North Haven ZIP Code Coverage
Official sources support one verified primary postal ZIP for North Haven: 06473. USPS Postal Bulletin 22591 lists “06473 NORTH HAVEN CT,” and the Secretary of the State’s post-office list also identifies North Haven with 06473. The USPS location result identifies North Haven, CT 06473-9994. These records support a postal label, not a townwide boundary claim. No official local source found a second standard ZIP, a PO-box-only ZIP, or a unique ZIP tied to North Haven.
| ZIP Code | Areas Covered | Post Office | Notes |
|---|---|---|---|
| 06473 | North Haven town mailing addresses in the official postal list | North Haven Post Office, 06473-9994 | Postal geography is not a municipal boundary; verify each address |
The narrow row is deliberate. It records the ZIP that can be defended from official sources and leaves unverified spillover, realignment, and neighborhood assignments out of the North Haven ZIP code directory.
The Connecticut State Library town and county guide supplies useful North Haven and New Haven County context for separating municipal geography from postal routing.
That guide helps establish the town-versus-county distinction; it does not publish a ZIP-boundary polygon.
North Haven ZIP Verification
USPS is the right first check when a North Haven address is missing a ZIP or carries an old locality label. Its address route takes a street address, city, state, and ZIP result. Use the complete delivery address, not just the town name. Save the result with the check date because postal data and local records can change. The USPS location page separately identifies the North Haven Post Office result as 06473-9994. That suffix belongs to the post-office listing and is not a second five-digit ZIP.
The official North Haven Post Office result is the direct source for the displayed postal location and ZIP+4 listing.
The post-office result confirms the postal label used for the North Haven mailing key, while an address lookup remains the better test for a specific delivery.
For a second check, compare the result with the USPS ZIP Code Lookup and with the Postal Bulletin entry that lists North Haven, CT 06473.
When an older map or directory disagrees, keep the historical wording, then ask USPS or the North Haven Town Clerk which current address record controls.
Search North Haven by ZIP Code
A ZIP-keyed search is a filter sequence, not a single North Haven resident roll. USPS verifies the mail key. The assessor tests a parcel but has no rendered ZIP field. The civil portal accepts a five-digit ZIP only within property-related case search. The voter system stores ZIP data internally, yet the public lookup is a narrow match tool. Use each result for its stated purpose.
- Run the complete delivery address through USPS and keep the returned five-digit ZIP.
- Use 06473 as a mailing key, not as proof that a parcel sits inside the town line.
- Check the assessor by location, MBL, or Unique Identifier when the goal is parcel context.
- Use the civil Property Address Search for a covered case, with the town and exact five-digit ZIP.
- Use the 2023 Mail-A-Map to confirm street spelling, then move to the North Haven street directory for street-level work.
This order prevents a postal code from doing work that belongs to a parcel card, case docket, voter record, or Town Clerk file.
North Haven Assessor Has No ZIP Field
The North Haven Property Record Cards search can test a postal lead, but it is not ZIP-first. Its Property Search tab offers Property Use, Owner Name, Location, street type, MBL, Unique Identifier, Condominium Complex, and search controls. Blank location searches all locations, while the assessor says an owner search works best with only a last name. Results show street name, number, unit, name, Uniqueid, MBL, use, acres, zone, buildings, and condo complex. The assessor has no rendered ZIP field in the inspected interface.
The assessor search screen is the clearest visual reference for those North Haven parcel filters and result columns.
Use the assessor to connect an address to a parcel, then use USPS to settle the postal code rather than treating an owner or mailing match as occupancy proof.
Its separate Sales Search can narrow sale date, price, acreage, MBL, zone, property location, design, living area, year built, rooms, bedrooms, and baths. Those filters describe assessment and transfer context. They do not create a ZIP-wide resident count.
North Haven Court ZIP Search
The Connecticut Judicial Branch Property Address Search offers the clearest inspected five-digit ZIP filter, but its reach is narrow. It covers property-related cases, including foreclosure, not every person receiving mail in 06473. Online foreclosure cases cover any Judicial District on or after January 1, 2014, and some disposed case types can be removed 30 days after final activity under the July 1, 2024 rule.
The property search screenshot shows the fields that define what a North Haven ZIP search can actually return.
