Well said Dr StrangeHat. Here is a list of other cities that are close to Portland size or smaller that have buildings taller than 200 foot and have survived the mass exodus of residents fleeing due to an altered skyline!
Wilmington, DE 71,000 1201 North Market 330 ft 23 floors
Meridian, MS 41,000 Threefoot Bldg 211 15
Trenton, NJ 85,000 Labor Bldg 203 13
Binghamton, NY 48,000 State Office Bldg 228 18
Utica, NY 66,000 State Office Bldg 227 17
Harrisburg, PA 50,000 333 Market St 341 22
Reading, PA 88,000 Berks County Bldg 275 22
Lancaster, PA 59,000 Lancaster Marriott 226 19
Lake Charles, LA 72,000 Capital One Bank 300 22
Bartlesville, OK 36,000 Phillips Petroleum Bldg 292 19
Wausau, WI 40,000 First Wausau Tower 242 11
Greenville, SC 58,000 Landmark Bldg 305 22
Spartanburg, SC 37,000 203 East Main St 250 18
Charleston, WV 51,000 Kanawha Valley Bank 238 20
Galveston, TX 57,000 One Moody Plaza 358 23
Asheville, NC 83,000 Buncombe County CH 230 16
There are a few other cities that meet the above parameters but their tallest structure is a residential/low income/elderly property like Franklin Towers and I left them off. Also did not include numerous beach resort towns like Myrtle Beach and Biloxi because of their non commercial/office skylines.