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ZIP code

91023

Mount Wilson, CA

PO BOX

91023 is a po box for Mount Wilson in Los Angeles County. Census ACS does not publish population, income, or home value for this code.

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

No matching Census ZCTA — demographics unavailable. Population, income, and home value are not published for this PO Box po box.

U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: ZCTA 91023. Methodology

About ZIP code 91023

Type

PO BOX

Timezone

America/Los_Angeles

Area codes

747, 818

More enterprise fields

Timezone
America/Los_Angeles
Area Codes
747, 818
World Region
NA
Country
US

Commercial ZIP directory · not ACS

U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: ZCTA 91023. Methodology

People in 91023

Census fields are empty for this ZIP.

Income and housing in 91023

ACS does not publish income or housing figures for this ZIP.

Places covering 91023

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.

No county overlap rows for this ZIP.

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

Population history for 91023

No history rows for this ZIP.

No ACS or IRS population history is published for this ZIP.

ZIP codes near 91023

12 nearest ZIP centroids (any distance)

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ZIP centroids within 2 miles

No other ZIP codes within 2 miles of 91023, measured by Census internal-point centroids. Try a wider radius.

ZIPs within 2 miles of this place

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Nearby ZIP codes

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ZIP code 91023 FAQ

What city is ZIP code 91023 in?
91023 is in Mount Wilson, CA.
What county is 91023 in?
91023 is in Los Angeles County.
What is the median household income in 91023?
Median household income is not published for 91023.
Which ZIP codes are near 91023?
Use the radius tool on this page to list ZIP codes within a chosen distance of 91023.