Walnut Creek is a city in Contra Costa County, California, home to about 70,088 people across 20 square miles. Its ZIP codes are 94595, 94596, 94597 and 94598, and parts of 94518 are in Walnut Creek too.
Homes sold for a median of $625 per square foot across 4 ZIP codes in the three months ending August 2026, and all of them were seller’s markets.
Mostly Walnut Creek; also Saranap and Castle Hill
Mostly Walnut Creek; also San Miguel (Contra Costa County)
Mostly Walnut Creek; also Contra Costa Centre and Acalanes Ridge
Mostly Walnut Creek; also Contra Costa Centre and North Gate
Mostly Concord; part is in Walnut Creek
Each card is that ZIP code’s whole market, including any part outside Walnut Creek. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Walnut Creek’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Oakland San Francisco Bay Airport (OAK)16 miles away |
|---|---|
| Closer regional airport | Buchanan Field (CCR)6 miles away |
| Nearest city of 250,000+ | Oakland, CA14 miles away |
| Nearest city of 1 million+ | Los Angeles, CA337 miles away |
Straight-line distances from the center of Walnut Creek; 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.
Walnut Creek had 70,127 residents in the 2020 census, up 9% since 2000.
It’s the 131st largest of 1,563 towns in California by population.
Contra Costa County grew from 18,046 residents in 1900 to 1,165,927 in 2020.
Contra Costa County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 88°F in summer, and winter lows average 41°F. About 17.9 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Concord Wwtp, CA weather station (5 miles away).
343,690 jobs at 25,932 businesses in Contra Costa County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
3,244 doctors and other health care providers list an office in Walnut Creek’s ZIP codes.
Nearest hospitals
Providers with an office here
| Primary care doctors | 380 |
|---|---|
| Specialist doctors | 1,057 |
| Dentists | 183 |
| Nurse practitioners and physician assistants | 399 |
| Mental health providers | 846 |
| Physical and occupational therapists | 254 |
| Optometrists | 50 |
| Chiropractors | 75 |
| Pharmacies | 29 |
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 (29 nearby)
Grocery stores (14 nearby)
Pharmacies (4 nearby)
Libraries (3 nearby)
Museums (3 nearby)
Theaters and performance venues (3 nearby)
Counts are within about 3 miles 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 1849.
Notable people born here
Source: Wikidata (wikidata.org), the free knowledge base; people are listed by place of birth.
Public schools here are run by Mt. Diablo Unified, Walnut Creek Elementary, Contra Costa School of Performing Arts District and others. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Bancroft ElementaryWalnut Creek | K–5 | 672 | Public | 1.5 mi |
| Buena Vista ElementaryWalnut Creek | K–5 | 495 | Public | 1.3 mi |
| Indian Valley ElementaryWalnut Creek | K–5 | 355 | Public | 1.0 mi |
| Murwood ElementaryWalnut Creek | K–5 | 451 | Public | 1.7 mi |
| Parkmead ElementaryWalnut Creek | K–5 | 478 | Public | 1.8 mi |
| Tice CreekWalnut Creek | K–8 | 451 | Public | 1.7 mi |
| Valle Verde ElementaryWalnut Creek | K–5 | 485 | Public | 2.5 mi |
| Walnut Acres ElementaryWalnut Creek | K–5 | 689 | Public | 1.7 mi |
| Walnut Heights ElementaryWalnut Creek | K–5 | 427 | Public | 1.1 mi |
| Eagle Peak MontessoriWalnut Creek | 1–8 | 301 | Charter | 2.0 mi |
| Contra Costa School of Performing ArtsWalnut Creek | 6–12 | 285 | Charter | 2.0 mi |
| Foothill MiddleWalnut Creek | 6–8 | 1,005 | Public | 1.9 mi |
| Walnut Creek IntermediateWalnut Creek | 6–8 | 940 | Public | 0.5 mi |
| Acalanes Center for Independent StudyWalnut Creek | 9–12 | 61 | Alternative Education | 2.7 mi |
| Las Lomas HighWalnut Creek | 9–12 | 1,577 | Public | 1.3 mi |
| Northgate HighWalnut Creek | 9–12 | 1,546 | Public | 2.2 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Contra Costa Christian SchoolsWalnut Creek | Pre-K–12 | 335 | Christian (no specific denomination) | 2.0 mi |
| Kla Schools of Walnut CreekWalnut Creek | Pre-K–K | 32 | Nonsectarian | 1.8 mi |
| My Spanish VillageWalnut Creek | Pre-K–K | 6 | Nonsectarian | 1.2 mi |
| Seven Hills SchoolWalnut Creek | Pre-K–8 | 378 | Nonsectarian | 0.9 mi |
| St Mary Elementary SchoolWalnut Creek | Pre-K–8 | 300 | Roman Catholic | 1.4 mi |
| Wcpc PreschoolWalnut Creek | Pre-K–TK | 11 | Presbyterian | 1.1 mi |
| Sonder Creek AcademyWalnut Creek | TK–8 | 102 | Nonsectarian | 1.7 mi |
| Lindamood-Bell Learning Processes Walnut CreekWalnut Creek | 2–6 | 4 | Nonsectarian | 0.9 mi |
| Noble Learning Academy LlcWalnut Creek | 6–8 | 41 | Nonsectarian | 1.2 mi |
| Fusion Academy--Walnut CreekWalnut Creek | 7–12 | 40 | Nonsectarian | 1.5 mi |
| Berean Christian High SchoolWalnut Creek | 9–12 | 380 | Christian (no specific denomination) | 0.9 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools; Private School Universe Survey (2023-2024) for private schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with Concord, Contra Costa Centre, Saranap, San Miguel (Contra Costa County), Acalanes Ridge, Castle Hill, North Gate and Shell Ridge.
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.