Calculate the exact straight-line distance (miles & km), estimated driving distance, USPS Postal Zone & Mail Delivery Days between any two ZIP codes or postcodes, and find all codes within a radius.
We compute the exact geodesic (Haversine) distance between the verified WGS84 centroids of both postal codes in miles and kilometers, plus an estimated road driving distance and compass bearing.
Mail transit time depends on the USPS Postal Zone (Zones 1 to 8, based on distance in miles) or national carrier distance. Local Zone 1–2 mail typically arrives in 1–2 business days, while cross-country Zone 8 mail takes 3–5 business days.
Enter your origin postal code and select a radius (e.g. 10 km, 25 km, or 50 km). The calculator lists all surrounding postal codes sorted by exact distance.