It's about 18 days from egg laying to hatching, then 20 - 40 days for the fledglings to leave the nest, so in about two months we'll probably be hearing the frequent loud squawks of the fledglings around town, bugging their parents to beak feed them even though the food is right there on the ground ready to eat.
Have you spotted a nest in some trees already? Crows tend to defend them quite well, dont they? I heard they attack people if they get to close.
They tend to be up in tall trees around my neighborhood, so the nests are hard to spot. But you can guess where they are because I've seen crows get territorial with each other when one flies up to the part of the tree where the other is.