What Is Reach?
Reach is one of the most fundamental metrics in digital marketing. It tells you the size of the unique audience that has been exposed to a specific piece of content, campaign, or advertisement. If your Facebook post is seen by 3,000 different people, your reach is 3,000, regardless of whether some of those people saw the post two or three times.
This distinction between reach and impressions is important. Impressions count every view, including repeated views by the same person. A post with 6,000 impressions and 3,000 reach means, on average, each person saw it twice. Both numbers matter, but for different reasons. Reach tells you how broad your audience exposure was, while impressions tell you how often your message was displayed.
Reach is typically broken down into two types. Organic reach refers to the unique people who see your content without any paid promotion, driven by the platform's algorithm and your followers sharing or engaging with your posts. Paid reach refers to the unique people who see your content because of a paid advertisement. Total reach is the combination of both, with overlap removed so individuals are not counted twice.
Platform reporting calculates reach slightly differently. Meta platforms (Facebook and Instagram) calculate reach within a 28-day window by default, counting unique accounts that saw at least one impression from your content. LinkedIn and TikTok use similar unique-viewer logic. Understanding how each platform measures reach prevents misleading comparisons across channels.
Reach In Practice
The scenario below is an illustrative example, not a Juicy Designs client result. The figures indicate the scale of effect that reach-focused campaign work typically produces, so treat them as indicative rather than measured.
Picture a Cape Town restaurant chain running a new seasonal menu campaign on Instagram that sets a target of reaching 50,000 unique users in the Western Cape over a two-week period. Its organic reach from existing followers averages around 8,000 per week. To bridge the gap, it allocates a paid social budget targeting food enthusiasts aged 25 to 45 within a 30-kilometre radius of its locations. A campaign like this might report a combined reach in the region of 54,000 unique users, with around 38,000 of those coming from paid promotion and around 16,000 from organic exposure.
This kind of split reporting would be valuable because it would show the return on ad spend in audience terms. The team would be able to see that the paid budget extended the audience roughly five times beyond the organic baseline. For South African businesses with limited budgets, maximising reach efficiently requires good targeting: broad reach with poor targeting wastes rand, while well-targeted reach at a smaller scale often converts better and costs less per meaningful interaction. Reach should always be evaluated alongside engagement rate and conversion data to judge true campaign effectiveness.
How do reach and frequency work together?
Reach and frequency are two halves of the same picture. Reach is how many unique people saw your content; frequency is how many times, on average, each of them saw it. A campaign that reaches 50,000 people at a frequency of 1.2 has spread wide but shallow; the same budget at a frequency of 4 has reached fewer people but pressed the message harder. Neither is universally right. Awareness goals favour wide reach at low frequency, while consideration and conversion goals often need enough frequency, commonly three to five exposures, for the message to land. Watch both together: rising frequency with flat reach means you are paying to show the same people the same thing.
How is reach measured across platforms?
Each platform counts reach a little differently, so numbers are not directly comparable. Meta reports the number of unique accounts that saw content at least once; Google counts unique users across the Display and Video networks; and organic search has no true reach figure, only impressions. Because a single person may use several devices and accounts, reported reach is always an estimate rather than a headcount. The practical rule is to compare reach against the same platform over time, not across platforms, and to read it alongside frequency and engagement so you know whether the people you reached actually responded.
FAQ
What is the difference between reach and impressions?
Reach counts unique people, while impressions count total views including multiple views by the same person. If one person sees your post three times, that is one reach and three impressions. Reach tells you audience size; impressions tell you how often your content was displayed.
What is a good reach for a South African social media campaign?
A good reach depends heavily on your audience size and budget. For organic posts, reaching 5 to 10 percent of your followers is considered solid. Paid campaigns targeting South African audiences can achieve significantly higher reach, depending on targeting precision and spend.
Can reach ever be higher than impressions?
No. Impressions count every view, including repeats, while reach counts unique people, so impressions are always equal to or greater than reach. If a report shows reach above impressions, the measurement is misconfigured.
Why does organic reach keep declining?
Social platforms increasingly favour paid and highly engaging content in crowded feeds, so the share of followers who see an unpaid post has fallen over time. Consistently engaging content, and some paid amplification, are now usually needed to sustain reach.