US ZIP Code
91931

Guatay, CA

San Diego County  ·  California

● Active
👥 735 Population ↑ 20% since 2019
💰 $49,808 Median HH Income
▼ 35% below avg
🎂 40.0 Median Age ↑ 10% since 2019
🎓 20.7% College Grads
▼ 47% below avg
📊 7.6% Unemployment
▲ 56% above avg ↓ 57% since 2019
ZIP Code Details
ZIP Code91931
CityGuatay
StateCalifornia (CA)
CountySan Diego County
Area Code619/858
Elevation3,857 ft
Latitude32.837596
Longitude-116.580305
TimezoneLos Angeles (DST)
FIPS06073
ZIP TypePO Box
StatusActive
People & Population (ACS 2023)
♂ Male 46.5% (342) Female 53.5% (393) ♀

Race & Ethnicity

White: 69.9%Hispanic: 28%Other: 2%Race
White69.9%
Hispanic28.0%
Other2.0%

Age Breakdown

Under 5
8%
5–17
17%
25–44
36%
45–64
7%
65+
18%

Key Indicators

Median Age40.0 yrs ↑ 10% since 2019
Avg Household Size2.63
Below Poverty7.8% ▼ 22% below avg
College Grads20.7% ▼ 47% below avg
Unemployment7.6% ▲ 56% above avg
No HS Diploma91 (17.3%)
HS Graduate103 (19.5%)
Some College94 (17.8%)
Associates130 (24.7%)
Graduate Degree109 (20.7%)

Education

No HS: 17.3%HS Grad: 19.5%Some College: 17.8%Associates: 24.7%Graduate: 20.7%Edu
No HS17.3%
HS Grad19.5%
Some College17.8%
Associates24.7%
Graduate20.7%
Housing & Income

Housing Tenure

Owner: 78.2%Renter: 21.8%Tenure
Owner78.2%
Renter21.8%

Home Value Distribution

Under $50k
40%
$50k–100k
33%
$100k–150k
13%
$300k–500k
8%
Over $500k
7%

Financials

Median HH Income$49,808 ▼ 35% below avg
Total Units333
Vacant Units53
Avg HH Size2.63

Income Distribution

Under $25k
7%
$25k–50k
34%
$50k–75k
38%
$75k–100k
12%
$100k–150k
8%
Employment & Commute

How People Get to Work

Drove Alone
100%

Commute Time

15–30 min
60%
30–45 min
40%
Housing Stock

Year Built

Before 1940
4%
1940s–1950s
3%
1960s–1970s
15%
1980s–1990s
28%
2000+
50%

Summary

Total Units333
Vacant53
Owner Occupied78.2%
Renter Occupied21.8%
Avg HH Size2.63
Frequently Asked Questions
ZIP code 91931 is in Guatay, CA, in San Diego County.
ZIP code 91931 is located in California (CA).
ZIP code 91931 is in San Diego County, CA.
ZIP 91931 observes the Los Angeles timezone. Daylight Saving Time is observed.
The estimated population of ZIP code 91931 is 735 people (ACS 2023).
The median household income in ZIP code 91931 is $49,808 (ACS 2023).
Home value data not available.
About ZIP Code 91931

ZIP code 91931 is located in Guatay, California, within San Diego County. With a population of 735, this is a sparsely populated ZIP code with a middle-aged community — the median age is 40 years. Economically, 91931 is a working-class ZIP code: the median household income of $49,808 is below the national average.

The population of 91931 is majority White (69.93%). Residents are less-educated — 20.7% hold a bachelor's degree or higher, which is below the national average. Poverty affects a relatively small share of residents at 7.8%.

The unemployment rate in 91931 stands at 7.6%, which is significantly above the national average. As in most parts of the country, driving alone is the dominant commute mode at 74%.

Overall, ZIP code 91931 in Guatay, CA is characterized as working-class, less-educated, a middle-aged community, and predominantly owner-occupied.