According to North American Numbering Plan, 815312 located in ROCKFORD, Illinois. the first three digits 815 locate to state Illinois, 312 locate the city ROCKFORD, furthermore, we also provide some other information such as the zip code example(s) 61104, 61101, 61102, carrier YMAX COMMUNICATIONS CORP. - IL, and the latitude and longitude is 42.2713 -89.097. 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.

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