Pleasant Hill ZIP Code Directory Coverage
Research identifies 94523 as the principal postal ZIP serving incorporated Pleasant Hill. Postal territory can reach beyond the incorporated line, so a delivery label does not settle city jurisdiction. Nearby ZIP codes belong to neighboring postal areas even when they are close to the city, the college, or the BART station. The table keeps the verified city-serving ZIP separate from nearby codes that need address-level checking.
| ZIP | Areas Covered | Post Office | Notes |
|---|---|---|---|
| 94523 | Pleasant Hill city plus postal territory described in county sources as Concord/Pleasant Hill | Pleasant Hill Post Office | Principal and only verified city-serving ZIP; boundary differs from the city line |
| 94597 | Walnut Creek and Contra Costa Centre near Pleasant Hill BART | Walnut Creek stations | Nearby postal area, not a Pleasant Hill city ZIP |
| 94520, 94518, 94521 | Nearby Concord postal areas | Concord stations | May be close to the city; verify each address before assigning city records |
The row for 94523 is the safe starting point, not permission to treat every address with that label as a city parcel. A complete street address still needs USPS confirmation and a county or city jurisdiction check. ZIP 94597 is especially easy to misread because “Pleasant Hill BART” is a familiar place name while the station sits in the Contra Costa Centre and Walnut Creek postal geography.
Note: A ZIP row narrows delivery geography, but it does not identify a parcel owner or household.
Pleasant Hill ZIP 94523 Mail
The Pleasant Hill Post Office listing gives the local delivery reference as 1945 Contra Costa Boulevard, Pleasant Hill, California 94523-9991, with telephone number (925) 687-0533. The hours shown in the research capture are Monday through Friday, 9 a.m. to 5 p.m., and Saturday, 10 a.m. to 2 p.m. Hours can change, so confirm them directly before making a trip or sending a time-sensitive request.
A post office is useful for verifying a mailing label. It does not provide a resident roll, a parcel-owner list, or a city-limit decision. USPS validates the delivery address and ZIP code. The Assessor, CCMAP, City Hall, and the appropriate county custodian answer different questions about land, permits, districts, and official records.
The USPS Pleasant Hill Post Office details are shown here as a direct check on the 94523 postal reference.
The image ties the main postal row to the listed station and telephone. Direct verification remains important because retail hours and counter services are not permanent.
Pleasant Hill ZIP 94597 Trap
Place names can travel farther than postal boundaries. Pleasant Hill BART is associated with the Pleasant Hill name, but the station is in the Contra Costa Centre and commonly uses Walnut Creek 94597. A person who says “near Pleasant Hill BART” may therefore have a Walnut Creek mailing address, a Contra Costa County parcel, a different city district, and no 94523 address at all.
A postal directory should keep those layers separate. First record the exact street address and the USPS result. Next use the county parcel viewer to see the parcel and available geographic layers. Then use Pleasant Hill's official address-to-City-Council-district lookup when the question is whether an address is inside the incorporated city. The five-district map adopted July 17, 2023 is a civic boundary check, not a postal map.
The distinction matters for public records. City permits, local licenses, and code requests belong to the city when the parcel is inside Pleasant Hill. County assessment, deed, tax, and court records follow their own custodians. A nearby 94597 address can still have a Pleasant Hill connection without being a Pleasant Hill city address.
Search Within a Pleasant Hill ZIP
A postal code is best used as a narrowing clue, not as a promised person filter. The public Contra Costa property tools accept a street address or APN, not an owner-name or ZIP-wide owner browse. CCMAP can show parcel geometry, adjacent polygons, aerials, contours, radius selection, and available layers, but it does not publish owner names. California's voter-status form returns information to the individual who supplies identifying data rather than opening a ZIP roster.
- Run the complete address through the USPS address-to-ZIP lookup and save the mailing city and ZIP result.
- Use the Assessor's ParcelQuest Lite entry point with the street address or APN, then note the parcel facts without treating a blank owner field as a missing owner.
- Open CCMAP, select the parcel, and inspect the map, boundary, district, and available ZIP or geographic layers for context.
- Use Pleasant Hill's address-to-district lookup when the question concerns the incorporated city or the five-district council map.
- For street-level work after the ZIP is confirmed, move to the Pleasant Hill street directory and its address-keyed record chain.
This workflow separates delivery validation from record access. It also avoids a common error: asking a county parcel tool to return a ZIP-wide list of owners when its documented public keys are only APN and street address.
The USPS ZIP Code Lookup by address is the direct postal check used before a parcel or district comparison.
The address lookup image shows the postal starting point. It confirms mailing geography, then hands the parcel and city questions to CCMAP and the local district tool.
