Yes, but to be super pedantic, it stayed within the 1MB barrier[1] that real mode could "officially" address. It was perfectly okay to have your EMS window above the A000h segment in memory, i.e. above 640k, if no device was using it.
[1] Plus some change known as the "high memory area" (HMA), an artifact of how linear addresses are calculated from segment and offset.
Expanded memory (EMS) is bank switched RAM that stays inside the 640K barrier.