Getting ready to relocate and looking to get the communities input on what US city (gotta stay stateside for a least another 2 years) is closest to the highest concentration of climbing.

Fayetteville, WV

Home of the New River Gorge. Not much there if you're looking to work but it's a stones throw away from some of the best climbing in the country. Not to mention some great white water rapids, biking, etc. It's definitely not a city, though. Much too small if you want the comforts of the city.

boulder, co (someone is bound to say this eventually...)
walk to flagstaff bouldering
ride bike to boulder canyon, eldorado canyon, flagstaff bouldering.
flatirons - lots of them - walk or bike.

awesome bus system here too. if you don't have/want a car...

just look at boulder here on mountainproject.
how many routes are listed?? (answer = a lifetime)

ps: lots of work around here also.

I'm pretty sure that Boulder, CO has the highest concentration of climbing close to town of any place in the U.S. Say what you will about Boulder but it is a great place to be a climber.

Colorado Springs is cool!

key west, FL

not to be an a-hole but any city would work just depends upon how far you are willing to walk?

snarky useless comments aside I would concur with Cor's comments that Boulder is a pretty good "city" with lots of good climbing within walking distance (but that really depends where you are in town).
Austin Tx is a fantastic city with pretty good climbing within walking distance.
Seattle is a cool city, but nothing climbing wise is close enough to walk except artificial bouldering.
Squamish BC is technically not stateside but a very cool community, easy to get around, fantastic climbing all around and LOTS of other cool things to do like Mtn bike-ski-surf-kite-surf-paddle-etc.

all I can directly comment on.....

Rocky Butte state park is right smack in the middle of Portland... over 150 routes on 15 or so walls from 5.1 to 5.14, many very high quality, most traddable, always in the shade, and hardly anybody climbs there!

watch out for the passed out bums, used condoms and syringes, broken beer bottles, and feral hookers.

Tucson. With the money you save on cost of living, compared to Boulder, you can buy yourself a Tesla electric car.

New Paltz, the Gunks, easy hitchin' to the cliffs. Since my car stopped running a month ago, I've climbed just as much and haven't missed it.

Legitimate post, or another troll setting up people to spray about boulder? You decide.

Anywhere's within walking distance, if you have the time.

+1 for Boulder.

Sam is not welcome here though.

Prod.

Check out Ogden, Utah. Walking distance to many dozens of boulders, and many dozens of routes, not to mention tons of other outdoor activities. Comparatively low cost of living to some of the other suggestions too.

Depends on your definition of a city. N. Conway NH is a couple of miles from 500 routes, but it;s much more a town than city.

vegas baby! i climb in a national park after work and zion, yosemite, j tree, p forks, and many more are all a 3-5 hour drive away... strange people here but i understand boulder's full of entitled white people, at least we have diversity! and you'll be able to find a girlfriend that isn't ugly, fat, and mean... LOL

good luck!

North Conway is a bit like Boulder, more of a state of mind than either a town or city :)

St George, UT. Lots of areas within walking distance from your nearest Starbucks. And then all of Snow Canyon. The Chuckawalla Wall is a really good workout after work, during lunch, or before work. Just from the parking lot to the crag is less than 100-ft....maybe 150-ft.

Fairly easy bike-ride to short but sweet trad and sport routes outside of Boise. Plus with daylight until 10pm in the summer, you can get a very full climbing session in after a full day of work!