The percentage of Americans without health insurance hit 13.7 percent — the highest rate in four years, a poll out Wednesday shows.

The 2.8 percentage-point increase means that another 7 million Americans lack health coverage, a Gallup survey says.

The rate still falls below the high point of 18 percent recorded before the beginning of ObamaCare’s individual mandate in 2014, but it is well above the 10.9 percent reached in 2016.

The uninsured rate for people younger than 35 surged to 21.6 percent — a 4.8 percentage-point increase from two years ago.

It also went up for women, to 12.8 percent; for households with incomes between $24,000 and $48,000 a year, to 19.1 percent; and for those under $24,000, to 25.4 percent.

The uninsured rate for men rose 1.6 percentage points to 14.5 percent.

Regionally, the South saw the biggest increase in uninsured with a 3.8 percentage-point rise, the West followed at 3.6 percentage points, the Midwest at 3.2 percentage points and the East at 0.4 percentage points.

The analysis by Gallup suggested that higher premiums to cover ObamaCare mandates and uncertainty in the health care markets — President Trump’s comments that “ObamaCare is dead” and Republicans’ unsuccessful efforts to repeal and replace the plan — played a role in the increases.