Zip Code 92821 — Brea, CA
92821 is a ZIP Code associated with Brea, CA, located within Orange. 92821 ranks #35 out of 88 ZIP codes in Orange County by population (and #357 out of 1,802 in CA). The area supports an estimated population of 41,623 residents across Data Pending housing units, with a population density of 1,137.2 people per square mile.
WorldPlaceData database updated: October 2026
📍 View location on OpenStreetMap (33.929970, -117.869860)
| Data Metric | Local Statistic |
|---|
| Postal / Zip Code | 92821 |
| Primary City | Brea |
| State / Province | CA |
| County | Orange |
| Total Population | 41,623 |
| Median Household Income | Data Pending |
| Total Housing Units | Data Pending |
| Population Density | 1,137.2 people/sq mi |
| Timezone | America/Los_Angeles |
How 92821 Compares
| Metric | ZIP 92821 | Orange County | CA State Average |
|---|
| Population | 41,623 | 3,138,331 (Total) | 39,286,245 (Total) |
| Average ZIP Income | Data Pending | N/A | N/A |
| Population Density | 1,137.2 /sq mi | -- | -- |
| County Pop Rank | #35 of 88 | -- | -- |
Nearby ZIP Codes
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 →