This page collects the backlink statistics worth quoting: how link counts line up with Google rankings, how few pages earn any links at all, how quickly links disappear, what link building costs, what Google says about links, and how links compare with brand mentions in AI search.
Every number links to the study or document that published it, with the sample and year. Most link data comes from SEO tool vendors such as Ahrefs and Backlinko, because they run the crawlers. These are correlation studies: they show that top pages have more links, and they cannot prove that links caused the ranking.
Backlinks and rankings
Large-scale studies consistently find that top-ranking pages have more links and more linking domains than the pages below them.
| Statistic | Source | Year |
|---|---|---|
| The #1 result in Google has an average of 3.8x more backlinks than positions 2 to 10. | Backlinko, Google ranking factors study of 11.8 million results | 2020 data |
| The #1 result has about 3x more referring domains than positions 2 to 10. | Backlinko, Google ranking factors study of 11.8 million results | 2020 data |
| Approximately 95% of all pages in the study had zero backlinks. | Backlinko, Google ranking factors study of 11.8 million results | 2020 data |
| 96.55% of pages in Ahrefs' 14 billion page sample get no traffic from Google. | Ahrefs, Search traffic study | 2023 |
| Of roughly 20 million pages with no referring domains, only 2,997 get more than 1,000 search visits a month. | Ahrefs, Search traffic study | 2023 |
| The average #1 ranking page is 5 years old, up from 2 years in Ahrefs' 2017 study. | Ahrefs, How long does it take to rank in Google | 2025 |
| Only 13.7% of pages in the top 10 were less than a year old. | Ahrefs, How long does it take to rank in Google | 2025 |
The "3.8x" figure is the one most often quoted on other sites. It compares the #1 result with the average of positions 2 to 10, so it describes a strong correlation at the very top of the results. Older pages tend to have had more time to collect links, which is part of why age and links move together.
How many pages earn links
Earning links is rare, which is why the pages that earn them stand out.
| Statistic | Source | Year |
|---|---|---|
| 94% of the world's content gets zero external links, in a sample of 912 million blog posts. | Backlinko and BuzzSumo, Content study | 2019 |
| Only 2.2% of content generates links from multiple websites. | Backlinko and BuzzSumo, Content study | 2019 |
| Content over 3,000 words gets about 77.2% more referring-domain links than content under 1,000 words. | Backlinko and BuzzSumo, Content study | 2019 |
Link rot
Links you earn do not last forever. Pages move, sites close and editors remove references.
| Statistic | Source | Year |
|---|---|---|
| Since January 2013, 66.5% of links pointing to the 2,062,173 websites Ahrefs sampled have rotted. | Ahrefs, Link rot study | 2024 |
| In total, 74.5% of links in the study are considered lost, including temporary errors and links that no longer count for ranking. | Ahrefs, Link rot study | 2024 |
What link building costs
Prices vary with the authority of the linking site and the tactic used. Buying links that pass ranking credit breaks Google's spam policies; these figures describe the market as it exists.
| Statistic | Source | Year |
|---|---|---|
| Ahrefs contacted 450 sites in nine niches and found an average price of $361.44 for a paid link placement. | Ahrefs, How much does it cost to buy backlinks | Updated 2024 |
| Only 12.6% of the sites contacted were willing to sell a link. | Ahrefs, How much does it cost to buy backlinks | Updated 2024 |
| Sites with "write for us" pages charged an average guest post fee of $77.80. | Ahrefs, How much does it cost to buy backlinks | Updated 2024 |
| SEOs consider $508.95 an acceptable price for one high-quality backlink (412 respondents). | Editorial.Link, Link building statistics survey | 2026 |
| Respondents put the minimum monthly budget to compete in a highly competitive niche at $8,406. | Editorial.Link, Link building statistics survey | 2026 |
| Agencies spend 32.1% of the SEO budget on link building, and in-house teams 36.03%. | Editorial.Link, Link building statistics survey | 2026 |
| 48.6% of SEOs rate digital PR as the most effective link building tactic, ahead of guest posting at 16%. | Editorial.Link, Link building statistics survey | 2026 |
| 80.9% expect link building to get harder and more expensive over the next 2 to 3 years. | Editorial.Link, Link building statistics survey | 2026 |
| 64.9% of SEOs say a website can rank high on Google without backlinks. | Editorial.Link, Link building statistics survey | 2026 |
The Editorial.Link survey covered 518 SEO professionals, mostly agency staff in Europe and the US, recruited through the company's own channels. Editorial.Link sells link building, so treat its cost figures as practitioner opinion.
