Search by ZIP, address, city, or county:

ZIP Code 91931

Post Office City:Guatay, CA (View All Cities)
ZIP Type: PO Box (Reserve a PO Box)
County: San Diego County
Timezone: Pacific (7:55am)
Coordinates:32.84, -116.58
ZIP (~2 mile radius)

Cities in ZIP code 91931

The list below includes the cities that the US Post Office accepts for ZIP code 91931. The preferred city may not be the city in which the ZIP is located. The city for 91931 is usually the name of the main post office. When mailing your package or letter, always include the preferred or acceptable cities. Using any city in the list of unacceptable cities may result in delays.

Primary/preferred city:
Guatay, CA

Stats and Demographics for the 91931 ZIP Code

ZIP code 91931 is located in southeast California and covers a slightly less than average land area compared to other ZIP codes in the United States. It also has a slightly less than average population density.

The people living in ZIP code 91931 are primarily white. The number of middle aged adults is extremely large while the number of people in their late 20s to early 40s is slightly higher than average. There are also an extremely small number of families and a large number of single adults. The percentage of children under 18 living in the 91931 ZIP code is slightly higher than average compared to other areas of the country.

Population 592
Population Density 41 people per sq mi
Housing Units 288
Median Home Value $70,700
Land Area 14.47 sq mi
Water Area 0.00 sq mi
Occupied Housing Units 248
Median Household Income $24,426

Estimated Population over Time

Total Population by Age

Median Age: 44Male Median Age: 44Female Median Age: 44

Under 5141731
85 Plus448


 Male 305 52%
 Female 287 48%


 White 517 87.3%
 Black Or African American 0 0.0%
 American Indian Or Alaskan Native 8 1.4%
 Asian 3 0.5%
 Native Hawaiian & Other Pacific Islander 0 0.0%
 Other Race 46 7.8%
 Two Or More Races 18 3.0%

Head of Household by Age

85 Plus505

Families vs Singles

 Husband Wife Family Households 90 36%
 Single Guardian 48 19%
 Singles 90 36%
 Singles With Roommate 20 8%
Families vs Singles

Households with Kids

Average Household Size: 2
 Households without Kids 175 71%
 Households with Kids 73 29%
Households with Kids

Children by Age


Real Estate and Housing

ZIP code 91931 has a slightly less than average percentage of vacancies.

The majority of household are owned or have a mortgage. Homes in ZIP code 91931 were primarily built in the 1980s. Looking at 91931 real estate data, the median home value of $70,700 is low compared to the rest of the country. It is also extremely low compared to nearby ZIP codes. 91931 could be an area to look for cheap housing compared to surrounding areas. Rentals in 91931 are most commonly 1 bedrooms. The rent for 1 bedrooms is normally $300-$499/month including utilities. Prices for rental property include ZIP code 91931 apartments, townhouses, and homes that are primary residences.

Housing Type

 In Occupied Housing Units 592 100%
 Correctional Facility For Adults 0 0%
 Juvenile Facilities 0 0%
 Nursing Facilities 0 0%
 Other Institutional 0 0%
 College Student Housing 0 0%
 Military Quarters 0 0%
 Other Noninstitutional 0 0%
Housing Type

Year Housing was Built

Housing Occupancy

 Owned Households With A Mortgage 75 26%
 Owned Households Free & Clear 89 31%
 Renter Occupied Households 84 29%
 Households Vacant 40 14%
Housing Occupancy

Vacancy Reasons

 For Rent 7 18%
 Rented & Unoccupied 0 0%
 For Sale Only 7 18%
 Sold & Unoccupied 2 5%
 For Season Recreational Or Occasional Use 20 50%
 For Migrant Workers 0 0%
 Vacant For Other Reasons 4 10%
Vacancy Reasons

Owner Occupied Home Values

Rental Properties by Number of Rooms

 Studio Apartment 0 0%
 1 Bedroom 27 100%
 2 Bedroom 0 0%
 3+ Bedroom 0 0%
Rental Properties by Number of Rooms

Cost of Monthly Rent Including Utilities

Cost of a Studio Apartment

Cost of a 1 Bedroom

Cost of a 2 Bedroom

Cost of a 3+ Bedroom

Employment, Income, Earnings, and Work

The median household income of $24,426 is compared to the rest of the country. It is also compared to nearby ZIP codes. While money isn't everything, ZIP code 91931 may not be as nice as other parts of town.

As with most parts of the country, vehicles are the most common form of transportation to places of employment. Pedestrians and cyclists beware. The area has some of lowest percentages of commutes without a vehicle in the country. Compared to other ZIP codes in the country, 91931 has very few people that work at home. In most parts of the country, the majority of commuters get to work in under half an hour. The commute in 91931 is that short for a higher percentage of workers than almost anywhere in the United States. Many commuters should consider themselves lucky that they don't have a longer commute. It is very uncommon, compared to the rest of the US, for employees to have to travel more than 45 minutes to their place of employment.

Employment Status

 Worked Full-time with Earnings 101 31%
 Worked Part-time with Earnings 65 20%
 No Earnings 157 49%
Employment Status

Average Household Income over Time

Household Income

Annual Individual Earnings

Source of Earnings

 Worked Full-time with Earnings 101 31%
 Worked Part-time with Earnings 65 20%
 No Earnings 157 49%
Source of Earnings

Means Of Transportation To Work for Workers 16 and Over

 Car, truck, or van 166 100%
 Public transportation 0 0%
 Taxicab 0 0%
 Motorcycle 0 0%
 Bicycle, Walked, or Other Means 0 0%
 Worked at Home 0 0%
Means Of Transportation To Work for Workers 16 and Over

Travel Time to Work (In Minutes)

Schools and Education

The population has a much higher percentage of people with low education levels (less than high school) than normal. The population is likely to value education because they are very well educated themselves. A much higher percentation of the population has received a college degree.

Educational Attainment For The Population 25 Years And Over

 Less than High School Diploma 42 15%
 High School Graduate 181 64%
 Associate's degree 27 10%
 Bachelor's degree 9 3%
 Master's degree 24 8%
 Professional school degree 0 0%
 Doctorate degree 0 0%
Educational Attainment For The Population 25 Years And Over

School Enrollment (Ages 3 to 17)

 Enrolled in Public School 104 76%
 Enrolled in Private School 0 0%
 Not Enrolled in School 32 24%
School Enrollment (Ages 3 to 17)

Nearby ZIP Codes