According to North American Numbering Plan, 503618 located in GRESHAM, Oregon. the first three digits 503 locate to state Oregon, 618 locate the city GRESHAM, furthermore, we also provide some other information such as the zip code example(s) 97030, 97080, carrier FRONTIER COMMUNICATIONS NORTHW, and the latitude and longitude is 45.5096 -122.4277. Please pay attention that the detail we provide only as a reference, the details of the zip code may be not complete, the latitude and longitude likely to have deviation.

Here are some random corresponding phone numbers.