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Atascadero, CA ZIP codes

Atascadero, California has 2 ZIP codes, including 1 PO Box ZIP. They are in San Luis Obispo County.

Population in these ZIPs
33,002
Avg. median income
$91,800population-weighted
Typical home value
$784,500population-weighted
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ZIP codes within 10 miles

Atascadero, CA ZIP codes list

Atascadero, CA ZIP codes
ZIP codeCountyPopulationMedian incomeTypical home value
93422San Luis Obispo County33,002$91,780$784,500
93423 PO BoxSan Luis Obispo County———

Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology

Cities near Atascadero

Frequently asked questions

What is the ZIP code for Atascadero, CA?

Atascadero, CA has 2 ZIP codes: 93422 and 93423.

What county is Atascadero, California in?

Atascadero ZIP codes are in San Luis Obispo County.

Which Atascadero ZIP codes are PO Boxes?

93423 is a PO Box or single-organization ZIP code; it has no residential delivery area.