ZIP Code Tabulation Area · California

ZIP Code 93420: San Luis Obispo County, CA

ZIP Code 93420 (San Luis Obispo County, California) has an estimated 31,345 residents in 12,672 households. The median household income is $110,553, the median home value is $917,900 and the median gross rent is $2,187/mo. Figures are U.S. Census Bureau American Community Survey 2020–2024 5-year estimates for the matching ZIP Code Tabulation Area.

American Community Survey 2020–2024 5-year estimates · Updated

Total population

31,345

Margin of error ±1,337

Median household income

$110,553

Margin of error ±$4,535

Median home value

$917,900

Margin of error ±$37,163

Median gross rent

$2,187/mo

Margin of error ±$140

Median age

48.2 yrs

Margin of error ±3.0 yrs

Mean travel time to work

23.2 min

Margin of error ±3.3 min

How ZIP 93420 compares with California and the U.S.

State and national figures are the Census Bureau's own estimates for those areas from the same ACS release, not averages of ZIP codes.

Median age

ZIP 9342048.2 yrsCalifornia37.9 yrsUnited States38.9 yrs

Median household income

ZIP 93420$110,553California$99,122United States$80,734

Per capita income

ZIP 93420$53,468California$49,513United States$44,673

Poverty rate

ZIP 934206.4%California12.0%United States12.5%

Unemployment rate

ZIP 934204.5%California6.6%United States5.2%

Bachelor's degree or higher

ZIP 9342044.1%California37.1%United States35.7%

Median home value

ZIP 93420$917,900California$734,700United States$332,700

Median gross rent

ZIP 93420$2,187/moCalifornia$2,036/moUnited States$1,413/mo

Owner-occupied homes

ZIP 9342066.4%California55.9%United States65.2%

Mean travel time to work

ZIP 9342023.2 minCalifornia28.7 minUnited States26.4 min

Worked from home

ZIP 9342014.8%California17.2%United States15.1%

All figures for ZIP 93420

Each estimate has a 90% margin of error: the true value is likely within that range. * marks estimates with a large margin of error (a coefficient of variation above 30%, or ±10 percentage points or more for rates).

ZIP 93420 — ACS 2020–2024 5-year estimates
MeasureZIP 93420Margin of errorCaliforniaUnited States
Total population31,345±1,33739,287,377334,922,499
Median age48.2 yrs±3.0 yrs37.9 yrs38.9 yrs
Households12,672±66213,548,091129,227,496
Median household income$110,553±$4,535$99,122$80,734
Per capita income$53,468±$2,884$49,513$44,673
Poverty rate6.4%±2.4 pts12.0%12.5%
Unemployment rate4.5%±1.3 pts6.6%5.2%
Bachelor's degree or higher44.1%±2.5 pts37.1%35.7%
Median home value$917,900±$37,163$734,700$332,700
Median gross rent$2,187/mo±$140$2,036/mo$1,413/mo
Owner-occupied homes66.4%±3.8 pts55.9%65.2%
Mean travel time to work23.2 min±3.3 min28.7 min26.4 min
Worked from home14.8%±3.5 pts17.2%15.1%

Race and Hispanic or Latino origin

Shares of the total population by the Census Bureau's race and Hispanic or Latino origin categories (table B03002), listed in the Census Bureau's order. People self-identify on the survey.

Population by race and Hispanic or Latino origin, ZIP 93420
GroupZIP 93420CaliforniaUnited States
White alone, not Hispanic or Latino66.4%33.8%57.4%
Black or African American alone, not Hispanic or Latino0.5%5.2%11.9%
American Indian and Alaska Native alone, not Hispanic or Latino0.1%0.3%0.5%
Asian alone, not Hispanic or Latino3.6%15.3%5.9%
Native Hawaiian and Other Pacific Islander alone, not Hispanic or Latino0.0%0.3%0.2%
Some other race alone, not Hispanic or Latino0.5%0.6%0.6%
Two or more races, not Hispanic or Latino7.5%4.4%4.3%
Hispanic or Latino (of any race)21.3%40.2%19.3%

Where ZIP 93420 is

State
California
Main county
San Luis Obispo County
Largest overlapping place
Arroyo Grande (3% of the ZIP's land area)
Land area
197.43 sq mi· about 159 people per sq mi

County and place names come from the Census Bureau's 2020 ZCTA relationship files. A ZIP code's mailing city, set by the U.S. Postal Service, can differ from these names.

Other ZIP codes in San Luis Obispo County

93401 San Luis Obispo County, CA93402 Los Osos, CA93405 San Luis Obispo County, CA93410 California Polytechnic State University, CA93422 Atascadero, CA93424 San Luis Obispo County, CA93428 San Luis Obispo County, CA93430 San Luis Obispo County, CA93432 San Luis Obispo County, CA93433 Grover Beach, CA93442 San Luis Obispo County, CA93444 Nipomo, CA93445 San Luis Obispo County, CA93446 San Luis Obispo County, CA93449 Pismo Beach, CA93452 San Luis Obispo County, CA93453 San Luis Obispo County, CA93461 San Luis Obispo County, CA93465 San Luis Obispo County, CA

See every ZIP code in California, or compare ZIP 93420 with another ZIP code.

Census figures describe residents as a group and cannot tell you about any one home or street. For a specific address, check local government and housing records.

About ZIP codes and ZCTAs: the Census Bureau publishes statistics for ZIP Code Tabulation Areas, which approximate USPS ZIP code delivery areas. Learn how they differ.

Sources

  • U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, detailed tables B01003, B01002, B11001, B19013, B19301, B17001, B23025, B15003, B25077, B25064, B25003, B08013, B08303, B08301, B03002 — snapshot Oct 26, 2026.
  • U.S. Census Bureau, 2020 ZCTA5 relationship files (county and place).
  • Data: U.S. Census Bureau, American Community Survey 5-year estimates (detailed tables) and 2020 Census ZCTA relationship files. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau. These agencies do not endorse OpenZIP.