For the United States, check http://www.ssa.gov/oact/babynames/ and http://nametrends.net/ or http://jezebel.com/map-six-decades-of-the-most-popular-names-for-boys-st-1450787771 and http://jezebel.com/map-sixty-years-of-the-most-popular-names-for-girls-s-1443501909</a>
For Britain, http://www.babynames.co.uk/ and http://www.britishbabynames.com/blog/ or even http://publicdomainreview.org/2012/09/18/curiosities-of-puritan-nomenclature-1888/
And since I live in Spain, here’s a look at names there: http://unadocenade.com/una-docena-de-nombres-de-chica-mas-puestos-en-espana/ and http://unadocenade.com/una-docena-de-nombres-de-chico-mas-puestos-en-espana
If you need an idea for a story, here are a few:
• This is a gritty novella about a centuries-old family-run pawn shop specializing in magical objects, and the item that changed their business forever.
• This is a touching tragicomedy about a small town in Florida that must relocate due to rising sea levels from climate change.
• This is a culture clash story in which a superstition has been passed down among Lunar colonists that Earth-born humans bring bad luck to water storage units.
— Sue Burke