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The 94528 ZIP Code is centered1 in Contra Costa County at latitude 37.838 and longitude -121.954. It is a PO Box type ZIP Code. Contra Costa County is in the Pacific Time Zone (UTC -8 hours) and observes daylight savings time.
Diablo, CA 94528 Map (Marker is ZIP Code Centroid)
Local Search, 94528 ZIP Code| Distance & Driving Directions
Nearby Cities, Towns & Census Designated Places
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Diablo, CA
(< 0.1 mile) Rock City, CA (1.4 miles NE) Alamo Oaks, CA (1.9 miles W) Danville, CA (2.7 miles WSW) Blackhawk, CA (2.7 miles ESE) |
San Ramon, CA
(4.3 miles SSW) Alamo, CA (4.3 miles W) Tassajara, CA (5.8 miles ESE) Walnut Heights, CA (6 miles WNW) Marsh Creek Springs, CA (6.7 miles NE) |
Nearby Neighborhoods, Subdivisions & Other Small Populated Places
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Brookshire, CA
(6.8 miles SW) Sunny Acres Trailer Park, CA (9.5 miles NNW) Rheem, CA (9.6 miles W) Leona Heights, CA (12.7 miles WSW) Eastmont, CA (12.8 miles WSW) |
Millsmont, CA
(12.8 miles WSW) Redwood Heights, CA (13.1 miles WSW) Vineyard Mobile Villa, CA (13.1 miles SSE) Diamond, CA (13.1 miles NNE) Cornwall, CA (13.3 miles NNE) |
ZIP Codes - Key Concepts
- ZIP Codes are categories for grouping mailing addresses and are not exact geographic regions.
- The centroid of a ZIP Code may be in one County and the associated city/town in another.
- In rural areas, a single ZIP Code may be used for cities and towns in several different Counties.
- ZIP Code "areas" can overlap, be subsets of each other, or be artificial constructs with no geographic area.
- ZIP Codes are only loosely tied to cities.
1 Keeping the above key concepts in mind, what we informally refer to as the "center" of a ZIP Code is most often actually the centroid of a polygon.
