A PO BOX number can be less than or more than four digit. For post office boxes, the general rule is that each box has its own ZIP+4 code.
The last four digit is often one of the following:
1. Zero plus the last three digits of the box number (eg. PO BOX 1001, Los Angeles CA 90001-0001).
2. The last four digits of the box number (eg. PO BOX 9991, Twin Peaks CA 92391-9991).
3. If the box number is less than four digits, enough zeros prepended to the front of the box number to produce a four-digit number(eg. PO BOX 1, Shreveport LA 71161-0001).
However, there is no uniform rule, the zip code plus four is for reference only, the ZIP+4 code must be looked up individually for each box in the USPS offical website.
PO BOX 3505, BERKELEY, CA 94703-0505
PO BOX 3506, BERKELEY, CA 94703-0506
PO BOX 3507, BERKELEY, CA 94703-0507
PO BOX 3508, BERKELEY, CA 94703-0508
PO BOX 3509, BERKELEY, CA 94703-0509
PO BOX 3510, BERKELEY, CA 94703-0510
PO BOX 3511, BERKELEY, CA 94703-0511
PO BOX 3512, BERKELEY, CA 94703-0512
PO BOX 3513, BERKELEY, CA 94703-0513
PO BOX 3514, BERKELEY, CA 94703-0514
PO BOX 3515, BERKELEY, CA 94703-0515
PO BOX 3516, BERKELEY, CA 94703-0516
PO BOX 3517, BERKELEY, CA 94703-0517
PO BOX 3518, BERKELEY, CA 94703-0518
PO BOX 3519, BERKELEY, CA 94703-0519
PO BOX 3520, BERKELEY, CA 94703-0520
PO BOX 3521, BERKELEY, CA 94703-0521
PO BOX 3522, BERKELEY, CA 94703-0522
PO BOX 3523, BERKELEY, CA 94703-0523
PO BOX 3524, BERKELEY, CA 94703-0524
PO BOX 3525, BERKELEY, CA 94703-0525
PO BOX 3526, BERKELEY, CA 94703-0526
PO BOX 3527, BERKELEY, CA 94703-0527
PO BOX 3528, BERKELEY, CA 94703-0528
PO BOX 3529, BERKELEY, CA 94703-0529
PO BOX 3530, BERKELEY, CA 94703-0530
PO BOX 3531, BERKELEY, CA 94703-0531
PO BOX 3532, BERKELEY, CA 94703-0532
PO BOX 3533, BERKELEY, CA 94703-0533
PO BOX 3534, BERKELEY, CA 94703-0534
PO BOX 3535, BERKELEY, CA 94703-0535
PO BOX 3536, BERKELEY, CA 94703-0536
PO BOX 3537, BERKELEY, CA 94703-0537
PO BOX 3538, BERKELEY, CA 94703-0538
PO BOX 3539, BERKELEY, CA 94703-0539
PO BOX 3540, BERKELEY, CA 94703-0540
PO BOX 3541, BERKELEY, CA 94703-0541
PO BOX 3542, BERKELEY, CA 94703-0542
PO BOX 3543, BERKELEY, CA 94703-0543
PO BOX 3544, BERKELEY, CA 94703-0544
PO BOX 3545, BERKELEY, CA 94703-0545
PO BOX 3546, BERKELEY, CA 94703-0546
PO BOX 3547, BERKELEY, CA 94703-0547
PO BOX 3548, BERKELEY, CA 94703-0548
PO BOX 3549, BERKELEY, CA 94703-0549
PO BOX 3550, BERKELEY, CA 94703-0550
PO BOX 3551, BERKELEY, CA 94703-0551
PO BOX 3552, BERKELEY, CA 94703-0552
PO BOX 3553, BERKELEY, CA 94703-0553
PO BOX 3554, BERKELEY, CA 94703-0554
PO BOX 3555, BERKELEY, CA 94703-0555
PO BOX 3556, BERKELEY, CA 94703-0556
PO BOX 3557, BERKELEY, CA 94703-0557
PO BOX 3558, BERKELEY, CA 94703-0558
PO BOX 3559, BERKELEY, CA 94703-0559
