Market Sizing Data Sources

Curated list of credible sources for market research and sizing analysis.

Industry Research Reports

Premium Research Firms

Gartner (https://www.gartner.com)

• Technology market forecasts and sizing
• Magic Quadrants for competitive positioning
• Typical cost: $5K-$50K per report
• Best for: Enterprise software, IT services, emerging tech

Forrester (https://www.forrester.com)

• Business technology and digital transformation
• Wave evaluations for vendor comparison
• Typical cost: $3K-$30K per report
• Best for: Marketing tech, customer experience, B2B

IDC (https://www.idc.com)

• IT market intelligence and sizing
• Detailed segment breakdowns
• Typical cost: $4K-$40K per report
• Best for: Hardware, software, IT services

McKinsey (https://www.mckinsey.com/featured-insights)

• Free insights and reports
• Strategic industry analysis
• Best for: Industry trends, macroeconomic context

Accessible Research

Statista (https://www.statista.com)

• Cost: $39/month individual, $199/month business
• Coverage: 80,000+ topics across industries
• Best for: Quick market size estimates, charts, trends

CB Insights (https://www.cbinsights.com)

• Cost: Custom pricing (typically $10K+/year)
• Coverage: Venture capital, startup markets
• Best for: Emerging markets, competitive intelligence

PitchBook (https://pitchbook.com)

• Cost: Institutional pricing
• Coverage: Private company valuations, M&A, VC
• Best for: Startup valuations, funding trends

Grand View Research (https://www.grandviewresearch.com)

• Cost: $2K-$5K per report
• Coverage: B2C and emerging markets
• Best for: Consumer markets, healthcare, cleantech

Government and Public Data

U.S. Government Sources

U.S. Census Bureau (https://www.census.gov)

• Free, authoritative demographic data
• Economic census every 5 years
• Best for: Business counts, demographics, spending

Bureau of Labor Statistics (https://www.bls.gov)

• Free employment and economic data
• Industry-specific statistics
• Best for: Employment trends, wages, productivity

SEC EDGAR (https://www.sec.gov/edgar)

• Free public company filings
• 10-K, 10-Q reports with segment revenue
• Best for: Validating market size with public company data

Data.gov (https://www.data.gov)

• Free government datasets
• Aggregates across agencies
• Best for: Specialized industry data

International Sources

OECD (https://data.oecd.org)

• Free international economic data
• Best for: Cross-country comparisons

World Bank (https://data.worldbank.org)

• Free global development data
• Best for: Emerging markets, macro trends

Eurostat (https://ec.europa.eu/eurostat)

• Free European Union statistics
• Best for: European market sizing

Trade Associations

Industry associations often publish market research:

Software & SaaS

• Software & Information Industry Association (SIIA)
• Cloud Security Alliance (CSA)

E-commerce & Retail

• National Retail Federation (NRF)
• Digital Commerce 360

Financial Services

• American Bankers Association (ABA)
• Financial Technology Association (FTA)

Healthcare

• Healthcare Information and Management Systems Society (HIMSS)
• American Hospital Association (AHA)

Manufacturing

• National Association of Manufacturers (NAM)
• Industrial Internet Consortium (IIC)

Company and Customer Data

B2B Databases

LinkedIn Sales Navigator ($99/month)

• Company and employee counts
• Industry filters
• Best for: B2B customer counting

ZoomInfo (Custom pricing)

• Company databases with firmographics
• Contact data
• Best for: B2B TAM calculations

Crunchbase ($29-$99/month)

• Startup company data
• Funding and employee information
• Best for: Tech startup markets

BuiltWith ($295-$995/month)

• Technology usage data
• Website analytics
• Best for: Technology adoption sizing

Consumer Data

Euromonitor (Custom pricing)

• Consumer market research
• Best for: B2C product markets

Nielsen (Custom pricing)

• Consumer behavior and media
• Best for: CPG, retail, media markets

Mintel (Custom pricing)

• Consumer trends and insights
• Best for: B2C products and services

Search and Discovery Tools

Market Research Aggregators

Research and Markets (https://www.researchandmarkets.com)

• Aggregates reports from 100+ publishers
• $500-$10K per report
• Search across all major research firms

MarketsandMarkets (https://www.marketsandmarkets.com)

