Things to consider
What are you looking for?
Who is most likely to collect statistics for that?
- Government (federal? local? city or county? state?)
- non-governmental organizations (usually international)
- private sector
- academic institutions
- scholars
Where are those numbers most likely to be disseminated?
- gov't website
- articles: newspaper, magazine, or scholarly
- books? it usually takes at least a couple of years to publish a book
- "the web"
How do you find them?
- Google can work! e.g. pets and statistics
but be sure you pay attention to where the statistics are coming from re: reliability, accuracy, etc.
- data.gov
gateway to stats from US govt agencies, not just the Census Bureau (Agriculture Dept, NIH, etc.)
- American FactFinder
- paywalls/subscription services
Has someone done an analysis of the numbers? Written and published a report?
For example, Minnesota Demographer