That's all outdated info. But since Matt seems to like doxing so much, I'm sure he'll be fine with me updating it.
Matt now lives in the Metro 112 apartments in Bellevue, Washington. Compare this pic of his cat that he tweeted to a picture of one of the units in those apartments from Yelp. The hanging lights, cabinetry, microwave, stove, granite countertops, and everything else matches.
There's also this tweet where he's standing on the east side of the apartment complex, facing south, while playing Pokemon Go. Compare that to the Google map of the area.
Why did Matt have to suddenly leave in that last tweet? It's probably because had 45 minutes to get to his mahjong club. They play at Microsoft Building 50 every Monday at 7 PM.
Matt also no longer works for the USGS. He now works as part of the Microsoft Bing maps team in the City Center Plaza building, as shown in this tweet.