831 Area Code

35 cities use the 831 area code in California.

The 831 area code spans 8 counties in California.

Median age: 38.17

Median age in Area Code 831 is 38.17 years. 11.33% of residents are aged 0-9. 12.02% of residents are aged 10-19. The percentage of residents in their twenties is 14.24. 15.81 % are in their thirties, 13.21% in their fourties, 12.78 % in their fifties, and 10.87 % in their sixties. 6.15 % of residents are in their seventies and 3.57 % are eighty and over.

49.45% are female
50.55% are male

50.55% of residents in Area Code 831 are male and 49.45% are female. 48.60% of residents are married and 10.04% are divorced. 37.05% have never been married. 4.29% are widowed. The average size of resident families is 3.37.

Median household income: 114,038.84
58.67% have two income earners
51.25% of households earn $100,000+

Median household income in Area Code 831 is $114,038.84 with 58.67% of families having two income earners. 51.25% of households earn at least $100,000. 2.21% of households have an income under $5,000, 1.59% from $5,000-$10,000, 3.21% from $10,000-$15,000, 2.53% from $15,000-$20,000, 2.60% from $20,000-$25,000, 5.44% from $25,000-$35,000, 7.64% from $35,000-$50,000, 12.43% from $50,000-$75,000, 11.09% from $75,000-$100,000, 16.94% from $100,000-$150,000 and 34.31% over $150,000. The median income of individuals is $51,307.27.

Median home value: $869,074.06
Median rent: $2,116.02
Rent burden: 31.24%

54.28% of households in Area Code 831 own (rather than rent) their residence. The median value of those homes is $869,074.06. The median rent paid by renters is $2,116.02 or 31.24% of the median renter's household income.

55.22% have a Science and Engineering degree

14.98% of residents in Area Code 831 have less than a high school education. 16.60% have a high school diploma but no more. 24.78% of residents have some college but no more. 24.43% have a bachelor's degree (or equivalent) but no more. 19.21% have a graduate degree. 55.22% have a Bachelor's degree or higher in a Science and Engineering (or related) field.

29.84 minutes of commute time

66.16% of residents in Area Code 831 16 and older are in the labor force. 5.58% of residents are unemployed. The median commute time of resident workers in Area Code 831 is 29.84 minutes.

33.24% report being Hispanic

45.43% of residents in Area Code 831 report their race as White. 4.85% report their race as Black or African American. 22.31% report their race as Asian. 0.57% report their race as American Indian and Alaska Native. 0.61% report their race as Native Hawaiian and Other Pacific Islander. 16.98% report their race as Some other race. 9.23% report their race as Two or more races. 33.24% report being Hispanic. Note: Hispanic is considered to be an ethnicity and not a race.

9.58% report a disability
9.77% speak limited English
5.84% have no health insurance
3.90% are veterans

9.58% of residents in Area Code 831 report a disability. 9.77% of residents only speak limited English. 5.84% of residents report not having health insurance. 3.90% of residents are veterans.

There are 84 ZIP codes within the 831 area code, covering cities across 8 counties in California.

• 209 (Fresno, CA)
• 213 (Los Angeles, CA)
• 279 (Sacramento, CA)
• 310 (Los Angeles, CA)
• 323 (Los Angeles, CA)
• 341 (San Francisco, CA)
• 408 (San Francisco, CA)
• 415 (Los Angeles, CA)
• 424 (Los Angeles, CA)
• 442 (Los Angeles, CA)
• 510 (Los Angeles, CA)
• 530 (San Francisco, CA)
• 559 (Los Angeles, CA)
• 562 (Los Angeles, CA)
• 619 (Los Angeles, CA)
• 626 (Los Angeles, CA)
• 628 (San Francisco, CA)
• 650 (San Francisco, CA)
• 657 (Los Angeles, CA)
• 661 (Los Angeles, CA)
• 669 (San Francisco, CA)
• 707 (San Francisco, CA)
• 714 (Los Angeles, CA)
• 747 (Los Angeles, CA)
• 760 (Los Angeles, CA)
• 805 (Los Angeles, CA)
• 818 (Los Angeles, CA)
• 820 (Los Angeles, CA)
• 840 (Riverside, CA)
• 858 (San Diego, CA)
• 909 (Los Angeles, CA)
• 916 (Sacramento, CA)
• 925 (San Francisco, CA)
• 949 (Los Angeles, CA)
• 951 (Los Angeles, CA)