According to North American Numbering Plan, 515604 located in HUMBOLDT, Iowa. the first three digits 515 locate to state Iowa, 604 locate the city HUMBOLDT, furthermore, we also provide some other information such as the zip code example(s) 50548, carrier ONVOY, LLC - IA, and the latitude and longitude is 42.7187 -94.2181. 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.