Police in Montgomery County will get a 2.1 percent pay raise, their first in four years, the county police union announced Monday.

Under a newly ratified agreement, all members of the Fraternal Order of Police will receive the raise July 1, the beginning of the county’s fiscal year. Union members who are not already at the top of their pay grades — roughly two-thirds — also will receive a 1.75 percent step increase in February, followed by another step increase in the second year of the contract.