Top 10 millionaire counties

TNS Financial Services, a market research and polling firm, ranks the nation's top 10 counties with the highest number of millionaire households, which have a net worth of at least $1 million, not including the value of a resident's home.

Cook County, Illinois
Chicago
No. 2
Cook County, Illinois
Number of millionaire households: 171,118
Percentage of state's millionaire households: 40%
Percentage of nation's millionaire households: 2%

L.A.

Cook

Orange

Maricopa

San Diego

Harris

Nassau

Santa Clara

Palm Beach

King
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Most stock quote data provided by BATS. Market indices are shown in real time, except for the DJIA, which is delayed by two minutes. All times are ET. Disclaimer. Morningstar: © 2018 Morningstar, Inc. All Rights Reserved. Factset: FactSet Research Systems Inc. 2018. All rights reserved. Chicago Mercantile Association: Certain market data is the property of Chicago Mercantile Exchange Inc. and its licensors. All rights reserved. Dow Jones: The Dow Jones branded indices are proprietary to and are calculated, distributed and marketed by DJI Opco, a subsidiary of S&P Dow Jones Indices LLC and have been licensed for use to S&P Opco, LLC and CNN. Standard & Poor's and S&P are registered trademarks of Standard & Poor's Financial Services LLC and Dow Jones is a registered trademark of Dow Jones Trademark Holdings LLC. All content of the Dow Jones branded indices © S&P Dow Jones Indices LLC 2018 and/or its affiliates.