Antioch, CA ZIP Codes
2 ZIP codes serve Antioch, California: 94509 and 94531. Together they are home to 116,477 residents in 37,381 households. Median household income ranges from $86,196 in 94509 to $120,927 in 94531.
Antioch city limits (Census)
| Measure | Census figure |
|---|---|
| Residents | 116,477 |
| Households | 37,381 |
| Median household income | $97,465 |
| Median home value | $629,700 |
| Median age | 38.4 |
| Median rent | $2,278 |
All 2 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 116,477 |
| Households (sum of ZIP codes) | 37,381 |
| Median household income, range across ZIP codes | $86,196 (94509) to $120,927 (94531) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $99,115 |
| Homeowners | 63.7% |
| Households with kids under 18 | 38.3% |
| Moved in the past year | 9.6% |
| Carrier routes in EDDM2GO's route library | 72 routes, 38,736 homes (2 of 2 ZIP codes) |
Top facts
- Highest median household income in Antioch: 94531 ($120,927)
- Most residents: 94509 (70,090 people)
- Highest homeownership: 94531 (73.2% own their home)
- Most households with kids: 94509 (38.6% of households)
- Most new movers: 94531 (10.6% moved in last year)
- Youngest median age: 94509 (38.1 years)
- Highest median home value: 94531 ($701,600)
Every ZIP code in Antioch
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 94509 | Antioch | 70,090 | 23,476 | $86,196 | $584,100 | 58.0% | 38.6% | 8.9% | 43 | 24,825 | 86% of its land; mailing city |
| 94531 | Antioch | 46,387 | 13,905 | $120,927 | $701,600 | 73.2% | 37.7% | 10.6% | 29 | 15,755 | 89% of its land; mailing city |
A ZIP code is listed for Antioch when at least 10% of its land lies inside Antioch city limits, when it holds at least 10% of the place's land, or when its USPS mailing city is Antioch. The table shows which applies. Totals add up whole ZIP codes, so they include any parts outside Antioch.
Counties
- Contra Costa County — 47 ZIP codes
Price a mailing to Antioch ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Antioch, CA?
- 94509 and 94531. A ZIP code is listed for Antioch when at least 10% of its land lies inside Antioch city limits, when it holds at least 10% of the place's land, or when its USPS mailing city is Antioch.
- What is the population of Antioch, CA?
- The Census Bureau counts 116,477 residents inside Antioch city limits (ACS 2020–2024). The 2 ZIP codes that serve Antioch hold 116,477 residents in all.
- What is the median household income in Antioch, CA?
- $97,465 inside Antioch city limits, per the Census Bureau. Across its ZIP codes the medians run from $86,196 to $120,927.
- Which Antioch ZIP code has the highest median household income?
- 94531, at $120,927, among ZIP codes with at least 1,000 residents.
- How many carrier routes and mailboxes are in Antioch, CA?
- For the 2 of 2 ZIP codes in EDDM2GO's stored route library: 72 carrier routes reaching 38,736 residential and 1,843 business mailboxes.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.