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The 94509 ZIP Code is centered1 in Contra Costa County at latitude 37.995 and longitude -121.804 (Panoramio Photos). It is a standard type ZIP Code. Contra Costa County is in the Pacific Time Zone (UTC -8 hours) and observes daylight savings time.
The population in ZIP Code Tabulation Area (ZCTA) 94509 was 90,879 with 30,226 housing units; a land area land area of 30.8 sq. miles; a water area of 0.19 sq. miles; and a population density of 2,950.80 people per sq. mile for Census 2000. Demographic Profile
Antioch, CA 94509 Map (Marker is ZIP Code Centroid)
Local Search, 94509 ZIP Code| Distance & Driving Directions
Nearby Cities, Towns & Census Designated Places
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Antioch, CA
(< 0.1 mile) Newlove, CA (2.4 miles E) Bridgehead, CA (2.7 miles ENE) Los Medanos, CA (2.7 miles WNW) Neroly, CA (3.1 miles E) |
West Hartley, CA
(3.9 miles S) Stewartville, CA (4.1 miles SW) Somersville, CA (4.3 miles SW) Oakley, CA (4.9 miles E) Nortonville, CA (4.9 miles WSW) |
Nearby Neighborhoods, Subdivisions & Other Small Populated Places
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Cornwall, CA
(4.5 miles WNW) Arbor, CA (4.9 miles ESE) Diamond, CA (5.1 miles WNW) Toland Landing, CA (7.1 miles NNE) Noverd, CA (9.2 miles NE) |
Mackenson, CA
(10.7 miles NE) Meins Landing, CA (11.4 miles NNW) Sunny Acres Trailer Park, CA (12.5 miles W) Newtown, CA (13.8 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.
