Reduce the list. Postcodes starting with:
Postcodes (27 items):
18400 (1)
18410 (3)
18411 (1)
18412 (1)
18413 (1)
18414 (8)
18415 (1)
18416 (1)
18417 (1)
18418 (5)
18420 (1)
18430 (1)
18438 (2)
18439 (1)
18440 (1)
18448 (2)
18449 (1)
18450 (2)
18451 (1)
18452 (1)
18460 (1)
18470 (2)
18480 (3)
18490 (1)
18491 (1)
18492 (3)
18494 (6)
Postcodes (27 items):
18400 (1)
18410 (3)
18411 (1)
18412 (1)
18413 (1)
18414 (8)
18415 (1)
18416 (1)
18417 (1)
18418 (5)
18420 (1)
18430 (1)
18438 (2)
18439 (1)
18440 (1)
18448 (2)
18449 (1)
18450 (2)
18451 (1)
18452 (1)
18460 (1)
18470 (2)
18480 (3)
18490 (1)
18491 (1)
18492 (3)
18494 (6)