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EngagementGeofence Remarketing

The event ends, your audience doesn’t leave

Geofence remarketing draws a boundary around the venues and moments that matter, the gala, the conference, the fairgrounds. Then your ads keep reaching the people who walked in for weeks after they walk out.

Five ways your business can use geofence remarketing

We draw a fence around the places that matter and keep reaching the crowd who walked in. Everyone stays counted, not personally identified.

Event Geofencing
0devices
Fencing the venue for your event window
donors.csv
112 Elm St✓
48 Harvest Ln✓
305 Cedar St✓
77 Maple Ct✓
Homeowners Donors 45–65 $75k+ income Recent movers
We build the address list from identifiers, no names needed.
One matched home
Phone
Tablet
Connected TV
Same household, every screen.

Sites and apps where StreamAd client campaigns have served. All trademarks belong to their respective owners, these are ad placements, not partnerships or endorsements.

What is geofence remarketing?

Geofence remarketing turns a place on the map into an audience you can keep reaching. There are two ways in, draw a boundary around a venue during your event and capture the devices seen inside, or hand us a list of addresses and we match each one to its rooftop. Galas, conferences, job sites, and campuses all work the same way.

It runs on advertising device IDs, counted, not personally identified. Those signals come from a location permission people already set on the apps they use, which feeds an ad marketplace we buy access to, so we reach the audience without ever collecting anyone’s identity. The whole thing rides on a phone setting each person already controls, and we steer clear of sensitive places.

StreamAd runs it as your agency of record. Once the audience is built we follow through with your ad across the screens they use, phone, tablet, and connected TV, for about thirty days, so one message reaches the whole household.

The proof is the part we like most. A conversion zone drawn around your own location counts the devices that saw your ad and later show up, then compares them to a natural baseline to show the lift your ads drove, footsteps, not just clicks. It pairs naturally with digital out of home in the physical world and display everywhere else, and our client reviews cover how it plays out in practice.

Geofence remarketing FAQ

Updated August 2026

How much does geofencing advertising cost?
Published industry rate guides put geofencing display ads at roughly $3.50 to $15 per thousand times your ad is shown, and $20 to $60 for streaming TV. You set the budget because it's bought by the impression, and a fence running only a few days pays a premium for that precision. A wider fence and a longer run bring the cost per thousand down, so the plan shapes the number too.
Can you geofence on Facebook or with Google Ads?
Facebook and Google Ads can aim ads at a location, though what they offer is geotargeting, a point on the map with a radius around it, rather than a true geofence. A radius reaches whoever happens to be nearby right now. A geofence captures the devices seen inside a specific building during a set window, like a conference hall over a weekend, and keeps reaching them for weeks after everyone's gone home.
Is geofencing legal?
No US law bans geofencing advertising outright, and the rules that do exist focus on sensitive places like health care. The geofence warrants in the news are court orders for account location histories, while ad campaigns buy audience pools where devices are counted, not personally identified. The ad reaches a place and a moment rather than a person, and a frequency cap limits how often one household sees it.
Does geofencing require an app or send push notifications?
No, geofencing advertising doesn't need you to have an app, and it doesn't send anyone a push notification. Those alerts need a business's own app and its users' opt in. We buy ordinary display, video, and streaming TV placements against advertising device IDs, so we handle aggregated audience data rather than anyone's identity. The audience exists because people granted apps location permission, and the opt out is resetting the phone's advertising ID.
How accurate is geofencing?
Geofencing accuracy comes down to the phone's location signal, which accuracy guides put within about 5 to 10 meters outdoors on GPS. That signal widens to about 30 to 100 meters in rural areas where cell towers carry it, and platform boundaries run looser. So shape matters more than size, because a fence drawn to the building footprint beats a dropped circle, and a dwell time filter screens out most passing traffic.
What is the difference between event and addressable geofencing?
Event geofencing captures whoever is physically inside a boundary you draw during a set window, and addressable geofencing starts from an address list instead. One catches who shows up, and the other reaches the households on a list, so nobody has to go anywhere for addressable to work. Each address is matched to its property boundary from county records rather than an IP address, and the fence holds at the household level.
How long does geofencing retargeting last?
Platform guides put the follow window at about thirty days after a device is seen inside a fence, and we set it to fit the moment. It's remarketing from a place a device visited rather than a website, and the ad follows the household across phone, tablet, and connected TV. Most platforms can also look back and rebuild an audience from earlier visitors, and even that history stays a counted device pool.
How many people will a geofence reach?
A geofence reaches fewer people than the attendance number, because a device only joins the audience after clearing several filters. Someone had to carry a phone inside the boundary, an app had to have location permission on, and the phone's advertising ID had to show up where ads get bought. Each step subtracts, and owners can switch that ID off, so a venue can come up too small to serve.
How do you prove geofencing worked?
We prove it with a modeled estimate of lift rather than a headcount, and a conversion zone at your location does the measuring. It's a second fence that counts the exposed devices that show up and weighs them against a baseline that saw no ad. When the conversion is a gift, an application, or a call, we read lift in donation page visits, form fills, and calls from the exposed audience.
Is there a contract, and who owns the audience?
Yes, we work on a contract, because a geofence audience compounds over weeks and needs a full quarter to prove itself, and what's yours stays yours. We set campaigns up so your organization owns the ad accounts, and any address list you bring stays your property. On this service the audience is the deliverable, so ownership carries more weight here than on most campaigns.

Let’s keep the crowd you already earned

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