PO BOX 3560, BERKELEY, CA 94703-0560
PO BOX 3561, BERKELEY, CA 94703-0561
PO BOX 3562, BERKELEY, CA 94703-0562
PO BOX 3563, BERKELEY, CA 94703-0563
PO BOX 3564, BERKELEY, CA 94703-0564
PO BOX 3565, BERKELEY, CA 94703-0565
PO BOX 3566, BERKELEY, CA 94703-0566
PO BOX 3567, BERKELEY, CA 94703-0567
PO BOX 3568, BERKELEY, CA 94703-0568
PO BOX 3569, BERKELEY, CA 94703-0569
PO BOX 3570, BERKELEY, CA 94703-0570
PO BOX 3571, BERKELEY, CA 94703-0571
PO BOX 3572, BERKELEY, CA 94703-0572
PO BOX 3573, BERKELEY, CA 94703-0573
PO BOX 3574, BERKELEY, CA 94703-0574
PO BOX 3575, BERKELEY, CA 94703-0575
PO BOX 3576, BERKELEY, CA 94703-0576
PO BOX 3577, BERKELEY, CA 94703-0577
PO BOX 3578, BERKELEY, CA 94703-0578
PO BOX 3579, BERKELEY, CA 94703-0579
PO BOX 3580, BERKELEY, CA 94703-0580
PO BOX 3581, BERKELEY, CA 94703-0581
PO BOX 3582, BERKELEY, CA 94703-0582
PO BOX 3583, BERKELEY, CA 94703-0583
PO BOX 3584, BERKELEY, CA 94703-0584
PO BOX 3585, BERKELEY, CA 94703-0585
PO BOX 3586, BERKELEY, CA 94703-0586
PO BOX 3587, BERKELEY, CA 94703-0587
PO BOX 3588, BERKELEY, CA 94703-0588
PO BOX 3589, BERKELEY, CA 94703-0589
PO BOX 3590, BERKELEY, CA 94703-0590
PO BOX 3591, BERKELEY, CA 94703-0591
PO BOX 3592, BERKELEY, CA 94703-0592
PO BOX 3593, BERKELEY, CA 94703-0593
PO BOX 3594, BERKELEY, CA 94703-0594
PO BOX 3595, BERKELEY, CA 94703-0595
PO BOX 3596, BERKELEY, CA 94703-0596
PO BOX 3597, BERKELEY, CA 94703-0597
PO BOX 3598, BERKELEY, CA 94703-0598
PO BOX 3599, BERKELEY, CA 94703-0599
PO BOX 3600, BERKELEY, CA 94703-0600
PO BOX 3601, BERKELEY, CA 94703-0601
PO BOX 3602, BERKELEY, CA 94703-0602
PO BOX 3603, BERKELEY, CA 94703-0603
PO BOX 3604, BERKELEY, CA 94703-0604
PO BOX 3605, BERKELEY, CA 94703-0605
PO BOX 3606, BERKELEY, CA 94703-0606
PO BOX 3607, BERKELEY, CA 94703-0607
PO BOX 3608, BERKELEY, CA 94703-0608
PO BOX 3609, BERKELEY, CA 94703-0609
PO BOX 3610, BERKELEY, CA 94703-0610
PO BOX 3611, BERKELEY, CA 94703-0611
PO BOX 3612, BERKELEY, CA 94703-0612
PO BOX 3613, BERKELEY, CA 94703-0613
PO BOX 3614, BERKELEY, CA 94703-0614
PO BOX 3615, BERKELEY, CA 94703-0615
PO BOX 3616, BERKELEY, CA 94703-0616
PO BOX 3617, BERKELEY, CA 94703-0617
PO BOX 3618, BERKELEY, CA 94703-0618
PO BOX 3619, BERKELEY, CA 94703-0619
PO BOX 3620, BERKELEY, CA 94703-0620
PO BOX 3621, BERKELEY, CA 94703-0621
PO BOX 3622, BERKELEY, CA 94703-0622
PO BOX 3623, BERKELEY, CA 94703-0623
PO BOX 3624, BERKELEY, CA 94703-0624
PO BOX 3625, BERKELEY, CA 94703-0625
PO BOX 3626, BERKELEY, CA 94703-0626
PO BOX 3627, BERKELEY, CA 94703-0627
PO BOX 3628, BERKELEY, CA 94703-0628
PO BOX 3629, BERKELEY, CA 94703-0629
PO BOX 3630, BERKELEY, CA 94703-0630
PO BOX 3631, BERKELEY, CA 94703-0631
PO BOX 3632, BERKELEY, CA 94703-0632
