Four locations in Fairfield County are among the nation's Top 50 richest places, according to brand-new rankings from Bloomberg .
- No. 10. Darien, average household income: $352,839
- No. 16. Old Greenwich, $321,377
- No. 22. Riverside, $309,401
- No. 23. Westport, $309,144
Atherton, California, a San Francisco suburb located in San Mateo County, ranked No. 1 for the fourth year in a row with an annual household income of $525,324.
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