First three digits · Florida
ZIP Codes Starting with
45 ZIP codes start with 346, sorted at the Tampa, FL (SCF 335) sectional center (USPS labeling list L005, effective October 1, 2026) in Florida: 33 residential ZIP codes across 3 counties and 12 PO Box or single-organization codes (Census 2020 ZCTAs and GeoNames postal codes, October 2026).
What do the digits 346 mean?
The first digit, 3, is one of ten national areas (Alabama, Florida, Georgia, Mississippi, Tennessee and Armed Forces Americas). The first three, 346, route mail to a sectional center: USPS labeling list L005 (effective October 1, 2026) sends letters for 346 to the Tampa, FL (SCF 335) facility. The last two digits pick the delivery area. By residents, the largest town names among the 346 ZIP codes are Spring Hill, New Port Richey, Land O Lakes, Brooksville, Palm Harbor and Port Richey.
The same facility sorts 3 prefixes, 162 ZIP codes in all: 335, 336, 346.
Where are the 346 ZIP codes?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
All ZIP codes starting with 346
| County | ||||||
|---|---|---|---|---|---|---|
| 34601 | Brooksville | Hernando County | 24,115 | 212 | $60k | $188k |
| 34602 | Brooksville | Hernando County | 11,088 | 166 | $77k | $276k |
| 34603 | Brooksville | Hernando County | PO Box or unique | – | – | – |
| 34604 | Brooksville | Hernando County | 13,642 | 375 | $85k | $306k |
| 34605 | Brooksville | Hernando County | PO Box or unique | – | – | – |
| 34606 | Spring Hill | Hernando County | 28,668 | 2,478 | $57k | $251k |
| 34607 | Spring Hill | Hernando County | 9,496 | 149 | $66k | $399k |
| 34608 | Spring Hill | Hernando County | 36,658 | 2,406 | $64k | $277k |
| 34609 | Spring Hill | Hernando County | 47,257 | 2,130 | $79k | $317k |
| 34610 | Spring Hill | Pasco County | 16,995 | 250 | $77k | $268k |
| 34611 | Spring Hill | Hernando County | PO Box or unique | – | – | – |
| 34613 | Brooksville | Hernando County | 19,337 | 520 | $59k | $210k |
| 34614 | Brooksville | Hernando County | 10,935 | 199 | $84k | $322k |
| 34636 | Istachatta | Hernando County | PO Box or unique | – | – | – |
| 34637 | Land O Lakes | Pasco County | 13,049 | 883 | $115k | $434k |
| 34638 | Land O Lakes | Pasco County | 37,644 | 813 | $124k | $434k |
| 34639 | Land O Lakes | Pasco County | 30,831 | 1,139 | $102k | $384k |
| 34652 | New Port Richey | Pasco County | 27,444 | 3,196 | $57k | $223k |
| 34653 | New Port Richey | Pasco County | 35,945 | 3,285 | $50k | $203k |
| 34654 | New Port Richey | Pasco County | 24,355 | 962 | $74k | $307k |
| 34655 | New Port Richey | Pasco County | 49,964 | 1,852 | $86k | $380k |
| 34656 | New Port Richey | Pasco County | PO Box or unique | – | – | – |
| 34660 | Ozona | Pinellas County | PO Box or unique | – | – | – |
| 34661 | Nobleton | Hernando County | 386 | 43 | – | $145k |
| 34667 | Hudson | Pasco County | 30,689 | 1,005 | $51k | $234k |
| 34668 | Port Richey | Pasco County | 49,442 | 3,187 | $47k | $192k |
| 34669 | Hudson | Pasco County | 14,618 | 780 | $59k | $247k |
| 34673 | Port Richey | Pasco County | PO Box or unique | – | – | – |
| 34674 | Hudson | Pasco County | PO Box or unique | – | – | – |
| 34677 | Oldsmar | Pinellas County | 22,762 | 1,802 | $94k | $387k |
| 34679 | Aripeka | Pasco County | 141 | 68 | – | – |
| 34680 | Elfers | Pasco County | PO Box or unique | – | – | – |
| 34681 | Crystal Beach | Pinellas County | 1,284 | 1,771 | – | $729k |
| 34682 | Palm Harbor | Pinellas County | PO Box or unique | – | – | – |
| 34683 | Palm Harbor | Pinellas County | 33,911 | 3,296 | $93k | $452k |
| 34684 | Palm Harbor | Pinellas County | 27,029 | 4,013 | $72k | $342k |
| 34685 | Palm Harbor | Pinellas County | 18,132 | 1,801 | $95k | $518k |
| 34688 | Tarpon Springs | Pinellas County | 8,522 | 538 | $112k | $510k |
| 34689 | Tarpon Springs | Pinellas County | 27,324 | 2,590 | $75k | $337k |
| 34690 | Holiday | Pasco County | 12,498 | 3,646 | $49k | $177k |
| 34691 | Holiday | Pasco County | 21,232 | 2,727 | $50k | $203k |
| 34692 | Holiday | Pasco County | PO Box or unique | – | – | – |
| 34695 | Safety Harbor | Pinellas County | 18,098 | 3,242 | $95k | $439k |
| 34697 | Dunedin | Pinellas County | PO Box or unique | – | – | – |
| 34698 | Dunedin | Pinellas County | 38,171 | 3,414 | $74k | $392k |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; GeoNames postal codes (CC BY 4.0) for codes without a residential area.