Contra Costa County, California Zip Codes

Contra Costa County has 53 ZIP codes in this directory: 43 standard delivery ZIPs and 10 PO Box or unique ZIPs that carry no resident population in Census data. The 40 ZIPs with published Census housing data cover 1,168,801 residents, the largest being 94565 (Pittsburg) with 100,826 people.

The median ZIP in Contra Costa County has a household income of $120,565 and a home value of $766,500, a price-to-income ratio of 6.8, in line with the 6.7 California ZIP median. Affordability ranges from 94561 in Oakley at a ratio of 5.1 to 94507 in Alamo, where the median home is above the $2 million Census ceiling. The highest median income is in 94507 (Alamo) at more than $250,000. Median rent across these ZIPs is $2,393 a month.

72% of households in the typical Contra Costa County ZIP own their home (statewide ZIP median 64%). 42% of adults hold a bachelor's degree, above the 31% statewide median. The median poverty rate is 6.6%, below the 10.8% statewide ZIP median. Overall density is about 1,869 residents per square mile across 625 square miles of ZIP land area.