What city is ZIP code 91125?

91125 is a Pasadena, California ZIP code.

What county is 91125 in?

ZIP code 91125 is in Los Angeles County, California.

What time zone is ZIP code 91125 in?

91125 is in the Pacific Time zone (America/Los_Angeles).

What area code is 91125?

Phone numbers in ZIP code 91125 use area code 626.

What is the population of ZIP code 91125?

About 1,000 people live in ZIP code 91125, according to the Census Bureau’s American Community Survey (2020–2024).

Can I use 91125 for a street address?

Only for mail to the organization it is assigned to. Other addresses in Pasadena use a standard ZIP code.

What ZIP codes are near 91125?

The nearest ZIP codes to 91125 are 91102 (Pasadena, 0 miles), 91109 (Pasadena, 0 miles), 91110 (Pasadena, 0 miles) and 91114 (Pasadena, 0 miles).

ZIP code 91125

Where is ZIP code 91125?

Pasadena, California

Los Angeles County · Unique ZIP code

ZIP code 91125 belongs to Pasadena, California in Los Angeles County. 91125 is a unique ZIP code assigned to a single organization (Cal Tech) that gets a lot of mail. It is in the Pacific Time zone and uses area code 626. About 1,000 people live in the 91125 area. The closest ZIP codes are 91102 (Pasadena, 0 mi north), 91109 (Pasadena, 0 mi north) and 91110 (Pasadena, 0 mi north).

ZIP code	91125
Type	Unique ZIP code for a single organization
Status	Active
City	Pasadena
State	California (CA)
County	Los Angeles County
Time zone	Pacific Time · now
Area code	626
Coordinates	34.1478, -118.1445 map
3-digit prefix	911

Population and income in 91125

Population	1,000 · lower than 81% of California ZIP codes
People per square mile	5,650 · higher than 77% of California ZIP codes
Median age	21.7 years · lower than 98% of California ZIP codes
Men / women	56% / 44%
Income per person	$11,768
Below the poverty line	27%
Bachelor’s degree or higher	31% of adults 25+
Housing units	97
Households	97 (3.35 people on average)
Owners / renters	0.0% / 100%
Land area	0.18 sq mi

Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 91125. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.

ZIP codes near 91125

ZIP code	City	Distance	Type
91102	Pasadena, CA	0 mi N	PO Box only
91109	Pasadena, CA	0 mi N	PO Box only
91110	Pasadena, CA	0 mi N	Unique
91114	Pasadena, CA	0 mi N	PO Box only
91115	Pasadena, CA	0 mi N	PO Box only
91116	Pasadena, CA	0 mi N	PO Box only
91117	Pasadena, CA	0 mi N	PO Box only
91121	Pasadena, CA	0 mi N	Unique
91123	Pasadena, CA	0 mi N	Unique
91124	Pasadena, CA	0 mi N	Unique
91126	Pasadena, CA	0 mi N	Unique
91129	Pasadena, CA	0 mi N	Unique

Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 91125 or measure the distance to another ZIP code.

How to address mail to 91125

JANE SMITH
123 MAIN ST
PASADENA CA 91125

Put the city, the two-letter state code and the ZIP code on the last line. Adding the 4-digit ZIP+4 code (91125-XXXX) helps mail sort faster but isn’t required.

Other ZIP codes in Pasadena, CA

All Pasadena ZIP codes with population and income →

Questions

What city is ZIP code 91125?: 91125 is a Pasadena, California ZIP code.
What county is 91125 in?: ZIP code 91125 is in Los Angeles County, California.
What time zone is ZIP code 91125 in?: 91125 is in the Pacific Time zone (America/Los_Angeles).
What area code is 91125?: Phone numbers in ZIP code 91125 use area code 626.
What is the population of ZIP code 91125?: About 1,000 people live in ZIP code 91125, according to the Census Bureau’s American Community Survey (2020–2024).
Can I use 91125 for a street address?: Only for mail to the organization it is assigned to. Other addresses in Pasadena use a standard ZIP code.
What ZIP codes are near 91125?: The nearest ZIP codes to 91125 are 91102 (Pasadena, 0 miles), 91109 (Pasadena, 0 miles), 91110 (Pasadena, 0 miles) and 91114 (Pasadena, 0 miles).