Lake Forest California ZIP Codes

Lake Forest holds a single ZIP code.

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP. USPS delivery-type products are licensed, and no clean-rights source maps ZIP codes to neighbourhoods — so the Lake Forest codes above are listed without a column we would have to invent.

Scope every ZIP code recorded for Lake Forest. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. ZIP codes are delivery-route groupings, not areas; the boundaries implied by any ZIP map are approximations.

Every Lake Forest ZIP code begins 926. Those first three digits identify the sectional center facility that processes mail for this part of California. Statewide that range covers 62 ZIP codes, so Lake Forest accounts for 2% of it.

Every California ZIP prefix and the region it covers →

ZIP codes and area codes are separate systems — one routes mail, the other routes calls — and they do not share boundaries. The codes below serve the same ground Lake Forest occupies.

• 657 Area code 657
• 714 Area code 714
• 949 Area code 949

Lake Forest California area codes in full →

Straight-line distance between place reference points, not driving distance.