Union City, CA ZIP Codes
2 ZIP codes serve Union City, California: 94587 and 94552. Together they are home to 81,970 residents in 26,261 households. Median household income ranges from $133,715 in 94587 to $212,605 in 94552.
Union City city limits (Census)
| Measure | Census figure |
|---|---|
| Residents | 67,464 |
| Households | 21,240 |
| Median household income | $133,715 |
| Median home value | $1,104,900 |
| Median age | 43 |
| Median rent | $2,713 |
All 2 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 81,970 |
| Households (sum of ZIP codes) | 26,261 |
| Median household income, range across ZIP codes | $133,715 (94587) to $212,605 (94552) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $148,798 |
| Homeowners | 70.1% |
| Households with kids under 18 | 32.4% |
| Moved in the past year | 9.6% |
| Carrier routes in EDDM2GO's route library | 52 routes, 26,903 homes (2 of 2 ZIP codes) |
Top facts
- Highest median household income in Union City: 94552 ($212,605)
- Most residents: 94587 (67,464 people)
- Highest homeownership: 94552 (93.2% own their home)
- Most households with kids: 94552 (34.9% of households)
- Most new movers: 94587 (10.0% moved in last year)
- Youngest median age: 94587 (43.0 years)
- Highest median home value: 94552 ($1,394,300)
Every ZIP code in Union City
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 94587 | Union City | 67,464 | 21,240 | $133,715 | $1,104,900 | 64.7% | 31.8% | 10.0% | 41 | 23,037 | 63% of its land; mailing city |
| 94552 | Castro Valley | 14,506 | 5,021 | $212,605 | $1,394,300 | 93.2% | 34.9% | 7.5% | 11 | 5,189 | 13% of its land |
A ZIP code is listed for Union City when at least 10% of its land lies inside Union City city limits, when it holds at least 10% of the place's land, or when its USPS mailing city is Union City. The table shows which applies. Totals add up whole ZIP codes, so they include any parts outside Union City.
Counties
- Alameda County — 52 ZIP codes
Nearby cities sharing these ZIP codes
- Hayward — 5 ZIP codes
- Castro Valley — 3 ZIP codes
Price a mailing to Union City ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Union City, CA?
- 94587 and 94552. A ZIP code is listed for Union City when at least 10% of its land lies inside Union City city limits, when it holds at least 10% of the place's land, or when its USPS mailing city is Union City.
- What is the population of Union City, CA?
- The Census Bureau counts 67,464 residents inside Union City city limits (ACS 2020–2024). The 2 ZIP codes that serve Union City hold 81,970 residents in all.
- What is the median household income in Union City, CA?
- $133,715 inside Union City city limits, per the Census Bureau. Across its ZIP codes the medians run from $133,715 to $212,605.
- Which Union City ZIP code has the highest median household income?
- 94552, at $212,605, among ZIP codes with at least 1,000 residents.
- How many carrier routes and mailboxes are in Union City, CA?
- For the 2 of 2 ZIP codes in EDDM2GO's stored route library: 52 carrier routes reaching 26,903 residential and 1,326 business mailboxes.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.