Read a match as a case lead. Record its docket and court location, then verify the party role and disposition with the Judicial Branch or the clerk.
| Search field | Requirement and scope |
|---|---|
| City/Town | Required; at least three characters, with partial text accepted. |
| Street Address | Optional; partial street text is accepted. |
| Zip Code | Optional; full five digits only. |
| Property Type | Residential, Commercial, or All. |
| Case Status | Active, Disposed, or All. |
| Case Type | Select a property-related category, including foreclosure where offered. |
| Search | Runs the address and case filters. |
Older or missing online results need a courthouse terminal or clerk request. North Haven matters can route through the New Haven Judicial District, GA 7 Meriden, or the East Haven–North Haven Probate Court, so the court location is part of the verification.
North Haven ZIPs Versus Town Limits
North Haven’s postal and civic lines answer different questions. A ZIP routes mail. The assessor and MapGeo locate parcels. The civil portal screens covered cases. The state town-and-county guide, the Plan of Conservation and Development, and the official 1868 map describe civic or historical geography, not postal polygons. Research located no official USPS spillover list, boundary polygon, ZIP split or realignment year, or address-by-address mismatch list. Do not infer that every 06473 address is inside North Haven or that every physical parcel must use it without a USPS check.
- ZIP
- A five-digit USPS code used to route mail to a delivery area, not a city line or legal parcel line.
- ZIP+4
- A four-digit extension that refines delivery within a five-digit ZIP; it is not a separate municipal ZIP.
- PO-box ZIP
- A code used for a group of post-office boxes; no North Haven-only PO-box ZIP was verified.
- Unique ZIP
- A code assigned to one organization or facility; none tied to North Haven was located.
- Carrier route
- A USPS delivery path within a ZIP that can refine mail work but does not set a town border.
The distinctions matter when a North Haven search mixes mail, parcel, court, and historical records. A postal match narrows delivery routing; it does not prove ownership, occupancy, or a legal boundary.
North Haven Streets and ZIP Context
Postal matching gets harder when a historical directory and a modern address use different locality wording. The North Haven Historical Society names early roads Washington Avenue and Pool Road, a bridge near Broadway and State, and later streets including Quinnipiac Avenue, Blue Hills Road, Sackett Point, Blakeslee Avenue, and Clintonville Road. Northeast Village, Clintonville, and Pines Bridge are historical place names, not verified ZIP subdivisions.
The town-linked 2023 Mail-A-Map supplies a street index and route context. It is useful for spelling and cross-street checks, but it is not a postal-boundary map. The state’s 1868 North Haven map is a historical comparison.
A 1901 or 1930 directory may group North Haven under New Haven regional coverage. Keep that original locality label for research, then run the current delivery address through USPS before joining it to a modern ZIP code directory.
North Haven Voter ZIP Limits
The Connecticut Secretary of the State voter lookup is not a general ZIP code directory. The centralized voter system includes city, state, and ZIP internally, along with precinct, active or inactive status, registration, and voter-history fields. Public display is narrower. After the 2026 change, the public birth field is birth year only; month and day are exempt. Protected voters may have address fields withheld, and an inactive or variant match is not proof of ownership or occupancy.
North Haven Registrars of Voters are reached through Town Hall at extension 640. The full CSV voter-file request is a separate $300 process with an attestation and permitted election-related, scholarly, journalistic, political, or governmental purposes. A failed public lookup should go to the official registrar or state instructions, not to an unverified ZIP list. FOI can help with non-exempt agency records, but it does not override voter privacy limits.
North Haven ZIP Code Unknowns
The defensible North Haven ZIP code directory has one primary ZIP, 06473, and one official post-office display, 06473-9994. Research did not locate a published per-ZIP population, voter count, spillover roster, town-line mismatch list, ZIP split, realignment year, or North Haven-only unique or PO-box ZIP. Those gaps are limits of the source set, not evidence that a second ZIP exists or that every address fits one simple line.
When records disagree, use the complete address in USPS first. Use the North Haven assessor or MapGeo for parcel location, the civil portal only for its covered case types, and the Town Clerk or local post office for an older map or locality question. The result is a clean postal key that leaves resident identity, parcel ownership, and historical household questions to the records that actually hold them.
Note: A ZIP match narrows mail routing, but only the relevant custodian can confirm the record, parcel, or protected status behind it.