New Haven County, CT ZIP codes
There are 78 ZIP codes in New Haven County, CT, in 27 towns, from 06401 to 06770. The largest are 06516 (West Haven), 06492 (Wallingford) and 06511 (New Haven).
Connecticut abolished county government in 1960, and since 2022 the Census Bureau counts nine planning regions instead of its eight counties. New Haven County has no government of its own, but the counties are still how Connecticut's towns and ZIP codes are placed. Its ZIP codes lie in the South Central Connecticut and Naugatuck Valley planning regions.
- ZIP codes
- 78
- Towns
- 27
- County FIPS
09009- State
- Connecticut
- Population
- 867,469
- Land area
- 604 sq mi
Land area from the Census Bureau's 2020 Gazetteer, the last to list New Haven County. Population is the sum of the ZIP codes listed here (American Community Survey 2020–2024), since the Bureau now counts Connecticut by planning region.
New Haven County ZIP codes by town
- New Haven
- 06501, 06502, 06503, 06504, 06505, 06506, 06507, 06508, 06509, 06510, 06511, 06512, 06513, 06515, 06519, 06520, 06521, 06525, 06530, 06531, 06532, 06533, 06534, 06535, 06536, 06537, 06538, 06540
Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.
Map of New Haven County ZIP codes
The ZIP codes of New Haven County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.
New Haven County in numbers
About 867,469 people live in New Haven County, in 347,776 households, the 3rd most populous of Connecticut's 8 counties.
| Population | 867,469 |
|---|---|
| Households | 347,776 |
| Population density | 1,435 / sq mi |
U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, summed over the 78 ZIP codes listed here, as the Bureau no longer publishes figures for New Haven County; medians do not add up and are left out. Survey estimates carry margins of error, wider for small places. Sources and methods.
Largest towns in New Haven County
| Town | ZIP codes | Population |
|---|---|---|
| New Haven | 28 | 134,349 |
| Waterbury | 16 | 114,869 |
| Hamden | 3 | 61,150 |
| Meriden | 2 | 60,545 |
| West Haven | 1 | 55,351 |
| Milford | 2 | 51,023 |
| Wallingford | 4 | 44,498 |
| Naugatuck | 1 | 31,800 |
| Cheshire | 3 | 28,904 |
| Branford | 1 | 28,217 |
| North Haven | 1 | 24,336 |
| Guilford | 1 | 22,067 |
| Southbury | 1 | 20,071 |
| Ansonia | 1 | 19,033 |
| Madison | 1 | 17,657 |
Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.
Neighbouring counties
Counties that share a ZIP code with New Haven County.
Not sure you are in New Haven County? What county am I in? answers from your location, near a county line included.
Every ZIP code in New Haven County, with figures
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
06401 | Ansonia , CT | Standard | 19,315 | $86,178 | $285,800 |
06403 | Beacon Falls , CT | Standard | 6,147 | $101,516 | $350,300 |
06405 | Branford , CT | Standard | 28,217 | $105,225 | $401,200 |
06408 | Cheshire , CT | No street area | — | — | — |
06410 | Cheshire , CT | Standard | 28,904 | $145,179 | $438,900 |
06411 | Cheshire , CT | No street area | — | — | — |
06418 | Derby , CT | Standard | 12,205 | $78,542 | $258,500 |
06437 | Guilford , CT | Standard | 22,067 | $137,615 | $515,000 |
06443 | Madison , CT | Standard | 17,657 | $168,462 | $584,900 |
06450 | Meriden , CT | Standard | 35,694 | $71,250 | $242,600 |
06451 | Meriden , CT | Standard | 24,851 | $71,255 | $239,800 |
06460 | Milford , CT | Standard | 37,649 | $104,360 | $412,600 |
06461 | Milford , CT | Standard | 15,035 | $133,221 | $424,700 |
06471 | North Branford , CT | Standard | 7,140 | $109,388 | $371,200 |
06472 | Northford , CT | Standard | 6,363 | $105,729 | $405,200 |
06473 | North Haven , CT | Standard | 24,743 | $132,829 | $391,200 |
06477 | Orange , CT | Standard | 14,315 | $142,325 | $491,500 |
