ZIP Code 95430

Zip Code: 95430
Type: POBox
Official USPS city name: Duncans Mills
Official USPS State Code: CA
Official State Name: California
ZCTA: TRUE
Population: 7.0
Density: 11.4
Primary Official County Code: 6097
Primary Official County Name: Sonoma
Official County Name: Sonoma
Official County Code: 6097
Imprecise: FALSE
Military: FALSE
Timezone: America/Los_Angeles (16:02 PM Sunday, June 14 2026-06-14 (GMT -0700))
Geo Point: 38.46138, -123.04717

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