Pleasant Hill ZIP Search Fields
The research supports only a small set of postal or ZIP-adjacent fields. A postal directory should not promise fields that the named source does not document. USPS begins with a full address. ParcelQuest and CCMAP identify land by address or APN. The state voter tool identifies a person through matching data and is not a ZIP search.
| Source | Documented search key | What it returns | ZIP role |
|---|---|---|---|
| USPS address lookup | Complete street address | Mailing city and ZIP validation | Direct postal check |
| ParcelQuest Lite | APN or street address | Parcel map, assessed value, and building or lot facts | Address context; no ZIP-wide owner browse |
| CCMAP | Address or APN, map click, radius, layers | Parcel geometry, adjacent parcels, aerials, contours, and available map context | Visual geography; no online owner names |
| California voter status | First name, last name, date of birth, and California ID or SSN last four | Personal status, location, party or guide preferences, and election details | No ZIP-wide public voter browse |
The voter row is included to show a limit. A ZIP code may appear as context in a person's status record, but the documented form is not a way to enumerate residents. The full voter file is restricted to approved purposes under California Elections Code section 2194 and related rules.
Note: The documented postal field is a complete address, not a public ZIP-wide resident name search.
Pleasant Hill ZIP Address Identities
Three address terms keep a ZIP code lookup from drifting into the wrong record. The ZIP is a delivery label. The situs is the physical parcel location used by the tax roll. The mailing address is where an owner receives tax correspondence, which can be outside the parcel or city. The legal description is the durable lot, block, subdivision, or metes-and-bounds language used by a deed.
- ZIP versus city limit
- A postal label routes mail through postal geography. A city limit marks incorporated jurisdiction. The two can overlap without matching.
- ZIP+4
- An added four digits narrow delivery within a five-digit ZIP. They do not create a new city boundary.
- PO-box ZIP
- A postal code used for boxes or a special delivery group. It may not describe the physical location of a home or parcel.
- Unique ZIP
- A code assigned to one institution or concentrated delivery point. No unique ZIP was verified for Pleasant Hill in the research.
- Carrier route
- A delivery route inside postal operations. It is not a public household directory or a parcel ownership class.
ZIP versus city. Use USPS for delivery, CCMAP for parcel geography, and the Pleasant Hill district lookup for the incorporated-city question. No single label answers all three.
Pleasant Hill ZIP Parcel Limits
ParcelQuest Lite is useful because it accepts a street address or APN. Its public parcel information can include assessed value, building square footage, lot size, map geometry, and related property facts. Contra Costa deliberately withholds owner names from the public web parcel tools rather than maintaining a selective suppression list for protected officials. Owner and mailing information must be obtained from the public assessment roll through the Assessor's counter or request channel, subject to protected-record rules.
That policy changes the meaning of a ZIP-wide owner search. A person cannot enter 94523 and receive a verified list of Pleasant Hill owners from ParcelQuest. A researcher can validate one address, capture its APN, inspect the parcel surroundings in CCMAP, and then request the lawful assessment-roll information for a defined record question. The county publishes a $50 staffed radius-search alternative, but that is a paid research service, not an open postal browse.
Parcel splits and mergers can also change APNs. The current ZIP and street label may not match an older deed's lot or subdivision language. Use the APN, map reference, and legal description together when a historical property trail matters.
Nearby Pleasant Hill ZIP Codes Need Care
94520, 94518, and 94521 are nearby Concord postal areas. Their proximity can make a search result look local, but a nearby ZIP is not evidence that the address lies inside Pleasant Hill. 94597 belongs to Walnut Creek and the Contra Costa Centre area near Pleasant Hill BART. Research also names 94596 in the neighboring Walnut Creek geography. None should be marketed as a Pleasant Hill city ZIP without an address-level check.
For a resident or parcel question, retain both labels: the postal city and the incorporated jurisdiction. A mailing label can say Concord or Walnut Creek while the surrounding community is described colloquially as Pleasant Hill. The reverse can also happen when a place name carries the word Pleasant Hill but the city or ZIP belongs elsewhere.
Local records follow the custodian, not the searcher's shorthand. A Concord postal address may lead to a different city permit office. A 94597 address near the station may require Walnut Creek or county channels. The county assessor, Clerk-Recorder, court, and city district lookup make those distinctions visible before a request is filed.
The California voter-registration guidance reinforces the need to treat address and jurisdiction as separate questions when a ZIP code is used as a search clue.
The voter image belongs in the ZIP workflow as a boundary reminder. Registration status is returned to the voter, while a full file is not a public ZIP or block directory.
ZIP Limits Around Pleasant Hill
No verified Pleasant Hill source documents a citywide street-renumbering year, a ZIP split or realignment year, or a ZIP-level registration count. That is an honest research limit, not evidence that no change ever occurred. If an old address appears to shift, compare the modern assessor map with subdivision or parcel records, check the Recorder's legal description, and ask USPS to validate the current mailing label.
Note: No verified ZIP split year was found, so suspected changes require USPS and parcel-map comparison.
Pleasant Hill's 1961 incorporation is another historical boundary. Earlier deeds, census entries, and directories may name unincorporated Contra Costa, Concord, or Walnut Creek area geography. A modern postal guide built only from current labels will miss that older language. The safest bridge is address, APN, legal description, and date, checked against the custodian that held the record at that time.
Boundary check. Treat 94523 as the principal verified Pleasant Hill ZIP, then verify the exact address before attaching a city record, district, parcel, or resident clue.