Bay, Midland, Saginaw, Tuscola, Arenac, and Iosco counties, Michigan

ZIP Codes:

48415, 48417, 48435, 48601, 48602, 48603, 48604, 48605, 48606, 48607, 48608, 48609, 48611, 48613, 48614, 48616, 48618, 48620, 48623, 48626, 48628, 48631, 48634, 48637, 48640, 48641, 48642, 48649, 48650, 48655, 48657, 48658, 48659, 48663, 48667, 48670, 48674, 48686, 48701, 48703, 48706, 48707, 48708, 48710, 48722, 48723, 48724, 48726, 48729, 48732, 48733, 48734, 48735, 48736, 48741, 48744, 48746, 48747, 48749, 48757, 48758, 48765, 48766, 48767, 48768, 48769, 48787

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