In recent weeks the long waiting periods and website crashes have greatly improved.
Among those who enrolled, 62% or 227,478 bought covers in exchanges run by states. 137,204 individuals chose plans in the exchanges run by the federal government or in states operated by the HHS which runs the exchanges in partnership with the states.
Federal officials expected the health insurance enrollment through exchanges to continue to rise.
"Evidence of the technical improvements to HealthCare.gov can be seen in the enrollment numbers. More and more Americans are finding that quality, affordable coverage is within reach and that they'll no longer need to worry about barriers they may have faced in the past like being denied coverage because of a pre-existing condition," HHS Secretary Kathleen Sebelius said in a statement.
Among the states which run their own exchanges, reported enrollment information, that California had the most enrollees at 107,087, followed by New York with 45,513.
In states where the federal government runs exchanges, Florida had the most enrollments - 17,908 followed by Texas at 14,308.
Hannah Punitha (IRDA Licence Number: 2710062)
Jerry Geisel, December 2013