This article in the Oregonian last week talks about even though the Portland area has grown, we have recently been leapfrogged by both San Antonio, Texas and Orlando, Florida in population.  The Portland metro area's population now is over 2.4 million, up 1.7% from last year.  You can read the article here, which has information on other area cities and within the arcticle there is a fascinating link to the US Census bureau statistics which rate fastest growing areas all around the USA.  Its interesting reading!