Niche Markets Are Everywhere!
Niche markets exist everywhere. If there is a need or a desire for a product there is niche and several sub niches to go along.
The important thing is to do the right research and be certain that there is a demand for the products within any given niche. There does not have to be a lot of demand. 500-1000 searches is adequate.
It is possible when looking at searches to stack the number of searches to equal 1000 minimum searches a month. The thing to remember is that if there is an interest there is a niche that has potential to earn good income if one approaches the marketing aspect correctly.