More than half of the counties in 34 states using the federal health insurance exchange lack even a bronze plan that’s affordable — by the government’s own definition — for 40-year-old couples who make just a little too much for financial assistance, a USA TODAY analysis shows.

Many of these counties are in rural, less populous areas that already had limited choice and pricey plans, but many others are heavily populated, such as Bergen County, N.J., and Philadelphia and Milwaukee counties.

More than a third don’t offer an affordable plan in the four tiers of coverage known as bronze, silver, gold or platinum for people buying individual plans who are 50 or older and ineligible for subsidies.

Those making more than 400% of the federal poverty limit — $47,780 for an individual or $61,496 for a couple — are ineligible for subsidies to buy insurance.