BALTIMORE -- Maryland's population is projected to exceed 5 million by 2000, state officials say.

Officials said that figure is 7.3 percent more than the population projected for 1990, and 18.7 percent more than the actual population of slightly more than 4.216 million in 1980.

The projection is based on reports for Maryland subdivisions issued by the state Planning Department's Office of Planning Data.

Officials said Maryland's population is projected to grow by 10.65 percent during the 1980s, largely because of strong growth in Montgomery and Prince George's counties.

Those counties account for about 30 percent of Maryland's population.

Other counties continue growth they had in the 1970s, including Howard (48.5 percent), Calvert (41.5 percent), Charles (37.7 percent), Queen Anne's (30.5 percent), Carroll (25.4 percent) and Frederick (24.8 percent) counties.

Baltimore is projected to experience a slower population decline in this decade than in the 1970s, when it declined by 13.1 percent.

"For the two-year period ending in April 1987, the state experienced a more rapid growth in population than it did for the first part of the 1980s," said Michel Lettre, assistant secretary of the Department of State Planning.

From April 1985 to April 1987, Maryland's population increased annually by 69,000.

More than half the increase from 1985 to 1987 is attributed to migration from other states and abroad.