What Does All Users Represent in Google Analytics?

When you open Google Analytics, one of the first metrics you’ll encounter is "Users," often within the context of the "All Users" segment. While it seems straightforward, what this number actually represents can be the source of a lot of confusion. This article will clarify exactly what "All Users" means in GA4, how it's different from other user metrics, and how you can use it to get a clearer picture of your website's performance.

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What Exactly is the "All Users" Segment in GA4?

In Google Analytics 4, "All Users" is the default, unfiltered segment that includes every single person who has had at least one session on your website or app within a specific date range. Think of it as the total count of your unique audience members. Whether someone visited your site once for 30 seconds or came back every day for a month, they are counted just one time within that "All Users" total for the period you're looking at.

Google identifies unique users primarily through two methods:

• Client ID: When a person first visits your site, Google Analytics places a small cookie on their browser with a unique, randomly-generated ID. GA4 uses this Client ID to recognize the same user across multiple sessions from that same browser and device. If they clear their cookies or visit from a different device, they’ll be counted as a new user.
• User-ID: If you have a login system, you can implement the User-ID feature. This lets you assign a persistent, non-personally identifiable ID to your signed-in users. This is far more accurate because it can track the same individual across different devices (like their phone, laptop, and tablet) as long as they are logged in, consolidating their activity into a single user profile.

Essentially, "All Users" serves as your foundational audience number. It’s the full pool of people from which all other segments and comparisons are drawn. When you look at an Analytics report without any filters applied, you’re looking at data from "All Users."

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"All Users" vs. "New Users": What's the Difference?

One of the most common points of confusion is the distinction between "All Users" and "New Users." Many GA4 reports, like the User acquisition report, place these two metrics side-by-side, so it's important to understand how they differ.

• All Users: The total number of unique users who have initiated a session on your site within the selected date range. This includes both new and returning visitors.
• New Users: The number of users who interacted with your site or launched your app for the very first time. GA4 identifies a new user based on the first_visit (for websites) or first_open (for apps) event.

Let’s use an example. Imagine in a given week:

• Sarah visits your blog for the first time on Monday.
• Mark visits your blog for the first time on Tuesday and comes back again on Thursday.
• Jessica, who visited your site last month, comes back on Friday.

For that week, your user metrics would be:

• New Users: 2 (Sarah and Mark)
• All Users: 3 (Sarah, Mark, and Jessica)

This difference helps you measure audience growth ("New Users") versus audience loyalty and engagement ("All Users" minus "New Users"). A high number of “New Users” indicates your marketing and acquisition efforts are working, while a large gap between “All Users” and “New Users” signals you have a solid returning user base.

How to Find and Use "All Users" Reports

"All Users" is the default setting for most standard reports in GA4. Here is where you will commonly find and analyze this data to get a baseline understanding of your audience.

User Attributes Reports

Your demographic and geographic data lives here. It's perfect for understanding the composition of your total audience.

1. Navigate to Reports > User > User attributes in the left-hand navigation.
2. Click on either Demographic details or Tech details.
3. By default, you’ll see charts breaking down "Users" by attributes like Country, City, Gender, or Age. That "Users" metric is your "All Users" count.

This is your starting point for answering questions like, "Where do most of my users come from?" or "What age groups are most common in my audience?"

Acquisition Reports

These reports show you where your users are coming from. This is critical for assessing which marketing channels are most effective in reaching an audience.

1. Navigate to Reports > Acquisition.
2. You have two main options: User acquisition and Traffic acquisition.
3. The User acquisition report shows you the channels that are responsible for bringing you new users. Both "New Users" and "Users" (meaning All Users) are included here so you can contrast acquisition with engagement.
4. The Traffic acquisition report is session-scoped. It tells you which channels initiated sessions. You'll still see "Users" here, representing the total number of unique people that came from each channel.

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Going Beyond the Default: Creating Comparisons

The real power of "All Users" comes when you use it as a benchmark to compare against more specific audience segments. GA4's "Comparisons" feature is a quick and effective way to do this directly within your reports.

Imagine you want to see how your mobile audience behaves compared to your overall audience. Here's how you'd set that up:

1. Open any standard report, such as the Demographic details report. You'll see the data for the "All Users" segment is already loaded.
2. At the top of the report, click Add comparison.
3. A panel will slide out on the right. In the "Build new condition" section, use the "Dimension" dropdown to find and select Device Category.
4. For "Dimension values," check the box for mobile.
5. Click Apply.

You will now see two sets of data side-by-side: your total "All Users" in one column and your "Mobile Users" in another. This simple comparison allows you to spot key differences instantly. Are mobile users younger? Do they come from different countries? This type of segmented analysis is where insights are born.

You can use this method to compare "All Users" against a source (e.g., Google Organic), a country, a specific landing page, and dozens of other attributes.

Common "All Users" Questions & Potential Pitfalls

Understanding the nuances of how "All Users" is calculated helps avoid common data misinterpretations.

Is "All Users" the Same as Pageviews or Sessions?

No, and this is a critical distinction. These three metrics measure different things:

• Users: The number of unique people.
• Sessions: The number of visits. One user can have multiple sessions. A new session starts after 30 minutes of inactivity or at midnight.
• Views (formerly Pageviews): The total number of times pages were seen. One user can view many pages in a single session.

Your "All Users" count will almost always be the smallest of these three core metrics. Viewing them together provides a complete picture of top-level engagement.

Why Doesn't the "All Users" Number Match Other Platforms?

You might notice that the "All Users" count in GA4 doesn't match the "Reach" in Facebook Ads or your subscriber count in HubSpot. This is normal and expected. Every platform measures traffic and engagement differently using its own tracking methods, definitions, and attribution models. Focus on the trends within GA4 rather than searching for exact parity between platforms.

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Can GA4 Ever Miscount Users?

Yes, but it does its best to be accurate. The cookie-based method is imperfect. For example:

• If a single person visits your site from their work laptop and their personal phone, GA4 will count them as two separate users unless you have User-ID implemented.
• If a user clears their browser cookies, they will be counted as a "New User" on their next visit.
• If multiple people use the same public computer (like at a library), their activity might be collapsed under a single Client ID.

This is where another feature, Google Signals, comes in. If enabled, Signals uses aggregated and anonymized data from users who are signed into their Google accounts and have Ads Personalization turned on. This helps GA4 de-duplicate users across different devices, giving you a more accurate "All Users" count. When Signals is active and doesn’t have enough data to be certain, GA4 uses statistical modeling to estimate the behavior of these cross-device users.

Final Thoughts

The "All Users" metric is the foundation of audience analysis in Google Analytics. It provides a comprehensive, high-level view of your website's total audience size for any given period. By understanding it as the master count of unique visitors, you can use it as a baseline to measure growth, track long-term trends, and create meaningful comparisons against more specific segments of your traffic.

While mastering GA4's reporting interface is a valuable skill, digging through reports to filter and compare segments can be repetitive and time-consuming. We built Graphed to remove this friction by connecting directly to your Google Analytics data and letting you get answers in plain English. Instead of building user comparisons manually, you can simply ask, "Compare traffic from the US vs the UK last month" or "Show me a dashboard of my top acquisition channels," and get the visualizations you need instantly. This allows you to spend less time building reports and more time acting on the insights they provide.