Altadena, CA ZIP Codes
2 ZIP codes serve Altadena, California: 91104 and 91001. Together they are home to 71,412 residents in 26,075 households. That is more than the 41,705 people counted inside Altadena Census-designated place, because these ZIP codes reach past its boundary. Median household income ranges from $105,958 in 91104 to $134,903 in 91001.
Altadena Census-designated place
| Measure | Census figure |
|---|---|
| Residents | 41,705 |
| Households | 15,092 |
| Median household income | $128,720 |
| Median home value | $1,120,000 |
| Median age | 46.4 |
| Median rent | $2,355 |
All 2 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 71,412 |
| Households (sum of ZIP codes) | 26,075 |
| Median household income, range across ZIP codes | $105,958 (91104) to $134,903 (91001) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $119,930 |
| Homeowners | 67.2% |
| Households with kids under 18 | 29.8% |
| Moved in the past year | 6.4% |
| Carrier routes in EDDM2GO's route library | 40 routes, 21,160 homes (2 of 2 ZIP codes) |
Top facts
- Highest median household income in Altadena: 91001 ($134,903)
- Most residents: 91104 (35,937 people)
- Highest homeownership: 91001 (79.9% own their home)
- Most households with kids: 91001 (30.4% of households)
- Most new movers: 91104 (6.8% moved in last year)
- Youngest median age: 91104 (41.7 years)
- Highest median home value: 91001 ($1,135,200)
Every ZIP code in Altadena
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 91104 | Pasadena | 35,937 | 13,488 | $105,958 | $1,080,100 | 55.4% | 29.3% | 6.8% | 25 | 14,348 | 18% of its land |
| 91001 | Altadena | 35,475 | 12,587 | $134,903 | $1,135,200 | 79.9% | 30.4% | 5.9% | 15 | 7,720 | 94% of its land; mailing city |
A ZIP code is listed for Altadena when at least 10% of its land lies inside the Altadena Census-designated place, when it holds at least 10% of the place's land, or when its USPS mailing city is Altadena. The table shows which applies. Totals add up whole ZIP codes, so they include any parts outside Altadena.
Counties
- Los Angeles County — 298 ZIP codes
Nearby cities sharing these ZIP codes
- Pasadena — 7 ZIP codes
Price a mailing to Altadena ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Altadena, CA?
- 91104 and 91001. A ZIP code is listed for Altadena when at least 10% of its land lies inside the Altadena Census-designated place, when it holds at least 10% of the place's land, or when its USPS mailing city is Altadena.
- What is the population of Altadena, CA?
- The Census Bureau counts 41,705 residents inside Altadena Census-designated place (ACS 2020–2024). The 2 ZIP codes that serve Altadena hold 71,412 residents in all.
- What is the median household income in Altadena, CA?
- $128,720 inside Altadena Census-designated place, per the Census Bureau. Across its ZIP codes the medians run from $105,958 to $134,903.
- Which Altadena ZIP code has the highest median household income?
- 91001, at $134,903, among ZIP codes with at least 1,000 residents.
- How many carrier routes and mailboxes are in Altadena, CA?
- For the 2 of 2 ZIP codes in EDDM2GO's stored route library: 40 carrier routes reaching 21,160 residential and 904 business mailboxes.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.