If your postal code begins with any of the following, you're considered at risk for tickborne disease.

B0J, B0N, B1S, B2R, B2S, B2T, B2V, B2W, B2X, B2Y, B2Z, B3A, B3B, B3E, B3G, B3H, B3J, B3K, B3L, B3M, B3N, B3P, B3R, B3S, B3T, B3V, B3Z, B4A, B4B, B4C, B4E, B4G