Home > CA > Contra Costa County > Moraga > Zip 94556

Zip Code 94556 — Moraga, CA

ZIP Code 94556 is associated with Moraga, CA, in Contra Costa County. The listed population estimate is 15,998; estimated density is 320.4 people per square mile. Among records with population estimates, it ranks #29 of 43 in Contra Costa County and #887 of 1,762 in CA.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (37.831020, -122.104250)

Data MetricLocal Statistic
Postal / Zip Code94556
Primary CityMoraga
State / ProvinceCA
CountyContra Costa
Total Population15,998
Population Density320.4 people/sq mi
TimezoneAmerica/Los_Angeles

How 94556 Compares

MetricZIP 94556Contra Costa County recordsCA records
Population estimate15,9981,171,369 (sum)39,286,245 (sum)
Population Density320.4 /sq mi----
County population rank#29 of 43----
State population rank#887 of 1,762----

Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.

Explore More ZIP Codes

Nearby ZIP Codes in CA

ZIP CodeCityDistancePopulation estimate
ZIP 94575Moraga0.8 mi975
ZIP 94516Canyon3.4 mi214
ZIP 94595Walnut Creek3.4 mi16,988
ZIP 94619Oakland4.0 mi26,831
ZIP 94549Lafayette4.9 mi28,420

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →