The research was carried out by Portland-based Impressa Economics which analysed data from 30, 000 postal codes.

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The boost is unevenly distributed across postal codes, with values in Stratford, the games' host neighborhood, rising more modestly, at 13%.

WSJ: London Developers Hope for Olympic-Size Boom

Simpler postal codes mimic zip codes for fast machine reading.

FORBES: Scanned Goods