If you named your baby girl Emma or your baby boy Matthew, you weren’t the only one. And if you didn’t, it may have something to do with where you live.

News site OpenFile has launched Baby File, an interactive map of the GTA’s most popular baby names by postal code for 2005 to 2009. Using provincial government data, Baby File’s creator, Patrick Cain, also created maps for Hamilton and Ottawa but said Toronto is a special case on its own.

“You have suburban names, you have urban names and you have wonderful one-off names like Tenzin,” said Mr. Cain.

Overall, Emma, Olivia and Emily top the list for girls and Matthew, Ethan and Daniel are most popular for boys. But the list has some interesting neighbourhood variations.

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– West-end neighbourhoods Parkdale and Liberty Village stood out with Tibetan name Tenzin topping the list for both boys and girls. (Tenzin didn’t make the top five of any other area.)

– Areas of Markham, and only those areas of Markham, favoured Chloe as the top girls’ name.

– Arabic and Punjabi names got the top spots in areas of Brampton and Scarborough, with Muhammad being the top choice for boys. Fatima was favoured for girls in the same areas; Gurleen was a common pick in the L6R and L4T postal code areas.

– Ethan, while not too popular in the downtown core, is a favourite in the city outskirts. It ranks No. 1 in Newcastle, Burlington and all the way up to the south shore of Lake Simcoe, but barely makes a peep in downtown Toronto, with the exception of the area surrounding Church and Wellesley streets.

– William is nearly a downtown exclusive. It was the No. 1 name for boys in neighbourhoods such as Lawrence Park, the Annex and Bloor West Village.

– For girls, Maya peaked in popularity in the downtown core.

– In the M6A postal code, home to much of Toronto’s Orthodox Jewish community, Chana was on top. Chana is a Hebrew variation of Hannah.