ZIP code
91931
Guatay, CA
91931 covers Guatay in San Diego County, with 735 people in the ACS 2023 estimate.
Figures are for the Census ZIP Code Tabulation Area (ZCTA), which is not the same as a USPS ZIP code. A PO Box or unique ZIP may have no ZCTA and no demographics. Methodology
U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: ZCTA 91931. Methodology
ZIP code map of 91931

About ZIP code 91931
More enterprise fields
Commercial ZIP directory · not ACS
Commercial ZIP directory population_count for ZCTA 91931. Not ACS. Methodology
People in 91931
Race
- White416
- Black or African American1
- American Indian or Alaska Native1
- Asian1
- Other race30
- Two or more races32
Hispanic or Latino (any race): 59
Age
- Under 1041
- 10 to 1936
- 20 to 2957
- 30 to 3957
- 40 to 4947
- 50 to 5989
- 60 to 6999
- 70 to 7943
- 80 and older12
Income and housing in 91931
Education
- High school graduate79.4%
- Bachelor's degree19.9%
- Graduate degree0.0%
Places covering 91931
Cities and places — Population overlap
Share of this ZIP/ZCTA’s population located within each place, based on ZIP Code Database place-overlap data. This is a population measure, not land-area overlap or the Census-place population.
No place overlap rows for this ZIP.
ZIP Code Database place-overlap table, field percent_of_zip_population_in_place, keyed by place_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology
Counties — Population overlap
Share of this ZIP/ZCTA’s population located within each county, based on ZIP Code Database county-overlap data. This is a population measure, not land-area overlap or the Census county population.
- San Diego County100.0%
ZIP Code Database county-overlap table, field percent_of_zip_population_in_county, keyed by county_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology
100.0% of this ZIP is outside city limits (a real overlap row, not missing data).
Population history for 91931
Hover the chart or read the table below (Year | ACS | IRS).
| Year | ACS population | IRS population |
|---|---|---|
| 2005 | 419 | |
| 2006 | 406 | |
| 2007 | 431 | |
| 2011 | 449 | |
| 2012 | 377 | |
| 2013 | 489 | |
| 2014 | 331 | |
| 2015 | 486 | |
| 2016 | 474 | 400 |
| 2017 | 370 | |
| 2018 | 496 | |
| 2019 | 613 | |
| 2020 | 530 | |
| 2021 | 765 | |
| 2022 | 749 | |
| 2023 | 735 |
ACS: U.S. Census Bureau American Community Survey 5-year estimates. IRS: Statistics of Income ZIP Code data.
ZIP codes near 91931
12 nearest ZIP centroids (any distance)
- 91962Pine Valley3.6 miPop 2,457 · Income $140,270
- 91916Descanso5.9 miPop 1,757 · Income $110,833
- 91948Mount Laguna6.5 miPop 123 · Income —
- 91901Alpine8.7 miPop 18,300 · Income $116,600
- 91963Potrero13.1 miPop 617 · Income $25,208
- 91906Campo13.8 miPop 3,375 · Income $58,561
- 91935Jamul15.1 miPop 9,466 · Income $138,953
- 91917Dulzura16.9 miPop 889 · Income $157,941
- 92021El Cajon17.1 miPop 69,306 · Income $69,979
- 92019El Cajon17.4 miPop 45,801 · Income $99,266
- 91980Tecate17.7 miPop 157 · Income —
- 92040Lakeside18.7 miPop 45,978 · Income $103,585
ZIP centroids within 2 miles
No other ZIP codes within 2 miles of 91931, measured by Census internal-point centroids. Try a wider radius.
ZIPs within 2 miles of this place
Default is 2 miles. Distances are between ZIP centroids. Widen the radius if nothing is in range.
ZIP code 91931 FAQ
- What city is ZIP code 91931 in?
- 91931 is in Guatay, CA.
- What county is 91931 in?
- 91931 is in San Diego County.
- What is the median household income in 91931?
- The median household income in 91931 is $49,808.
- Which ZIP codes are near 91931?
- Use the radius tool on this page to list ZIP codes within a chosen distance of 91931.