The growing Mid-Cities region between Dallas and Fort Worth surged to the left in 2020, helping to flip Tarrant County.
The Northern suburbs are growing quickly with white collar professionals, such as in Southlake (median household income of $240,000).
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Note:
Median income is in 2019 dollars.
The cities vary greatly in their demographics.
Sources: OpenStreetMap, Tarrant County Election Archive, Census Quick facts