Berwyn ZIP Code Coverage
Berwyn city sources, the local post office, and county address data consistently use 60402. It is the city's main postal identifier, but the Census Bureau's 60402 ZIP Code Tabulation Area, or ZCTA, is a statistical shape rather than Berwyn's legal line. The city itself covers 3.90 square miles. Treat the ZIP as a postal search bucket and use the Cook County municipality field when city jurisdiction matters.
| ZIP Code | Areas Covered | Post Office | Notes |
|---|---|---|---|
| 60402 | Berwyn and postal territory associated with the name | Berwyn Post Office | ZCTA is larger than the 3.90-square-mile city |
No second standard, PO-box-only, or unique ZIP for Berwyn was documented in the official sources reviewed. That matters: the directory should not manufacture extra codes from nearby towns. Confirm a particular delivery point through USPS because the city name printed on mail and the municipal government responsible for the parcel can diverge at postal edges.
Berwyn's 60402 Post Office
The official USPS location page places the Berwyn Post Office at 6625 Cermak Road, Berwyn, IL 60402-9998. The extended code on the station address does not create a separate citywide ZIP. It is the station's full postal address.
This postal record confirms the local office and standard code. Use address-level lookup for a home, unit, or business rather than assuming that every 60402 mailing point sits within the city line.
Verify a Berwyn ZIP Address
The USPS ZIP Code Lookup is the direct route from a street address to its postal code. Enter the complete address, city, and state. Automated research captured the form but not a live Berwyn result, so no address-level outcome should be invented.
The result answers a delivery question. It does not identify a resident, owner, ward, school district, or municipality. Carry the verified address into a county system for those questions.
| Lookup field | Use |
|---|---|
| Street address | Identifies the delivery point, including number and street. |
| Unit | Separates apartments or suites when USPS recognizes them. |
| City and state | Supplies the postal place context for the query. |
| Returned ZIP+4 | Narrows delivery more than the five-digit ZIP. |
Find Berwyn Records by ZIP
Official portals use ZIP in different ways. The Cook County Treasurer property search makes ZIP optional while City is required. Illinois voter lookup requires a five-digit ZIP before the street fields update. IDFPR license search offers ZIP plus city, state, and county, while Illinois I-CASH accepts city and ZIP with a required last or business name. None provides an unrestricted list of everyone in 60402.
- Verify the full address through USPS. Save the standardized street, unit, city, and ZIP+4 if returned.
- Open CookViewer and search the address. Confirm that the parcel's municipality field says Berwyn.
- Use the Treasurer's address form with City set to Berwyn and ZIP when needed. Keep tax-mail data apart from occupancy.
- For a known voter, enter the required name, date of birth, ZIP, street number, and street name in the state confirmation form.
Once a ZIP is narrowed to a named road, the Berwyn street directory explains the address and parcel workflow in full. Do not try to turn the broad postal zone into a block-level resident list.
Map 60402 in CookViewer
CookViewer searches by address, PIN, or intersection and reports parcel geography. Its detail panels can show municipality, township, zoning, tax class, land size, neighborhood, values, building facts, and links to other county records. The county address-point layer also carries ZIP, municipality, MSAG community, placement, source, and edit fields.
The captured interface reflects the May 28, 2026 redesign. It provides All, Parcel, PIN, and Address Locator tabs plus select, compare, print, and export tools.
For a postal-edge question, the municipality field is more useful than the ZIP alone. Parcel and address-point data can also expose conflicting source values that need correction by the responsible agency.
Berwyn Tax Search Fields
The Cook County Treasurer's property search is the strongest tax-side form with an explicit ZIP input. City is required, while ZIP is optional. The form also accepts house number, street name, and unit. A PIN route is available when the parcel number is known.
| Field | Required | How it narrows 60402 |
|---|---|---|
| House number | Address route | Finds the delivery location on a street. |
| Street and unit | Address route | Separates similar addresses and multi-unit sites. |
| City | Yes | Set to Berwyn to avoid relying on ZIP alone. |
| ZIP | No | Adds postal context when the city and street are known. |
| PIN | PIN route | Targets one tax parcel without a postal assumption. |
A tax-bill result can distinguish situs from mailing address. That distinction prevents a mailing destination from being mislabeled as where a taxpayer or owner lives.
Use 60402 With a Name
ZIP filters become more reliable when paired with a known name and a record purpose. Illinois voter lookup takes first and last name, birth date, five-digit ZIP, street number, and street name. It confirms a registration, not a ZIP-wide roster. Sensitive voter fields remain protected, and state law restricts copying and use.
The IDFPR License Lookup combines first and last name with city, state, county, ZIP, license type, and license status. Select Illinois to enable Cook County. A result identifies a credential record and its listed place field, not household membership. Illinois I-CASH also takes city and ZIP, but a match is only an unclaimed-property lead that must be proven through the state's claim process.
Note: Always preserve the role label, because a voter, licensee, claimant, and parcel taxpayer can each have a different link to 60402.
Berwyn Names Before ZIP Codes
ZIP codes are modern postal tools. They should not be forced onto sources created before the system existed. Historical Berwyn research may encounter LaVergne, Swedetown, or separate north and south community labels, along with street names that changed around the city's 1901 union. A directory, deed, newspaper, map, or census entry may be correctly indexed under an older place name.
Search the historical place and street form first, then connect it to a current parcel with maps and legal descriptions. The Berwyn Public Library and Historical Society can help with local names that a current postal form will not recognize. This is especially important for family research across the early twentieth century.
Berwyn Postal and Data Addresses
Cook County's address-point service contains more than mailing text. Its fields include parsed address parts, ZIP, PIN, municipality, MSAG community, emergency-service number, placement, data source, edit dates, and anomaly flags. MSAG means Master Street Address Guide, a public-safety addressing reference. These fields can explain why a valid postal address appears differently in a county data system.
No official source identified one Berwyn office as the sole E911 or MSAG authority, so address corrections should start with the agency whose record is wrong. USPS handles delivery form. Cook County GIS handles county address-point data. The Assessor, Treasurer, Clerk, and city maintain their own record fields.
Berwyn ZIP and City Limits
The 60402 ZCTA is larger than Berwyn's 3.90-square-mile incorporated footprint. ZCTAs are Census Bureau approximations built from census blocks to represent ZIP patterns. They are useful for statistics, but they are not USPS delivery boundaries and do not define municipal power. A map or dataset labeled 60402 can therefore include territory beyond the city.
Use three checks for an edge address: USPS for delivery, CookViewer or county address points for municipality, and the relevant city or county office for jurisdiction. This prevents the ZIP code directory from assigning a person, parcel, permit, or voting district to Berwyn merely because 60402 appears in a result.
- ZIP vs ZIP+4
- A five-digit ZIP names a broad delivery area. ZIP+4 narrows mail to a smaller segment, building, or group of boxes.
- PO-box ZIP
- A code assigned chiefly to post-office boxes. No separate Berwyn example was documented.
- Unique ZIP
- A code assigned to one high-volume organization. No Berwyn unique code was found.
- Carrier route
- A postal delivery path within a ZIP. It is not a city boundary or public resident roll.
Boundary check. Never treat a 60402 match alone as proof that an address or person is inside Berwyn.