Rio Dell is a city in Humboldt County, California, home to about 3,349 people across 2.3 square miles. Its ZIP code is 95562, and parts of 95540 are in Rio Dell too.
Homes sold for a median of $216 per square foot in the three months ending August 2026, a seller’s market.
Mostly Rio Dell
Mostly Fortuna; part is in Rio Dell
Each card is that ZIP code’s whole market, including any part outside Rio Dell. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Rio Dell’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Sacramento International Airport (SMF)184 miles away |
|---|---|
| Closer regional airport | California Redwood Coast-Humboldt County Airport (ACV)32 miles away |
| Nearest city of 250,000+ | Sacramento, CA195 miles away |
| Nearest city of 1 million+ | Los Angeles, CA547 miles away |
Straight-line distances from the center of Rio Dell; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Rio Dell had 3,379 residents in the 2020 census, up 6% since 2000.
It’s the 762nd largest of 1,563 towns in California by population.
Humboldt County grew from 27,104 residents in 1900 to 136,463 in 2020.
Humboldt County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 73°F in summer, and winter lows average 42°F. About 47.7 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Scotia, CA weather station (2 miles away).
34,729 jobs at 3,178 businesses in Humboldt County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
4 doctors and other health care providers list an office in Rio Dell.
Nearest hospitals
Providers with an office here
| Dentists | 3 |
|---|---|
| Nurse practitioners and physician assistants | 1 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Parks (2 nearby)
Grocery stores (2 nearby)
Pharmacies
Libraries (1 nearby)
Museums
Theaters and performance venues
Counts are within about 1 mile of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Established in 1965.
Source: Wikidata (wikidata.org), the free knowledge base; people are listed by place of birth.
Public schools here are run by Rio Dell Elementary. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Eagle Prairie ElementaryRio Dell | K–5 | 223 | Public | 0.8 mi |
| Monument MiddleRio Dell | 6–8 | 91 | Public | 0.9 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with Fortuna.
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.