PO BOX 3633, BERKELEY, CA 94703-0633
PO BOX 3634, BERKELEY, CA 94703-0634
PO BOX 3635, BERKELEY, CA 94703-0635
PO BOX 3636, BERKELEY, CA 94703-0636
PO BOX 3637, BERKELEY, CA 94703-0637
PO BOX 3638, BERKELEY, CA 94703-0638
PO BOX 3639, BERKELEY, CA 94703-0639
PO BOX 3640, BERKELEY, CA 94703-0640
PO BOX 3641, BERKELEY, CA 94703-0641
PO BOX 3642, BERKELEY, CA 94703-0642
PO BOX 3643, BERKELEY, CA 94703-0643
PO BOX 3644, BERKELEY, CA 94703-0644
PO BOX 3645, BERKELEY, CA 94703-0645
PO BOX 3646, BERKELEY, CA 94703-0646
PO BOX 3647, BERKELEY, CA 94703-0647
PO BOX 3648, BERKELEY, CA 94703-0648
PO BOX 3649, BERKELEY, CA 94703-0649
PO BOX 3650, BERKELEY, CA 94703-0650
PO BOX 3651, BERKELEY, CA 94703-0651
PO BOX 3652, BERKELEY, CA 94703-0652
PO BOX 3653, BERKELEY, CA 94703-0653
PO BOX 3654, BERKELEY, CA 94703-0654
PO BOX 3655, BERKELEY, CA 94703-0655
PO BOX 3656, BERKELEY, CA 94703-0656
PO BOX 3657, BERKELEY, CA 94703-0657
PO BOX 3658, BERKELEY, CA 94703-0658
PO BOX 3659, BERKELEY, CA 94703-0659
PO BOX 3660, BERKELEY, CA 94703-0660
PO BOX 3661, BERKELEY, CA 94703-0661
PO BOX 3662, BERKELEY, CA 94703-0662
PO BOX 3663, BERKELEY, CA 94703-0663
PO BOX 3664, BERKELEY, CA 94703-0664
PO BOX 3665, BERKELEY, CA 94703-0665
PO BOX 3666, BERKELEY, CA 94703-0666
PO BOX 3667, BERKELEY, CA 94703-0667
PO BOX 3668, BERKELEY, CA 94703-0668
PO BOX 3669, BERKELEY, CA 94703-0669
PO BOX 3670, BERKELEY, CA 94703-0670
PO BOX 3671, BERKELEY, CA 94703-0671
PO BOX 3672, BERKELEY, CA 94703-0672
PO BOX 3673, BERKELEY, CA 94703-0673
PO BOX 3674, BERKELEY, CA 94703-0674
PO BOX 3675, BERKELEY, CA 94703-0675
PO BOX 3676, BERKELEY, CA 94703-0676
PO BOX 3677, BERKELEY, CA 94703-0677
PO BOX 3678, BERKELEY, CA 94703-0678
PO BOX 3679, BERKELEY, CA 94703-0679
PO BOX 3680, BERKELEY, CA 94703-0680
PO BOX 3681, BERKELEY, CA 94703-0681
PO BOX 3682, BERKELEY, CA 94703-0682
PO BOX 3683, BERKELEY, CA 94703-0683
PO BOX 3684, BERKELEY, CA 94703-0684
PO BOX 3685, BERKELEY, CA 94703-0685
PO BOX 3686, BERKELEY, CA 94703-0686
PO BOX 3687, BERKELEY, CA 94703-0687
PO BOX 3688, BERKELEY, CA 94703-0688
PO BOX 3689, BERKELEY, CA 94703-0689
PO BOX 3690, BERKELEY, CA 94703-0690
PO BOX 3691, BERKELEY, CA 94703-0691
PO BOX 3692, BERKELEY, CA 94703-0692
PO BOX 3693, BERKELEY, CA 94703-0693
PO BOX 3694, BERKELEY, CA 94703-0694
PO BOX 3695, BERKELEY, CA 94703-0695
PO BOX 3696, BERKELEY, CA 94703-0696
PO BOX 3697, BERKELEY, CA 94703-0697
PO BOX 3698, BERKELEY, CA 94703-0698
PO BOX 3699, BERKELEY, CA 94703-0699
PO BOX 3700, BERKELEY, CA 94703-0700
PO BOX 3701, BERKELEY, CA 94703-0701
PO BOX 3702, BERKELEY, CA 94703-0702
PO BOX 3703, BERKELEY, CA 94703-0703
PO BOX 3704, BERKELEY, CA 94703-0704
PO BOX 3705, BERKELEY, CA 94703-0705
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