WASHINGTON — People who signed up for coverage under President Barack Obama’s health care law are paying about $80 a month in premiums on average, the administration reported Wednesday.

The new numbers from the Health and Human Services Department cover only the 36 states where the federal government took the lead in setting up new insurance markets, accounting for about 5.4 million of the 8 million people who signed up nationally.

Among the major findings:

Taxpayers are subsidizing 76 percent of the average monthly premium in the 36 federally administered markets.

 The average premium is $346 a month, but the typical enrollee pays just $82. Tax credits averaging $264 a month cover the difference.

 After tax credits, Mississippians paid the least for coverage – averaging just $23 a month on average premiums of $438. Among people in the 36 states, New Jersey residents paid the most – an average of $148 on premiums averaging $465 a month.

 For this year, the average consumer could pick from five insurance companies and 47 different plans. From a range of platinum, gold, silver and bronze plans, most people picked silver.

 There was a link between greater competition and lower premiums. For each additional insurer in a local market, premiums for the benchmark silver plan declined by 4 percent.