the average Social Security retirement benefit This Motley Fool article This Motley Fool article This Motley Fool article average Social Security check is $1,404 This Motley Fool article Americans’ Average Social Security Benefit at Age 66 This Motley Fool article This Motley Fool article This Motley Fool article This Motley Fool article This Motley Fool article average Social Security benefit This Motley Fool article This Motley Fool article This Motley Fool article This Motley Fool article This Motley Fool article This Motley Fool article This Motley Fool article This Motley Fool article Americans’ Average Social Security Benefit at Age 66