Door drops and flyer distribution in Madrid: coverage, proof and measured response
Madrid has 1,340,178 mailboxes, according to Spain's INE census. Carto runs two services there: door-to-door drops and hand-to-hand distribution. Every route is verified with GPS and photo proof, and every response is measured with a QR code or a short link.
How a door drop works in Madrid
A door drop goes into the mailbox, not the door. A Carto crew covers the districts you pick, street by street, without skipping a building. The route is planned before distribution and tracked by GPS for the full shift. You see the real route on your dashboard, not a promise.
Every mailbox covered gets a geolocated photo as proof. The flyer carries a QR code or a short link, and each response is counted by zone and by hour. The minimum order is 25,000 mailboxes. That is the volume at which district-level data is reliable.
Hand-to-hand distribution in Madrid
Hand-to-hand distribution is different. One person hands the flyer to another, face to face, on the street or at an event. It works well in busy areas or on specific dates, like an opening or a festival. The minimum order is 10,000 flyers.
Outside Barcelona, hand-to-hand distribution includes the crew's travel to the city. That is why cost is worked out case by case, based on the date and the exact location in Madrid. The calculator at /simulador gives you a first estimate.
How much it covers: Madrid's 21 districts
Madrid has 21 districts and 1,340,178 mailboxes, with a population of 3,362,335 people. These figures come from the official INE census, the same source Carto uses to work out coverage for every campaign.
You do not need to cover the whole city. At /simulador you pick the districts that matter to you and see the exact mailbox count and cost per customer before you book anything.
What gets measured in every Madrid campaign
- GPS and photo proof of every mailbox covered, street by street.
- A QR code or short link measured by zone and hour, not just one total.
- Data pushed into your own analytics with UTM parameters.
Our track record: honest about where we have run campaigns
We have not published a measured campaign in Madrid yet. Our measured campaigns so far ran in Barcelona and in Cadiz. In Poblenou, Barcelona, a real door drop reached a 4.1% response rate. In hand-to-hand distribution, we measured between 3.3% and 4.8%, in Barcelona and in Cadiz.
In Madrid we use the same crews, the same GPS, the same photo proof and the same dashboard as in those campaigns. The way we measure is the same across the 10 cities where Carto operates. Only the map changes. You can see those full cases at /case-studies, and read more about what response rate to expect at /door-drop-response-rate.
Frequently asked questions about door drops in Madrid
Does Carto run door drops in Madrid?
Yes, Carto runs door drops in Madrid. It covers the 1,340,178 mailboxes across its 21 districts, verified with GPS and photo proof, using the same crews that work in the rest of the 10 cities where Carto operates.
How many mailboxes does Madrid have?
Madrid has 1,340,178 mailboxes, according to the INE census, spread across 21 districts. Choose how many to cover at /simulador, starting from the minimum of 25,000 mailboxes per campaign.
What is the minimum order in Madrid?
The minimum is 25,000 mailboxes for a door drop and 10,000 flyers for hand-to-hand distribution. Outside Barcelona, hand-to-hand distribution includes the crew's travel to Madrid.
What results has Carto measured so far?
Carto has not published a measured campaign in Madrid yet. The measured campaigns so far ran in Barcelona and Cadiz: a 4.1% response rate on a door drop, in Poblenou, and between 3.3% and 4.8% hand-to-hand. Madrid uses the same crews and the same measurement system.
What gets measured in a Madrid campaign?
The route is measured with GPS, each mailbox gets photo proof, and the response is measured with a QR code or short link, by zone and by hour. The data reaches your dashboard and, if you want, your own analytics through UTM parameters.
Further reading: case studies measured with GPS and QR · expected response rate · what a flyer campaign costs
Calculate your coverage in Madrid
Pick your districts in the simulator and see the mailbox count, the estimated reach and the cost per customer before you talk to us.