• Custom and syndicated research
• $4K-$10K per report
• Good for niche B2B markets

Free Search Tools

Google Scholar (https://scholar.google.com)

• Free academic research
• Best for: Emerging technologies, academic validation

SSRN (https://www.ssrn.com)

• Free working papers
• Best for: Financial services, economics

arXiv (https://arxiv.org)

• Free preprints in CS, physics, etc.
• Best for: AI/ML, scientific markets

Competitive Intelligence

Public Company Analysis

Yahoo Finance (Free)

• Public company financials
• Segment revenue from earnings

Seeking Alpha (Free + Premium)

• Earnings transcripts
• Analyst estimates

Public company investor relations

• Annual reports (10-K)
• Investor presentations

Private Company Intelligence

PrivCo (Custom pricing)

• Private company financials
• M&A transaction data

Owler (Free + Premium)

• Company profiles and news
• Revenue estimates

SimilarWeb (Free + Premium)

• Website traffic analytics
• Best for: Online business sizing

Survey and Primary Research

Survey Tools

SurveyMonkey ($25-$75/month)

• DIY surveys
• Best for: Customer willingness to pay

Typeform ($25-$83/month)

• Conversational surveys
• Best for: User research

Qualtrics (Enterprise pricing)

• Professional research platform
• Best for: Large-scale studies

Panel Providers

Respondent.io ($100-$200 per response)

• Recruit professionals for interviews
• Best for: B2B customer research

UserTesting ($49 per participant)

• User research and testing
• Best for: Product validation

Google Surveys ($0.10-$3.50 per response)

• Quick consumer surveys
• Best for: Basic consumer insights

Data Quality Checklist

When evaluating sources:

Authority

• Who published the research?
• What's their reputation?
• Do they have industry expertise?

Methodology

• How was data collected?
• What's the sample size?
• When was research conducted?

Recency

• Is data current (< 2 years old)?
• Has market changed significantly?
• Are growth rates still applicable?

Consistency

• Do multiple sources agree?
• Are definitions consistent?
• Do numbers triangulate?

Relevance

• Does it match your market definition?
• Is geography appropriate?
• Are segments aligned?

Free vs. Paid Strategy

Start with free sources:

1. Government data for customer counts
2. Public company filings for segment revenue
3. Trade associations for industry trends
4. Google Scholar for academic research

Upgrade to paid when:

• Raising institutional funding (investors expect premium sources)
• Need detailed segment breakdowns
• Market is niche or emerging
• Free sources are outdated or insufficient

Cost-effective approach:

• Buy 1-2 key reports that cover your core market
• Use free sources for triangulation
• Supplement with primary research (customer interviews)
• Cite mix of free and paid sources

Citation Best Practices

Always cite sources in market sizing:

Format:

Market Size: $X.XB
Source: [Publisher], [Report Name], [Date]
URL: [link if available]

Example:

Email Marketing Software TAM: $7.5B (2024)
Source: Gartner, "Market Share: Email Marketing Software, Worldwide, 2024"
Note: Includes all email marketing software revenue globally

Include:

• Publisher and report name
• Publication date
• Geography and scope
• Any adjustments made
• Link to source (if public)

Keeping Research Current

Set Google Alerts

• Industry keywords
• Company names
• Market terms

Follow Research Firms

• Twitter accounts
• LinkedIn updates
• Free newsletter summaries

Track Public Companies

• Earnings calendars
• Investor relations pages
• Annual reports

Join Industry Groups

• LinkedIn groups
• Slack communities
• Trade associations

Review Annually

• Update market size with new data
• Adjust growth assumptions
• Revisit methodology if market changed

Emergency Research Guide

Need market size in < 2 hours?

1. Check Statista (15 min) - Quick industry overview
2. Find public companies (30 min) - Get segment revenue from 10-Ks
3. LinkedIn search (20 min) - Count potential B2B customers
4. Google Scholar (20 min) - Find academic papers
5. Calculate bottom-up (30 min) - Customers × Price
6. Triangulate (15 min) - Compare sources

Document everything:

• Write down all sources
• Note all assumptions
• Show your methodology
• Caveat data quality

Better to have a defensible estimate with clear limitations than no data at all.