City
Walnut Creek
Walnut Creek is a city record. City or town offices may handle local rules inside their limits, while county offices still handle records, taxes, courts, and many services.
Starting point
Confirm the address is inside local limits first.
If the address is inside Walnut Creek, city or town offices may handle local permits, code, and services. If it is outside limits, county routing may be the better first stop.
A mailing city is not always the same as city government jurisdiction.
2025 population
70,012
Land area
19.76 sq mi
Water area
0.012 sq mi
Directory notes
Local layers to keep on the same page.
Confirm city or town limits.
A mailing address can use a nearby place name. If the address is outside limits, county offices may handle permits, code, and land-use routes.
County still matters.
Contra Costa County can still matter for assessor, tax collector, recorder, court, public health, social service, and election records.
Some layers are separate.
Water, sewer, fire, school, utilities, coast, earthquake maps, wildfire zones, parks, and trails may point outside city hall.
County layer
County shown for Walnut Creek
Practical notes
Office, map, permit, and paperwork notes for Walnut Creek
Place note · Outdoors · Reviewed July 6, 2026
Ruth Bancroft Garden makes dry gardening feel alive
Ruth Bancroft Garden in Walnut Creek shows cacti, succulents, and drought-tolerant plants in a walkable garden that feels especially useful in a dry California climate.
Place note · Cars and driving · Reviewed July 6, 2026
Walnut Creek downtown parking changes by block, meter, and garage
Walnut Creek downtown parking has different meter zones, garage pricing, and a parking data map that helps show busy blocks by time and place.
Place note · Cars and driving · Reviewed July 5, 2026
Walnut Creek parking permits depend on the neighborhood zone
Walnut Creek residential parking permits apply only in listed PRPP neighborhoods, with resident permits tied to vehicles and guest permits handled separately.
Place note · Rules and licenses · Reviewed July 4, 2026
Walnut Creek business licenses should start with the address
Walnut Creek business licenses can depend on city limits, zoning, home occupation permits, use permits, and online permit tools, so the address should be checked early.
Place note · Home and property · Reviewed July 4, 2026
Walnut Creek report links work like a service directory
Walnut Creek's contact page routes report-a-service questions by topic, with different phone paths for traffic, building inspections, code enforcement, graffiti, dumping, irrigation, and other issues.
County layer · Cars and driving · Reviewed July 6, 2026
Antioch BART is the end of the Yellow Line
Antioch Station is a Yellow Line terminal with parking, Tri Delta Transit connections, bike lockers, restrooms, and a train transfer pattern riders should know.
Almanac notes
Stories and local context near Walnut Creek
Place note · Outdoors
Walnut Creek open space has trail rules worth checking
Walnut Creek's open-space system covers thousands of acres, but trail use, dogs, bikes, e-bikes, fire, smoking, and daylight hours can vary by area.
County layer · History and culture
Brentwood's local history museum keeps East County farm memory close
East Contra Costa Historical Museum in Brentwood gives the growing city a place for farm, school, family, and small-town history from the wider East County area.
County layer · History and culture
El Campanil Theatre keeps Antioch's Rivertown stage alive
El Campanil Theatre opened in downtown Antioch in 1928 and now works as a restored cultural venue in the Rivertown district.
County layer · History and culture
Richmond's old Carnegie library now holds city history
The Richmond Museum of History and Culture sits in the old Carnegie Library and connects Ohlone history, early city growth, and the WWII Homefront.
County layer · History and culture
Forest Home Farms keeps San Ramon's farm past in town
Forest Home Farms gives San Ramon a 16-acre historic farm, with Boone family buildings, old outbuildings, a walnut-processing past, and valley agriculture still visible.
County layer · History and culture
Pittsburg's name changed with the work on the waterfront
Pittsburg's history includes Rancho Los Medanos, fishing and canning, Black Diamond coal, waterfront shipping, industry, and Camp Stoneman.
County layer · History and culture
Antioch began as a river landing before it grew south
Antioch's early story starts near the San Joaquin River, where settlers chose the name in 1851 and river travel shaped the town before roads took over.
County layer · History and culture
Clayton's town story starts with Joel Clayton in Diablo Valley
Clayton was laid out in 1857 by Joel Clayton as a small Diablo Valley center for nearby mining, ranching, farming, and local trade.