California programmatic DOOH — market context
Trillboards operates 918 active digital out-of-home screens across 215 cities in California, delivering programmatic ads to local audiences as of May 11, 2026. The state's inventory spans 16 venue categories — anchored by retail stores and complemented by mixed-format venues — with primary density in Los Angeles, Alameda, Long Beach.
California is a national tier-1 CPM market — premium creative routinely clears among the highest rates in the United States. Programmatic clearing across the state's inventory typically ranges $7–$20 CPM, with the upper end reflecting prime-window prime-venue placements during weekday lunch (11 AM-2 PM) and the weekday-evening leisure window (5-9 PM).
The state-level venue-category distribution by active screen count: retail stores (388 screens), mixed-format venues (339 screens), entertainment venues (90 screens), health & beauty stores (42 screens), transit screens (25 screens). Buyers running creative against California can mix-and-match these categories within a single flight, using IAB Audience Taxonomy 1.1 codes to compose audience archetypes that span the state's commercial-and-leisure footprint without re-bidding for each format.
Audience-archetype distributions in California reflect the state's demographic mix and venue-category breakdown. Programmatic buyers using the IAB Audience Taxonomy 1.1 codes can compose multi-segment campaigns inside the state — for example, mixing morning retail stores placements (commuter-and-shopping audience) with evening leisure-venue placements (entertainment-and-bar audience) to reach distinct dayparts inside a single flight. Proof-of-play telemetry from every screen confirms each billable impression independently of the SDK quartile callbacks, giving advertisers a verifiable delivery record across all 215 cities served.
Seasonality across California DOOH inventory follows predictable patterns: Q4 typically delivers the strongest CPM clearing prices as retail-and-consumer-brand advertisers ramp holiday spend, Q1 sees softer clearing as advertiser budgets reset, and Q2-Q3 produce steady mid-band clearing as travel, automotive, and back-to-school campaigns rotate through the inventory. Buyers planning year-long flights against California should expect roughly 30-40% of the year's total impression delivery to clear during the October-December window.
Drill into city-level inventory using the California city directory below — each city page reports its own venue-category fingerprint, audience-archetype mix, and aggregate screen count.
Buyers access California DOOH inventory through Trillboards' partner-side programmatic integrations (OpenRTB 2.6 with native VAST 4.x) or directly through the Trillboards Connect SDK for direct-sold flights. Operators of public-facing venues anywhere in the state can join the network at no cost; activation requires a single sign-up and a 30-minute one-time install of the Trillboards player app on any existing screen, TV stick, or kiosk. Revenue accrues on a 50/50 split of every cleared impression, settled monthly.