Arcata, CA ZIP codes
Arcata, California has 2 ZIP codes, including 1 PO Box ZIP. They are in Humboldt County.
- Population in these ZIPs
- 21,980
- Avg. median income
- $53,100population-weighted
- Typical home value
- $470,500population-weighted
- Metro area
- Eureka-Arcata, CA
Loading map…
Click anywhere on the map to see which ZIP code it's in.
Arcata, CA ZIP codes list
| ZIP code | County | Population | Median income | Typical home value |
|---|---|---|---|---|
| 95518 PO Box | Humboldt County | — | — | — |
| 95521 | Humboldt County | 21,980 | $53,114 | $470,500 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities near Arcata
- Bayside 3 mi
- Eureka 7 mi
- Mckinleyville 7 mi
- Samoa 9 mi
- Fields Landing 12 mi
- Korbel 13 mi
- Blue Lake 14 mi
- Loleta 15 mi
- Kneeland 15 mi
- Trinidad 18 mi
- Hydesville 20 mi
- Fortuna 20 mi
Frequently asked questions
What county is Arcata, California in?
Arcata ZIP codes are in Humboldt County.
Which Arcata ZIP codes are PO Boxes?
95518 is a PO Box or single-organization ZIP code; it has no residential delivery area.