Market Research Companies in Cologne

Key figures for researchers

Population

1,025,523 (31 December 2025), the largest city in North Rhine-Westphalia¹

Districts

9 Stadtbezirke and 86 Stadtteile⁴

Migration background

43.1% of registered residents (end of 2025)²

Non-German citizens

21.6% of registered residents (end of 2025)²

Largest foreign nationalities

Turkish (48,640), Italian (17,691), Ukrainian (16,710) registered residents (end of 2025)²

Age

15.7% under 18, 25.0% aged 60 and over (end of 2025)²

Average age

42.7 years (end of 2025)³

Households

575,992, 1.85 people on average; 51.9% are one-person households (end of 2025)³

Moves

56,321 people moved in and 53,280 moved out in 2025⁵

Jobs

631,907 employees subject to social insurance; 322,224 commute in (30 June 2025)⁶

Economy

GDP of €81.9 billion in 2024⁶

Research guide

Research landscape

Cologne is the largest city in North Rhine-Westphalia, the most populous German Land. Full-service agencies work alongside qualitative specialists, B2B and healthcare firms, field and telephone studios and online panel providers.

With a GDP of €81.9 billion in 2024, the city is also a major location for B2B research. In June 2025, 631,907 employees subject to social insurance worked in Cologne, 553,626 of them in services, led by health and social work (86,982) and trade (75,446). 322,224 people commuted in from outside the city.

Who you will interview

At the end of 2025, 43.1% of registered residents had a migration background and 21.6% were not German citizens. The largest foreign nationalities are Turkish (48,640), Italian (17,691) and Ukrainian (16,710), followed by Bulgarian and Iraqi. For migrant audiences, consider translated questionnaires or bilingual interviewers.

Households are small: 1.85 people on average, and 51.9% are one-person households, so studies of families or couples need quotas on household type. 15.7% of residents are under 18 and 25.0% are 60 or over; the average age was 42.7 years at the end of 2025.

Fieldwork in practice

Cologne has 9 boroughs (Stadtbezirke) and 86 Stadtteile. At the end of 2025, Lindenthal (153,655 registered residents) and Mülheim (150,604) were the most populous boroughs, and Chorweiler (83,991) the smallest. Sampling or quotas by borough help control the spread of interviews.

The population moves a lot (56,321 arrivals and 53,280 departures in 2025), so address lists age quickly and door-to-door studies need more contact attempts. Online panels are the main method for consumer surveys, with telephone or face-to-face interviews for older or offline audiences.

Focus groups and qualitative research

In-person focus groups are usually held in dedicated studios with a one-way mirror and video streaming, most of them in central Cologne. Allow for travel time from outer boroughs such as Chorweiler or Porz when scheduling evening groups.

Ask the agency for its Cologne incentive levels and recruitment lead times; B2B and senior respondents often prefer online interviews. Online communities and video interviews are widely used. Avoid in-person sessions during the street carnival week.

Timing

North Rhine-Westphalia sets its own school holidays. In 2026/27: autumn holidays from 17 to 31 October 2026, Christmas holidays from 23 December 2026 to 6 January 2027, Easter holidays from 22 March to 3 April 2027, a day off on 18 May 2027 and summer holidays from 19 July to 31 August 2027. Families and business targets are harder to reach in these periods.

Carnival peaks from Weiberfastnacht (4 February 2027) to Rosenmontag (8 February 2027), ending on Ash Wednesday (10 February 2027); Rosenmontag is not a statutory public holiday. NRW public holidays include Corpus Christi (27 May 2027) and All Saints’ Day (1 November). Large fairs at Koelnmesse include IDS (16 to 20 March 2027), interzum (11 to 14 May 2027) and Anuga (9 to 13 October 2027). Check national public holidays in the Germany guide.

Working with a Cologne agency

• Share a clear brief: objectives, target, sample size, boroughs or areas, method, languages and deadline.
• For face-to-face or recruitment, ask how the agency reaches recent movers and migrant communities.
• For focus groups, ask for the studio address, viewing room capacity, streaming options and incentive levels.
• Ask whether the agency is a member of ADM or BVM and follows the German research guidelines.
• Compare several proposals: you can send one request to up to 5 Cologne companies from this page.

National rules (data protection, holidays, sampling across regions) are covered in our guide to market research in Germany.