Mosquito traps are pretty effective. Since mosquitoes don't tend to migrate very quickly, you won't get many new ones moving in as the nearby ones are trapped.

If it's feasible, you should reduce the amount of standing water around you. Also there are effective poisons (specifically https://en.wikipedia.org/wiki/Bacillus_thuringiensis_israele...) that you can add to puddles or ponds. Mosquitoes only live about a month so if you can keep them from spawning for that time the population will just die off.

Even an oscillating fan will mess with their navigation enough to discourage them in a small area.