How Facebook Targeting Works

How Facebook knows where people live

Facebook doesn't ask its users to fill out a survey about where they live. It figures it out from a combination of signals:

• Profile information: Users enter their hometown and current city.
• Location tags: Check-ins at restaurants, events, and businesses all signal regular locations.
• Mobile device location data: Users who allow location access on their phone contribute ongoing location signals.
• IP address and Wi-Fi network patterns: What networks someone connects to most frequently at night is a strong home location signal.
• Behavioral patterns: Where someone browses the local news, what neighborhood groups they follow, what events they show interest in.

No single signal is perfect, but the combination is quite reliable. Facebook's location targeting is accurate enough that advertisers consistently find it one of their most effective parameters.

The geographic targeting options Facebook offers

Facebook's Ads Manager lets you target location in several ways, from broad to precise:

Country, state, or city (broad)

Show your ad to everyone in a country, state, or city. Useful for national brands. Almost never the right choice for a local business — you'd be paying to reach people who are hours away from your location.

Radius around a point (medium)

Show your ad to everyone within X miles of a specific address or map point. This is what most local businesses start with. It's simple and reasonably effective, but it has a significant flaw: radius circles don't respect neighborhoods.

A 3-mile radius from your business might include the affluent neighborhood to the north AND the industrial district to the south. You're paying to reach both, even though your customers almost certainly skew heavily toward one.

Specific locations — zip codes, cities, neighborhoods

Facebook lets you target by zip code or named neighborhood. Better than a radius, but zip codes are often still too large. A single zip code might cover 20,000 households across several very different neighborhoods.

Census block groups (precise) — what TerritoryIQ uses

The most precise geographic targeting Facebook supports for residential targeting is the census block group level. TerritoryIQ translates your map insights directly into block group targeting, so your campaign reaches exactly the neighborhoods your data says are most valuable.

Layering additional targeting on top

Geography is the foundation. But Facebook's targeting system lets you layer additional parameters on top of your geographic selection. These are optional — you don't need them to run an effective campaign — but they can sharpen your results:

Age and gender

If your business skews toward a specific age group or demographic, you can narrow your audience. A boutique fitness studio might focus on women ages 25–55. A neighborhood bar might target adults 21–45. Be careful not to over-narrow — a smaller audience drives up the cost per impression.

Interests and behaviors

Facebook builds interest profiles based on what pages people follow, what they click on, and what they engage with. A coffee shop might add "coffee enthusiasts" as an interest layer. A law office might add "legal services" or "small business owners." These aren't perfectly precise, but they can improve the relevance of who sees your ad.

Custom audiences

If you have a customer email list, you can upload it to Facebook and show your ads specifically to those people (useful for re-engagement campaigns) or to people who are similar to them (Facebook's "Lookalike Audience" feature). This becomes more powerful as your customer list grows.

The TerritoryIQ approach

When you click "Target this neighborhood" on your TerritoryIQ map, you're telling the platform: "Show my ad to the people who live in this specific set of households." Not a city. Not a radius. Not a zip code. The actual households in a neighborhood your data says is worth pursuing.

This is the difference between marketing to a neighborhood and marketing to a geography.