Study: What Data Can You Extract From Google Maps in 2026?
We often get asked: "What percentage of emails will you find?", "Are phone numbers reliable?", "Does it work in my city?". To answer with real numbers, we ran a massive extraction with ContactEra.
Methodology
We analyzed 9,405 businesses across 10 industries and 10 French cities of varying sizes (from Paris to Colmar). Each query was run at depth 1 (first page of Google Maps results). Email enrichment was performed on the 7,637 businesses that had a website.
Total time: 1h30 for targeting (9,405 results) + 54 min for email enrichment (7,637 sites). About 2h30 from start to final export.
Overall Results
| Donnée | Taux de remplissage |
|---|---|
| Name and category | 100% |
| Address | 96% |
| Phone | 96% |
| Rating and reviews | 96% |
| Website | 81% |
| 82% | |
| Technologies | 69% |
| Site description | 60% |
| 45% | |
| 37% | |
| 27% |
Email Rate by Industry
Email rates vary significantly by industry. Professional services and agencies display their email much more often than local shops.
| Secteur | Phone | Website | |
|---|---|---|---|
| Lawyers | 93% | 99% | 88% |
| Accounting firms | 92% | 98% | 85% |
| Web agencies | 90% | 91% | 94% |
| Real estate agencies | 88% | 99% | 95% |
| Plumbers | 85% | 99% | 80% |
| Restaurants | 78% | 98% | 89% |
| Auto repair shops | 77% | 97% | 75% |
| Hair salons | 74% | 98% | 74% |
| Bakeries | 71% | 90% | 65% |
| Dentists | 57% | 97% | 67% |
Takeaway: the more "digitalized" a business is (agencies, firms), the more likely they display their email. Local trades (bakeries, salons, dentists) have fewer websites and thus fewer recoverable emails — but their phone number is almost always available (90-99%).
Email Rate by City
City size has an impact, but it remains moderate. Paris leads, with smaller cities close behind.
| City | Businesses | |
|---|---|---|
| Paris | 902 | 86% |
| Lyon | 797 | 86% |
| La Rochelle | 723 | 83% |
| Annecy | 781 | 82% |
| Valence | 657 | 82% |
| Bordeaux | 804 | 81% |
| Nantes | 809 | 81% |
| Montpellier | 784 | 79% |
| Strasbourg | 752 | 78% |
| Colmar | 628 | 76% |
A/B/C/D Scoring: Prospect Quality
ContactEra assigns a score from 0 to 100 to each prospect based on 7 criteria (verified email, Google rating, reviews, website, social media, phone, marketing stack). Here's the grade distribution:
| Industry | Grade A | Grade B | Grade C | Grade D |
|---|---|---|---|---|
| Real estate agencies | 61% | 24% | 14% | 1% |
| Restaurants | 54% | 21% | 24% | 0% |
| Web agencies | 49% | 33% | 16% | 2% |
| Lawyers | 47% | 40% | 12% | 1% |
| Bakeries | 46% | 21% | 31% | 2% |
| Plumbers | 46% | 33% | 20% | 1% |
| Garages | 41% | 30% | 28% | 1% |
| Hair salons | 36% | 35% | 28% | 0% |
| Accounting firms | 32% | 45% | 20% | 3% |
| Dentists | 21% | 28% | 46% | 5% |
On average, 43% of prospects are rated A (score 75+). These are the most complete prospects: verified email, high Google rating, professional website with social media. Ideal for prioritizing outreach campaigns.
Most Detected Technologies
ContactEra automatically detects the tech stack of each website. Across 7,637 sites analyzed:
| Technology | Presence |
|---|---|
| WordPress | 36% |
| Google Tag Manager | 25% |
| Google Analytics | 21% |
| Cloudflare | 17% |
| WooCommerce | 14% |
| Matomo | 5% |
| Wix | 3.4% |
| Facebook Pixel | 3.2% |
| PrestaShop | 2.1% |
| Doctolib | 1.9% |
WordPress dominates with over a third of all sites. For a web agency looking to sell migrations or redesigns, this data enables precise targeting of businesses on WooCommerce, Wix, or PrestaShop.
Key Takeaways
Across 9,405 French businesses analyzed in Guide:
- 82% have a recoverable email from their website
- 96% have a phone number on Google Maps
- 69% have at least one detectable technology
- 45% have a Facebook, 37% an Instagram
- 43% are rated Grade A (priority prospects)
- Industry has more impact than city on email rate
- Enriching 7,637 sites took 54 minutes (142 sites/min)
These numbers are measured on real data, extracted in real-time by ContactEra. No pre-built database — everything is scraped at the time of search.
FAQ
What is the average email rate on Google Maps?
Our study on 9,405 businesses shows an 82% average. It ranges from 57% (dentists) to 93% (lawyers).
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