What Google says about links
Google's documentation confirms links still count, and that it tries to discount links that were bought or traded.
| Statistic | Source | Year |
|---|---|---|
| Google says PageRank, one of its original core ranking systems, "continues to be part of our core ranking systems." | Google Search Central, Ranking systems guide | Current |
| Google says that if other prominent websites link to content, "this is generally a good sign that the information is trustworthy." | Google, How Search works: ranking results | Current |
| Since the December 2022 link spam update, Google's SpamBrain detects sites buying links and sites used to pass outgoing links, and neutralizes those links. | Google Search Central Blog, December 2022 link spam update | 2022 |
Buying, selling or exchanging links to manipulate rankings is listed as link spam in Google's spam policies. The practical result: a bought link may simply count for nothing.
Links and AI search
AI assistants pick sources differently from Google's classic ranking. Early data suggests mentions of a brand matter more there than raw link counts.
| Statistic | Source | Year |
|---|---|---|
| Branded web mentions correlated at 0.664 with brand visibility in Google AI Overviews, across 75,000 brands. | Ahrefs, AI Overview brand correlation study | 2025 |
| Backlinks correlated at only 0.218, and referring domains at 0.295. | Ahrefs, AI Overview brand correlation study | 2025 |
| Domain Rating correlated at 0.326 with AI Overview visibility. | Ahrefs, AI Overview brand correlation study | 2025 |
| 73.2% of SEOs believe backlinks influence the chance of appearing in AI search results. | Editorial.Link, Link building statistics survey | 2026 |
Ahrefs' study used Spearman correlation on brands with Domain Rating above 40. Links still help a brand get mentioned, since a linked article is also a mention. To see how often ChatGPT, Claude and Gemini name your business today, run the free Rank.ai AI grade.
What these numbers mean for site owners
- Earn links from content people cite. Since 94% of content earns no links, the content that does is usually original data, tools or the most complete answer on a topic. Our guide to anchor text best practices covers how those links should read.
- Check what competitors earned. A competitor analysis shows the referring domains behind the pages you need to beat, and keyword difficulty tells you roughly how many you need.
- Protect the links you have. With two thirds of links rotting over a decade, redirect old URLs and reclaim broken links pointing at your site.
- Get your brand named on trusted sites. For AI search, being named on respected sites correlates more strongly with visibility than link counts do. Local businesses get similar benefits from citation building.
- Skip paid link schemes. Google says SpamBrain neutralizes bought links, so the money may buy nothing.
FAQ
Do backlinks still matter for SEO in 2026?
Yes. Google says PageRank is still part of its core ranking systems, and links from prominent sites are a sign of trust. The #1 result averages 3.8x more backlinks than positions 2 to 10 in Backlinko's study.
Is it true top-ranking pages have 3.8 times more backlinks?
Yes, with context. Backlinko's analysis of 11.8 million Google results found the #1 result has an average of 3.8x more backlinks than positions 2 to 10. It is a correlation study, so it cannot prove the links caused the ranking.
How many web pages have no backlinks?
Most of them. Backlinko found about 95% of pages in its ranking study had zero backlinks, and its content study found 94% of 912 million blog posts had no external links.
How much does a backlink cost?
Ahrefs' outreach test found an average price of $361.44 for a paid link placement, and SEOs surveyed by Editorial.Link in 2026 put an acceptable price for one high-quality link at $508.95. Buying links that pass ranking credit breaks Google's spam policies.
Do backlinks help you appear in AI answers?
Somewhat. Ahrefs found backlinks correlated at 0.218 with AI Overview brand visibility, while branded web mentions correlated at 0.664. Links still help because they usually come with a mention, but being named often on trusted sites appears to matter more.
Sources and method
We chose the largest published studies of links and rankings, Google's own documentation, and recent surveys with a stated sample. Vendor studies are named with their sample size and year; older studies remain where they are still the standard citation. Correlations are reported as correlations. Every figure and link was checked on 2026-10-08. Related reading: SEO statistics and Google search statistics.
