Some of the states give off serious "one of these things is not like the others" vibes. For example, Kansas: Ember, Hayden, Oakley... and Lydia? Where'd that come from? And Wyoming: Piper, Oakley, Sawyer... and Emmy. I mean, if those were sibsets, I'd assume three boys and one girl in each case.

Utah stood out to me, Oaklee, Navy, Indie, and Kate.

I expected Evelyn in Oregon's list. Every time I go to the park there seems to be 4 of them. I suppose that was 2-4 years ago, though. 

The LDS community is ground zero for adventurous naming, so it's not surprising that Utah would stand out in its defining names. But the list is another example of "one of these is not like the others." Kate?! Perhaps Salt Lake City is filled with Duchess of Cambridge fans.

More "...one of these things doesn't belong..."

Three girls and one... mountain? well, not a traditional girl name, anyway:
Alaska: Aurora, Lena, Chloe... and Denali
Colorado: Cora, Hazel, Josephine... and Aspen
D.C.: Alice, Zoe, Maya... and Royal
Florida: Valentina, Gabriella, Victoria... and Aaliyah
Maine: Natalie, Lydia, Nora... and Piper
New York: Rachel, Valentina, Maya... and Chaya
Virginia: Abigail, Annabelle, Virginia... and Skylar
Wisconsin: Nora, Hazel, Violet... and Tenley

Three ultra-modern possibly-unis3x names and one staid traditional:
Indiana: Hadley, Willow, Piper... and Eleanor
South Carolina: London, Trinity, McKenzie... and Caroline

Like Indiana & South Carolina, but with more misspellings:
Mississippi: Londyn, Kennedi, Khloe... and Mary

(No, I'm not saying Khloe can be unis3x, just that nobody spelled it with a K 20 years ago.)

These lists have me thinking that my American home states are Oregon and Washington -- it's amazing how much local fashion shapes your taste, given that I'm from British Columbia...

Another "one of these things is not like the others" is Hawaii: Kalea, Mahina, Kailani, and . . . Aria. Three traditional Hawaiian names, and one modern English word-name. The letter R isn't even in the Hawaiian alphabet!

New York didn't strike me as that odd for a cosmpolitan state, and I would have picked Valentina as the outlier; the other three are all Hebrew names.

As a New Yorker, the New York list doesn't surprise me at all. New York has the biggest concentration of Jews in the country, so Chaya and Rachel get disproportionate use (Chaya I would expect is almost exclusively Jewish in usage; Rachel was more broadly popular in the '80s and '90s, but since it's fallen a lot since then, I would expect its continued usage to be also disproportionately Jewish). Maya is still generally popular, but it has a Hebrew derivation in addition to the more commonly-cited Greek, so I suspect that also reflects Jewish usage. Valentina strikes me as very popular among Italian-Americans, of which we also have many, and the Hispanic community (ditto). 

I was interested to see Camila on the California list, as I knew two of them when I lived there. One mom was Puerto Rican, the other Eastern European (I think Russian, but I'm not sure). It's also on the list in Texas, so I'm guessing it's a popular name among Hispanics now.

Massachussetts is showing its Irish roots--Maeve and Fiona stand out.

My own tastes run toward New Hampshire, Rhode Island, Oregon and Washington :)

In New York I suspect that Valentina is also current in the Russian community, such as around Brighton Beach. So appeal in three different communities could account for the statistics Laura was analyzing.

Looking at adjacent New Jersey, I think Esther and Miriam also reflect the burgeoning Jewish population in places like Lakewood.

I'd also place Valentina as the outlier in New York. Not outlier in that it doesn't make sense in the state, just that the other three are pretty clearly Jewish-driven.

Right, Emily?! Although I'm from Quebec, as I read each state's list, the ones that stood out to me as most attractive were all in New England. But I also liked the West Coast names more than anything in the middle of the country.

The NY and NJ lists are expected based on their demographics. CTs Gianna is also not surprising due to its large Italian population. Aurora and Denali go together quite well for Alaska.

The Carolinas and Virginia seem to enjoy naming kids after their home state.

Idaho def. into the adrogynous names for girls.  And Remington?!?!  I don't get naming your little girl after a firearm.

Oregon is by far my favorite  (with the possible exception of Penelope) on this list which maybe makes sense since I live in Northern California.  And like the boys list West Virginia my least favorite.

I'm surprised no one's pointed out the obvious for Royal's seemingly outlying presence in DC's 4 -- DC is 49% black, and Royal is almost exclusively given to black children, e.g. Lil Kim's daughter is Royal and Chris Brown's is a Royalty.