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Washington’s Office of Financial Management recently released its annual population estimates (PDF) for the state, and the entire Tri-Cities area is growing…but the fastest growth is happening in West Richland and Benton City.

Both of those cities have seen population rise 9.5% between the 2020 federal census and this year’s OFM estimate. It makes sense since they have the smallest population bases of the five local cities in OFM’s report. Kennewick, the local city with the highest population, saw the smallest growth rate at 3%. Here’s how it looks for the Tri-Cities, plus West Richland, Prosser, and Benton City:

If you want to compare our growth to a couple of our distant neighbors, Yakima’s population is up 1.7% in this same timeframe and Walla Walla’s is up just 0.7%. You can see the OFM’s full city-by-city breakdown in this PDF.

At the county level, Benton County’s population estimate is up 4.7% from the 2020 census, while Franklin County’s is up 4.5%. The overall estimated population in both counties sits at 316,600.

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Cari McGee

Hi, I'm Cari McGee. 👋 I've lived in the Tri-Cities since 1994 and I've been a licensed Realtor® since 2004. That's a lot of local knowledge and real estate experience that I put into every article you read on my website! We've helped more than 560 families buy or sell property in the Tri-Cities. In 2023, our community voted us the bronze winner for Best Real Estate Team in the Tri-Cities Best voting. Learn more about me by clicking the link right above. And if you have any questions, get in touch anytime!

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