County ZIP codes · Connecticut · FIPS 09009
New Haven County, CT ZIP Codes
New Haven County, Connecticut has 78 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 41 residential and 37 for PO boxes or a single organization. Median household income ranges from $48,500 in 06513 (New Haven) to $188,750 in 06525 (Woodbridge) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of New Haven County?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
How different are its ZIP codes?
The middle half of its ranked ZIP codes (1,000+ people living in households) report median household incomes between $73,709 and $128,953.
They carry 28 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 41 residential ZIP codes in New Haven County
| In this county | ||||||
|---|---|---|---|---|---|---|
| 06516 | West Haven | 55,351 | 5,149 | $74k | $292k | 100% |
| 06511 | New Haven | 54,730 | 9,415 | $60k | $353k | 100% |
| 06492 | Wallingford | 44,498 | 1,119 | $105k | $354k | 100% |
| 06513 | New Haven | 38,888 | 5,385 | $49k | $236k | 100% |
| 06460 | Milford | 37,649 | 3,029 | $104k | $413k | 100% |
| 06450 | Meriden | 35,694 | 2,564 | $71k | $243k | 100% |
| 06770 | Naugatuck | 31,823 | 1,938 | $96k | $259k | 100% |
| 06704 | Waterbury | 31,713 | 3,924 | $49k | $192k | 100% |
| 06708 | Waterbury | 29,594 | 3,132 | $67k | $219k | 100% |
| 06410 | Cheshire | 28,904 | 896 | $145k | $439k | 100% |
| 06512 | East Haven | 28,830 | 2,732 | $96k | $289k | 100% |
| 06405 | Branford | 28,217 | 1,305 | $105k | $401k | 100% |
| 06514 | Hamden | 26,803 | 2,412 | $89k | $271k | 100% |
| 06705 | Waterbury | 25,266 | 4,447 | $54k | $202k | 100% |
| 06451 | Meriden | 24,851 | 2,529 | $71k | $240k | 100% |
| 06473 | North Haven | 24,743 | 1,143 | $133k | $391k | 100% |
| 06437 | Guilford | 22,067 | 468 | $138k | $515k | 100% |
| 06518 | Hamden | 20,126 | 1,220 | $107k | $325k | 100% |
| 06488 | Southbury | 20,071 | 514 | $113k | $412k | 100% |
| 06401 | Ansonia | 19,315 | 3,205 | $86k | $286k | 100% |
| 06515 | New Haven | 19,006 | 4,170 | $74k | $329k | 100% |
| 06443 | Madison | 17,657 | 488 | $169k | $585k | 100% |
| 06483 | Seymour | 16,889 | 1,163 | $108k | $370k | 100% |
| 06716 | Wolcott | 16,113 | 797 | $111k | $325k | 100% |
| 06519 | New Haven | 15,605 | 8,821 | $50k | $317k | 100% |
| 06706 | Waterbury | 15,551 | 4,073 | $52k | $211k | 100% |
| 06461 | Milford | 15,035 | 1,546 | $133k | $425k | 100% |
| 06477 | Orange | 14,315 | 833 | $142k | $492k | 100% |
| 06517 | Hamden | 14,221 | 2,842 | $105k | $339k | 100% |
| 06478 | Oxford | 12,991 | 397 | $129k | $472k | 100% |
| 06418 | Derby | 12,205 | 2,418 | $79k | $259k | 100% |
| 06710 | Waterbury | 9,942 | 10,260 | $37k | $228k | 100% |
| 06712 | Prospect | 9,458 | 665 | $126k | $355k | 100% |
| 06525 | Woodbridge | 9,073 | 482 | $189k | $588k | 100% |
| 06762 | Middlebury | 7,807 | 440 | $134k | $476k | 100% |
| 06471 | North Branford | 7,140 | 805 | $109k | $371k | 100% |
| 06472 | Northford | 6,363 | 396 | $106k | $405k | 100% |
| 06403 | Beacon Falls | 6,147 | 636 | $102k | $350k | 100% |
| 06524 | Bethany | 5,288 | 251 | $166k | $418k | 100% |
| 06510 | New Haven | 4,584 | 17,041 | $59k | $652k | 100% |
| 06702 | Waterbury | 2,946 | 4,404 | $15k | $286k | 100% |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by residents (simplemaps county weights; Connecticut keeps its historical counties).
PO Box and single-organization ZIP codes
| ZIP | Postal name |
|---|---|
| 06408 | Cheshire |
| 06411 | Cheshire |
| 06487 | South Britain |
| 06493 | Wallingford |
| 06494 | Wallingford |
| 06495 | Wallingford |
| 06501 | New Haven |
| 06502 | New Haven |
| 06503 | New Haven |
| 06504 | New Haven |
| 06505 | New Haven |
| 06506 | New Haven |
| 06507 | New Haven |
| 06508 | New Haven |
| 06509 | New Haven |
| 06520 | New Haven |
| 06521 | New Haven |
| 06530 | New Haven |
| 06531 | New Haven |
| 06532 | New Haven |
| 06533 | New Haven |
| 06534 | New Haven |
| 06535 | New Haven |
| 06536 | New Haven |
| 06537 | New Haven |
| 06538 | New Haven |
| 06540 | New Haven |
| 06701 | Waterbury |
| 06703 | Waterbury |
| 06720 | Waterbury |
| 06721 | Waterbury |
| 06722 | Waterbury |
| 06723 | Waterbury |
| 06724 | Waterbury |
| 06725 | Waterbury |
| 06726 | Waterbury |
| 06749 | Waterbury |
Source: GeoNames postal codes (CC BY 4.0).
Which first three digits do New Haven County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. New Haven County's ZIP codes use 3 prefixes: 064, 065 and 067.
| Prefix | Sectional center | Here | All codes |
|---|---|---|---|
| 064 | Hartford, CT (SCF 060) | 25 | 64 |
| 065 | Hartford, CT (SCF 060) | 33 | 33 |
| 067 | Hartford, CT (SCF 060) | 20 | 50 |
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.