WASHINGTON — The number of Americans seeking unemployment benefits rose last week to 770,000, a sign that layoffs remain high even as much of the U.S. economy is steadily recovering from the coronavirus recession.

Thursday's report from the Labor Department showed that jobless claims climbed from 725,000 the week before. The numbers have dropped sharply since the depths of the recession last spring but still show that employers in some industries continue to lay off workers. Before the pandemic struck, applications for unemployment aid had never topped 700,000 in any one week.

The four-week average of claims, which smooths out weekly variations, dropped to 746,000, the lowest since late November.

A total of 4.1 million people are continuing to collect traditional state unemployment benefits, down 18,000 from the previous week. Including separate federal programs that are intended to help workers displaced by the health crisis, 18.2 million Americans were receiving some form of jobless aid in the week of Feb. 27, down by 1.9 million from the week before.

The continuing layoffs are occurring even as the overall job market has shown solid improvement. Last month, U.S. employers added a robust 379,000 jobs, the most since October and a sign that the economy is strengthening as consumers spend more and states and cities ease business restrictions.

No single factor fully explains the still-high level of weekly applications for state unemployment aid. The figures have been clouded by backlogs in processing and by evidence of fraud at the state level. In addition, the expansion of supplemental federal unemployment benefits has likely encouraged more jobless Americans to apply for aid.

In addition, last month's severe winter weather elevated jobless claims in Texas. And California has reported an uptick in applications because of layoffs at bars, restaurants, retailers and other services businesses — all of which have been hard hit by the pandemic.

Yet with vaccinations accelerating, hopes are rising that Americans will increasingly travel, shop, eat out and spend freely after a year of virus-induced restraint.

President Joe Biden's $1.9 trillion relief package is also expected to help accelerate growth, especially with most adults this week receiving $1,400 stimulus checks that should fuel more spending. An extension of $300 weekly unemployment benefits into early September will provide support, too, along with money for vaccines and treatments, school re-openings, state and local governments and ailing industries ranging from airlines to concert halls. 

"Labor market strains are ongoing, but we expect filings (for unemployment aid) to start declining as restrictions are lifted and more normal operations resume," Rubeela Farooqi, chief U.S. economist at High Frequency Economics, said in a research note. "As businesses return to full capacity, job and income prospects will improve and, combined with fiscal support, will provide a powerful lift to the economy.''

At the same time, the nation is still roughly 9.5 million short of the number of jobs it had in February 2020. And Federal Reserve Chair Jerome Powell suggested Wednesday after the Fed's latest policy meeting that the overall economic outlook remained cloudy.

"The state of the economy in two or three years is highly uncertain," Powell said at a news conference after the Fed signaled that it expects to keep its key interest rate near zero through 2023 despite some solid economic gains and concerns about rising inflation pressures.

By most barometers, business activity in the economy's vast and hard-hit service sector is still far from normal. The data firm Womply said, for example, that as of early last week 63% of movie theaters, galleries and other entertainment venues were closed. So were 39% of bars, 32% of gyms and other sports and recreation businesses and 30% of restaurants.