The same was true for men, but in larger percentages. Seventy-six percent of men with no college were employed, 83 percent of men with some college were employed, 92 percent of men with a college degree were employed and 94 percent of men with a postgraduate degree were employed.
The stay-at-home mothers were more economically disadvantaged than working mothers, the survey said.
Low-income mothers are far less likely to be employed, mainly due to childcare costs.
The margin of error for the women was 1 percentage point, but for the 4,176 stay-at-home mothers the margin of error was 2 percentage points.