Ranking · Market research and public opinion polling

Market research and public opinion polling: largest employers

214 Belgian companies in the sector (NACE 7320) report employees in recent accounts; here are the top 20. "I.D.E.A. S.C" leads with 333.9 FTE (financial year 2025).

Top 20

Ranked by average headcount (FTE) reported in the latest filed accounts (accounts less than 3 years old).

#Company Total assetsRevenue EquityFTEYear
1 "I.D.E.A. S.C" 7000 Mons €441.3m €28.7m €279.3m 333.9 2025
2 Conseil Europeen de l'Industrie Chimique - European Chemical Industry Council 1040 Etterbeek €52.5m €4.44m €24.4m 157.0 2025
3 IQVIA Solutions Belgium 1930 Zaventem €78.1m €33.1m €17.2m 134.8 2025
4 Strand Associates Consulting 2000 Antwerp €8.85m €21.2m €2.27m 123.6 2025
5 IDAL Belgique 5004 Namur 548,325 € — 26,681 € 104.9 2025
6 Fleishman-Hillard 1040 Brussels €10.1m €21.3m €6.74m 92.9 2024
7 FTI Consulting Belgium 1000 Brussels €32.6m €37.3m €21.7m 80.3 2025
8 The House of Marketing 1831 Machelen (Brab.) €24.0m €14.9m €2.86m 79.4 2025
9 NielsenIQ Belgium 3000 Leuven €138.8m €29.8m €126.9m 78.5 2024
10 Union des Villes et Communes de Wallonie 5000 Namur €9.22m €2.25m €5.18m 76.3 2025
11 Vias institute 1130 Brussels €20.2m €13.0m €13.8m 73.7 2025
12 GFK Belgium 3000 Leuven €30.9m €31.5m €7.74m 73.5 2025
13 Phonecom 1060 Saint-Gilles €2.53m — 572,776 € 64.3 2025
14 Residence Bois de la Pierre 1300 Wavre €4.92m — €1.75m 52.9 2025
15 Verian Group Belgium SA 1000 Brussels €20.7m €30.3m −664,066 € 50.6 2024
16 YouGov CP Belgium 3000 Leuven €28.3m €5.93m €5.05m 46.6 2025
17 Haystack 3001 Leuven €5.36m — €2.27m 44.1 2025
18 Union of the Electricity Industry-Eurelectric - Union de l'Industrie Electrique-Eurelectric 1000 Brussels €6.91m €6.26m €5.23m 42.5 2025
19 Plastics Europe 1040 Brussels €16.4m — €10.7m 39.7 2025
20 Hydrogen Europe 1000 Brussels €13.6m — €2.83m 39.5 2025

Headcount reported by the company for all its sites: the jobs may be located elsewhere.

“—”: not published. Small companies (micro and abridged accounts) do not have to publish their revenue.

← The whole Market research and public opinion polling sector

Frequently asked questions

Who is the largest employer in Market research and public opinion polling?

"I.D.E.A. S.C", with 333.9 full-time equivalents reported (financial year 2025).

How many Market research and public opinion polling companies report employees?

214 out of 1,630, in accounts less than 3 years old.

Idonis

Analyse companies in Market research and public opinion polling

Filter these companies by size, soundness and trend, follow them and get an alert when their accounts or publications change.

Open the full file →
Free account in 30 seconds, by email. No bank card.

Active companies (legal entities) that have filed at least one set of annual accounts, based on the Crossroads Bank for Enterprises and the National Bank of Belgium. The sector is the main activity in the register; the municipality is that of the registered office. Data updated on 14 Nov 2026.