06478 | Oxford , CT | Standard | 12,991 | $128,953 | $472,400 |
06483 | Seymour , CT | Standard | 16,889 | $107,708 | $370,000 |
06487 | South Britain , CT | No street area | — | — | — |
06488 | Southbury , CT | Standard | 20,071 | $112,887 | $411,600 |
06492 | Wallingford , CT | Standard | 44,498 | $105,061 | $353,600 |
06493 | Wallingford , CT | No street area | — | — | — |
06494 | Wallingford , CT | No street area | — | — | — |
06495 | Wallingford , CT | No street area | — | — | — |
06501 | New Haven , CT | No street area | — | — | — |
06502 | New Haven , CT | No street area | — | — | — |
06503 | New Haven , CT | No street area | — | — | — |
06504 | New Haven , CT | No street area | — | — | — |
06505 | New Haven , CT | No street area | — | — | — |
06506 | New Haven , CT | No street area | — | — | — |
06507 | New Haven , CT | No street area | — | — | — |
06508 | New Haven , CT | No street area | — | — | — |
06509 | New Haven , CT | No street area | — | — | — |
06510 | New Haven , CT | Standard | 4,584 | $58,913 | $651,800 |
06511 | New Haven , CT | Standard | 54,730 | $59,969 | $353,000 |
06512 | New Haven , CT | Standard | 28,830 | $96,146 | $289,100 |
06513 | New Haven , CT | Standard | 38,888 | $48,500 | $235,500 |
06514 | Hamden , CT | Standard | 26,803 | $88,900 | $270,800 |
06515 | New Haven , CT | Standard | 19,006 | $73,709 | $328,900 |
06516 | West Haven , CT | Standard | 55,351 | $74,382 | $291,700 |
06517 | Hamden , CT | Standard | 14,221 | $104,550 | $339,400 |
06518 | Hamden , CT | Standard | 20,126 | $106,692 | $325,300 |
06519 | New Haven , CT | Standard | 15,605 | $49,619 | $316,700 |
06520 | New Haven , CT | No street area | — | — | — |
06521 | New Haven , CT | No street area | — | — | — |
06524 | Bethany , CT | Standard | 5,288 | $166,236 | $418,000 |
06525 | New Haven , CT | Standard | 9,073 | $188,750 | $588,100 |
06530 | New Haven , CT | No street area | — | — | — |
06531 | New Haven , CT | No street area | — | — | — |
06532 | New Haven , CT | No street area | — | — | — |
06533 | New Haven , CT | No street area | — | — | — |
06534 | New Haven , CT | No street area | — | — | — |
06535 | New Haven , CT | No street area | — | — | — |
06536 | New Haven , CT | No street area | — | — | — |
06537 | New Haven , CT | No street area | — | — | — |
06538 | New Haven , CT | No street area | — | — | — |
06540 | New Haven , CT | No street area | — | — | — |
06701 | Waterbury , CT | No street area | — | — | — |
06702 | Waterbury , CT | Standard | 2,946 | $14,474 | $286,100 |
06703 | Waterbury , CT | No street area | — | — | — |
06704 | Waterbury , CT | Standard | 31,713 | $48,718 | $192,000 |
06705 | Waterbury , CT | Standard | 25,266 | $53,954 | $202,400 |
06706 | Waterbury , CT | Standard | 15,551 | $52,242 | $210,700 |
06708 | Waterbury , CT | Standard | 29,594 | $67,364 | $218,500 |
06710 | Waterbury , CT | Standard | 9,942 | $37,191 | $228,300 |
06712 | Prospect , CT | Standard | 9,458 | $126,394 | $355,400 |
06716 | Wolcott , CT | Standard | 16,113 | $111,225 | $325,300 |
06720 | Waterbury , CT | No street area | — | — | — |
06721 | Waterbury , CT | No street area | — | — | — |
06722 | Waterbury , CT | No street area | — | — | — |
06723 | Waterbury , CT | No street area | — | — | — |
06724 | Waterbury , CT | No street area | — | — | — |
06725 | Waterbury , CT | No street area | — | — | — |
06726 | Waterbury , CT | No street area | — | — | — |
06749 | Waterbury , CT | No street area | — | — | — |
06762 | Middlebury , CT | Standard | 7,807 | $133,487 | $476,400 |
06770 | Naugatuck , CT | Standard | 31,823 | $96,208 | $259,000 |
Cite this page
zipcodes.pro. “New Haven County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/ct/county/new-haven
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