ZIP Code 06504 in New Haven, CT

Data Last Updated: January 1, 2026
City:New Haven, Connecticut
Names to Avoid:
N Haven
Planning Region:South Central Ct Planning Region
Timezone:Eastern (GMT -05:00)
Local Time:10:12:30 PM
Population:No Population Data
Area Codes:203 / 475
Classification:PO Box
Coordinates:41.3036, -72.9349
Quick Link:
https://www.zip-codes.com/zip-code/06504/zip-code-06504.asp

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In the United States, a county equivalent is a political or administrative subdivision of a state. It has a specific geographic area and some level of governmental authority. The term "county" is used in 47 states. Alaska, Louisiana, and Connecticut have functionally equivalent subdivisions called Boroughs, Parishes, and Planning Regions, respectively. They functionally act like counties by subdividing the state. Read More about Connecticut Planning Regions: Connecticut changes from Counties to Planning Regions, including a ZIP Code to Historical County Crosswalk file.

06504 - New Haven, CT

ZIP Code 06504, New Haven

Small Town Unique ZIP No Census Data
LocationSouth Central Ct County, CT
Area0 sq mi Single Point
Delivery Points24 (7 businesses)
PO Boxes17
Also Known AsN Haven
ZIP CreatedBefore Oct 2004
Enclosed InZIP Code 06510
Key Facts
  • This PO Box facility serves a small section of downtown New Haven with just 2 streets in its delivery area.
  • Chapel Street accounts for 19 of the 20 street delivery points, with most addresses containing multiple units.
  • The ZIP code is completely enclosed by the larger 06510 ZIP code, which provides standard street delivery.
  • Seven businesses use this facility for their mailing needs in the Central New Haven district.
  • This is an urban postal facility, not a standalone community—residents have full access to city carrier delivery.
  • The post office maintains 17 PO Boxes for customers who prefer box service over street delivery.

Postal Services

The facility serves seven businesses and handles mail for properties along Chapel Street, where 19 delivery points include units within multi-tenant buildings. This isn't an isolated community requiring PO Boxes by necessity. It's an urban postal facility embedded in Connecticut's second-largest city, positioned in the Central New Haven and Downtown neighborhoods. Street delivery remains available through neighboring carrier routes.

Street Name Patterns

Urban Grid

Just two streets define this compact urban facility, with Chapel Street serving as the primary address corridor in downtown New Haven.

Nearby Areas

Central New Haven Downtown Wooster Square / Mill River Long Wharf Hill

Business & Employment Statistics


ZIP Code 06504 is designated for PO Box delivery only; business establishment and employment data are not available.

# Residential Mailboxes:0Source: USPS
# Business Mailboxes:0Source: USPS
Total Delivery Receptacles:22Source: USPS
Single Family Delivery Units:0Source: USPS
Multi Family Delivery Units:0Source: USPS
# of Businesses:0Source: CBP
1st Quarter Payroll:$0Source: CBP
Annual Payroll:$0Source: CBP
# of Employees:0Source: CBP

Geography, Land Area, & Statistical Classifications


ZIP Code 06504 is located in South Central Ct Planning Region, Connecticut, within the New Haven, CT Metropolitan Statistical Area (CBSA 35300) and Connecticut's 3rd Congressional District. This Metro area has a population of 566,803 people, about 0.00% of whom live in ZIP Code 06504. It covers 0 sq mi of land and a water area of 0 sq mi.

CBSA Name:New Haven, CTSource: Census
CBSA Number:35300Source: Census
CBSA Type:MetroSource: Census
CBSA Division:--Source: Census
CBSA Population:566,803Source: Census
MSA:New York-Northern New Jersey-Long Island, NY-NJ-CT-PASource: Census
Land Area:--Source: Census
Water Area:--Source: Census
Congressional District:03Source: USPS
Congressional Land Area:470.34 sq miSource: Census
PMSA:Waterbury, CT PMSASource: Census
Intro Date:< 2004-10Source: ZIP-Codes.com
Place FIPS Code:0952000Source: Census
Place Name:New Haven city; ConnecticutSource: Census

Adjacent & Nearby ZIP Codes


06505 | | 06503

Schools in ZIP Code 06504


We could not locate which school district 06504 belongs to, but we will update this once new district data is released. There are no public schools nor private schools with a mailing address in this ZIP Code. Listing Nearby schools instead. It also has 6 colleges, universities or post secondary education institutions nearby which would be a short commute to.

St Martin De Porres Academy 208 Columbus Ave
New Haven, CT 06519
District: Private SchoolNearby
Flexschool 97 Whitney Ave
New Haven, CT 65101
District: Private SchoolNearby
Cold Spring School 263 Chapel St
New Haven, CT 06513
District: Private SchoolNearby

Colleges & Post Secondary Schools near ZIP Code 06504


Gateway Community College 20 Church Street
New Haven, CT 06510
Type: Post Secondary
Yale University Woodbridge Hall
New Haven, CT 06520
Type: Post Secondary
University Of New Haven 300 Boston Post Road
West Haven, CT 06516-1916
Type: Post Secondary
Relay Graduate School Of Education - Connecticut 370 James Street 2nd Floor
New Haven, CT 06513-3089
Type: Post Secondary
Relay Graduate School Of Education - Connecticut 370 James Street 2nd Floor
New Haven, CT 06513-3089
Type: Post Secondary
Albertus Magnus College 700 Prospect St
New Haven, CT 06511-1189
Type: Post Secondary

Sources & References


Our sources include trusted federal and licensed data from the United States Postal Service, U.S. Census Bureau, U.S. Geological Survey, Centers for Medicare & Medicaid Services, and the National Center for Education Statistics, along with proprietary datasets created by ZIP-Codes.com. Data last updated on January 1, 2026.

  1. U.S. Postal Service [Last Updated: 1/1/2026], https://www.usps.com
  2. ZIP-Codes.com Proprietary Data Enhancements [Updated: 1/1/2026], https://www.zip-codes.com
  3. U.S. Census [Updated: Varies], https://www.census.gov
    • U.S. Census Office of Management and Budget [Updated: As Released]
    • U.S. Census 2020 Demographic & Housing Characteristics (DHC) [Decennial] [Updated: 5/25/2023]
    • U.S. Census 2011-2024 American Community Survey 5-year estimates (ACS) [Annually] [Updated: Annually, As Released]
    • U.S. Census Business Patterns (CBD) [Annually] [Updated: Annually, As Released]
    • U.S. Census American National Standards Institute (ANSI) [Updated: As Released]
  4. U.S. Geological Survey [Updated: Varies], https://www.usgs.gov
  5. Centers for Medicare & Medicaid Services [Updated: Annually, As Released], https://www.cms.gov
  6. National Center for Education Statistics [Updated: 1/1/2026], https://nces.ed.gov