By James Ramage 

The dollar pushed to an 11-year high against the euro on Friday after a strong U.S. jobs report solidified market expectations for the Federal Reserve to raise interest rates around midyear.

The euro fell to $1.0839 in late-afternoon trade in New York, its lowest level against the dollar since Sept. 4, 2003. The euro recovered slightly to close the session down 1.7% at $1.0846 in its largest one-day decline in six weeks.

The U.S. economy added 295,000 jobs and the unemployment rate ticked down to 5.5% in February, according to the Labor Department. Economists had predicted 240,000 jobs were created last month and the unemployment rate would fall to 5.6%.

The robust U.S. employment numbers stood as the latest blow to the euro this year, which is approaching parity with the dollar. Anemic growth and inflation have plagued the eurozone for more than a year, prompting the European Central Bank to take stimulus actions that also weaken the currency. In addition, tensions with Greece and a conflict bubbling between Ukraine and Russia have frightened investors away from eurozone assets periodically.

Meanwhile, U.S. data have shown improvement, particularly those for employment, which has encouraged investors to pour into dollar-denominated assets to benefit from stronger economic growth and the potential for higher interest rates. The Federal Reserve has said it would consider raising interest rates when the economy shows it has recovered sufficiently from the financial crisis.

Recent eurozone numbers have improved slightly but not enough for many investors. Negative interest rates, stubbornly high unemployment and the launch of the ECB's quantitative-easing program should keep steady downward pressure on euro against the dollar, said Scott Mather, chief investment officer of U.S. core strategy and portfolio manager of the Total Return Fund at Pacific Investment Management Co., which manages $1.68 trillion.

The ECB has cut interest rates, pushing its deposit rate to a minus 0.2% in an effort to stimulate growth. On Monday, the central bank will begin a EUR60 billion-a-month asset-purchase program that involves printing euros to buy bonds, which is expected to weaken the currency further.

The euro could slide by as much as 10% over 2015, "so parity with the dollar is certainly possible within the next few quarters," Mr. Mather said. And from the U.S. side of the equation, "the jobs report should further strengthen the dollar broadly, and against the euro in particular."

Some investors, though, predict the euro's fall will be more measured, as it has weakened significantly already, and the economy has started to show signs of life. The eurozone saw retail-sales gains in January, signaling that falling oil prices are fattening consumers' wallets, while Germany's industrial production in rose that month, sparking the currency bloc's biggest engine.

On Thursday, ECB President Mario Draghi raised growth and inflation forecasts for the region's economy.

"The easy money's already been made" in the weaker-euro trade, said Steve Lee, portfolio manager within fixed income at Nuveen Asset Management, which oversees more than $130 billion. "We think the eurozone economy will continue to improve."

Nuveen recently trimmed its bearish euro bets, although it expects the euro to weaken further against the dollar and the U.S. economy to outperform the eurozone's.

Still, the weaker euro is likely to benefit exporters and attract tourists, both of which could give the eurozone's economy a much-needed lift. Economists are hopeful that increased bank lending that comes with negative rates could boost investment.

Looking ahead, the dollar stands to gain in mid-February, when the Federal Reserve's policy-making committee meets. Investors and analysts predict that the February jobs data will persuade the Fed to drop "patient" from the meeting's statement. Doing so would signal that the Fed could raise rates as soon as this summer.

"The big picture is one of an improving U.S. job market. That's going to make it harder on the Fed to say no to a rate hike as early as June," said Joe Manimbo, senior market analyst at Western Union.

Fed funds futures, which investors use to bet on central-bank policy, showed Friday that investors and traders see a 46% likelihood of a rate increase in July, according to data from CME Group Inc. That compares with a 37% probability a day earlier.

In other trade, the dollar rose 0.5% against the yen, to 120.74 yen, the highest since Jan. 2.

Write to James Ramage at james.ramage@wsj.com